Disclaimers: Images use and race risks

3.8k swim, 183km bike (4300hm) and 42.2km run (1300hm). Half option also.

Started 2016. Jump off a boat by a castle, swim point to point. Then bike over 5 Cols (mountain passes). Then run to the 25km 'La Tournant' (turn point) by 5.30pm to ring the bell, or no high route finish atop Mont Semnoz.

Supporter not required.

Photo by Clément Hudry 

3.8k swim (2 loops, Australian Exit), 197km bike (5500hm) and 42 km run (820hm). Half & Olympic options also.

Started in 2009, and set in the beautiful French Pyrenees. Now a weekend festival of distances, i.e. XXL (full), half, olympic and sprint. It has the joint 2nd toughest Extreme bike leg (by ascents) in the World with 8 mountain passes, including the Port de Pailhères, 12km @ 9%.

Supporter not required.

Photo from public race page

Billed as 'The Worlds hardest half' (4300hm) and 'The Worlds most scenic triathlon'. With solid justification.

Started 2010, our 3rd oldest race. This Extreme Half is notorious for having 3200m ascents on the 98km bike and 1100m ascents on the 21km run. Which is more ascents than many full distance events. Plus it takes place in West Norways Fjords, a Unesco World Heritage landscape. Stunning.

Supporter not required.

Photo by MANDAG IK 

 A Half with loads of Aussie character in the beautiful Snowy Mountains.

Swim 3km in picturesque Lake Jindabyne at 930m altitude. Bike 113km with 3200hm through places like Dead Horse Gap, ‘The Gate’ into Murray River Valley, Bullocks Flat and Charlotte Pass. Then run 11km to Australia’s highest peak, Mt Kosciuszko (2228m altitude) and 11km back to the finish line at Charlotte Pass Village.

Supporter required.

Photo from race page

3.8km swim, 186km bike (3923hm) and 44km run (1863hm). Team option also.

Started in 2015. Part of the Extreme Triathlon Series (XTS). It's a great point to point race. Starting near Graz and heads across four mountain passes to the North of Styria. Then finishes at the foot of the Dachstein. And athletes regularly have to cycle past and run over summer snow fields.

Supporter required.

Photo by sportshot.de

3.8km swim, 180km bike (4377hm) and 42km run (2100hm). Half  also. Plus, 'Project 8848' on selected years. Yep, 8848hm.

Started in 2017 by the Laidlow Family, including Sam, the 2023 Kona Champion. Named after Jean de l'Ours, the half-man half-beast of Pyrenean folklore. Hence Bear Chair, and finishers Bear beers. There's also a finishers bell, finishers medals, an Iron Ring for the Course record, and Le Trophe de la Vaillance for the most inspiring athlete story.

Supporter not required.

Now bi-annual so the Laidlows can go to Kona. Next race 2025.

Photo provided by race

          3.8km swim, 187km bike (3200hm), and 42km (1700hm) run. SOLO (half) option also. 200 X-points.    

Started in 2019. Prepare for a 'Montenegro swim exit'. Swim across Black Lake, run to Small Lake and swim it, then run back to swim across Black Lake again! Mostly in darkness. Then the scenic bike down through the deepest canyon in Europe. But what goes down must go up, over 3200m up in all. Then the stunning offroad mountain and forest marathon with 1700m of ascents. Then your plaque awaits on the Wall of Immortals.

Supporter required for Full.

Photo by Kai-Otto Melau

Started in 2012. Water usually 16-18c, and Bike ascents of 3000m and run ascents of 1350m. Also available in Half, Full, Double, Triple and Quin*. Solo or teams.

This is 'The World's Toughest Triathlon' (as voted for by 220 Triathlon in 2017) but it is renowned for it's low-key and friendly vibe. Starts in beautiful Lake Padarn. The bike course goes through stunning scenery and over challenging hills. And finally, the run takes you on a undulating trail round the lake and up and down Wales' highest mountain, Snowdon.

Supporter not required.

Photo by Kathi Harman

It's a 3.8km swim, 180km bike (2500hm), and 42km run (1500hm). SOLO (half) option also.

Famous for it's final bike hill into T2, and it's observatory summit run finish. 

Started in 2017. Caroline Livesey, 2019 Female Winner says it all ... “Raw, extraordinary, exhilarating. The race was brutal, it was beautiful, relentless and as physically tough as anything I've ever done. It is difficult to describe the unique beauty of the landscapes, the roads that stretch endlessly and the immense lakes surrounded by steep and wooded hills. You have to live it to believe it."

Supporter not required for full.

Photo provided by race

A cold 3.4km jellyfish infested Loch swim, 202km (2187hm) bike, and 42km (1582hm)  run over 2 Munros (Scottish Mountains).

Started in 2012. Set in Torridon in the incredible North West Highlands of Scotland. Notorious also for midges, sheep, highland cattle, high winds, unpredictable weather, and Nannies Cafe. Motor Homes will be pushed into the Loch.

SOLO (Half) option. Swim Shieldaig, bike the famous Bealach Na Ba, run the white course backwards. Braw.

Supporter required for full.

Photo by Kai-Otto Melau

A 3.8km swim, 180km 3200m ascents bike, and 44km 2478m ascents run. Half & Olympic options also.

'The Devil' in the Beskid Mountains. Long established (2016) and popular race, the foundation of the Poland Extremes Series. Centred around the town of Żywiec (yes, the beer), and finishes at the summit of Babia Góra.

Supporter not required.

Photo by Ignacy Grubka

A 3km swim, 130km 2400m ascents point to point bike, and 30km 2050m ascents summit run.

The race takes athletes from the Mediterranean Sea to the peak of Canigo, the sacred mountain of the Catalans, central to the legend of a King of Aragon and the dragon. It's also a beautiful protected nature area. Being in early June, it's an excellent start of season race for anyone, and being two months before Bearman it easily allows local athletes to do both.

 Support not essential, although return from T2 needs arranged.

Photographer unlisted.

3.8k swim, 177km bike (4344hm) and 40km run (1962hm). Half & Olympic options also.

 Started in 2021. This location is famous for it's Golden Eagles (hence the name). Swim in the clear waters of Lake Campotosto at 1200m altitude. Bike past castles and through the Gran Sasso & Monti della Laga National Park where many films were set, and run to Campo Imperatore, one of the most beautiful stages of the Giro d’Italia.

Supporter required for full only.

Photo provided by race

3.8k swim, 180km gravel/mountain bike (2000hm) and 42 km run (600hm).

Started 2021. Despite Estonia being a flat country, RD Erko Kurvits has carved out a great full distance adventure with 2600m of ascents through fantastic forest trails, hence only gravel or mountain bikes are practical (and fun).

Supporter requirement tbc.

Photo provided by race 

A 4km swim (at 1400m altitude), 190km bike (4800hm) and 41km run (1600hm). Half and Olympic options also.

 First run in 2017, but forest fires and then Covid delayed it's restart until 2022. 

 It's a beautiful but tough set of races. Swim, bike and run in the stunning Estrela National Nature Park. The race provides aid stations to protect the area.

Supporter not required.

Photo by Paulo Nunes

3.8km swim, 180km bike (3650hm) and 42km run (1250hm). SOLO (Half) option also.

Started in 2017.  Dreamt up by four friends on a bike ride. A fantastic point-to-point adventure. The swim starts in Santa Catarina and the bike winds it's way up through Southern Brazil, up the notorious Serra do Rio do Rastro hairpin road and the run finishes at the top of Morro da Igreja. Going from 5c to 35c during the day is not unusual.

Supporter required for full only.

Photo by dux.pix

3.8km 18c Swim, 180km bike (4696hm) and 43.4km (2144hm) run. SOLO (Half) option also.

Started 2019.  It's classic Xtri distances with a river swim, 4696m of bike ascents, and 2144m of run ascents. The bike includes the Taiwan KOM Challenge section, and the run starts under the sacred Giant Bilu Tree and finishes at the top of Mt HeHuan. Temperature changes from start to finish are significant.

Supporter required.

Photo by Waypoint

3.8km swim, 176km bike (2400hm) and 40km run (1500hm).  

Started in 2021. Swim from the jetty near where Prince Phillip was born, around the coast to the Old Town Fortress, such a unique T1, then bike and run point to point, criss-crossing the island to the famous Angelokastro ('Angel Castle') finish.

Supporter required.

Photo by Kai-Otto Melau

 Started in 2021. A fairy tale race in Germany, the Grimm Xtri takes you on a literary and historical journey, passing castles, towers and crossing the iron curtain.

Full distance, including 200km on the bike. 4000m of ascent (2500m bike & 1500m run) separates Edersee from the finish via the Brocken mountain top.

Supporter required.

 First held in 2019. It's a tough 3.8km swim, 205km bike (4100m ascents), and 42.5km run (2200m ascents), mostly trail.

Also runs a Half and Olympic distances.

Supporter not required.

Photo provided by race

 Founded 2015. Arguably our toughest race. One of our few 'Ultra Extremes', it's an incredible 300km race with 8000m ascents, partly into Slovakia. Course record 21hrs 28mins, cut off 32hrs.

Every section mythical. The 5km swim starts at 4pm jumping from a boat. Then bike 240km (3000m ascents) through the night over the Tatra mountains. Then the monster 55km mountain run (5000m ascents).

Supporter required, but race may be able to arrange.

Photo by Pietruszka Fotografia 

A truly extreme half. 2km swim, 90k (3400hm) bike and 21km (750hm) run. Olympic distance also.

Started in 2018. It's big sister is Triverest!

 The bike has three substantial climbs gaining stunning views over mountains to the beautiful Melchsee-Frutt mountain valley. Then head out to the trails including the beautiful lakes, showcasing a view of Titlis massive with a finish in MELCHEE-FRUTT.

Supporter not required.

Photo provided by race

 The XTRI on the roof of the world.

Started in 2022. 3.8km swim at 800m altitude, 20c. 162km bike, 3800m ascents. T2 is at 1740m altitude. 43km run, 2700m ascents.  Highest point is 4,000m, before a descent to the finish and overnight at a remote homestay village at 1400m. Cut-offs determine 3000m, 3500m or 4000m altitude badges. Black T for the latter two.

SOLO POINT FIVE (extreme half) also available.

Supporter required for full, but race can arrange at a cost.

Photo by 4am Production

Started in 2016. A 3.8km swim at 1800m altitude. Then bike the world famous Stelvio. 48 hairpin bends. 1817m of ascent over 24km. Averaging 8% gradient. You can see why it's also mythical in the cycling world. Just part of the 5000m of ascents and 195km in and out of Switzerland.

Then the marathon with most of the 1100m marathon ascents in the last 10km, finishing at 3000m elevation. Then you're an ICON! 

Supporter required. 

Photographer tbc

 Unique amongst the unique. Two bikes.

Started 1998. Yes, before Norseman.  

Inferno is an incredible point to point triathlon adventure across stunning Swiss scenery, but with road PLUS mountain bike sections.

Between half and full distance. It has a 3.1km swim, a 97km road bike section (2145m ascents), a 30km mountain bike section (1180m ascents) and a 25km run section (2175m ascents). MTBs can be rented locally.

Supporter not required.

 Started in 2016, from the Oravaman race family, one of our oldest races.

A midnight race start for the 3.8km swim. Then 182k bike (2600m ascents) and 42km run (3200m ascents) through the beautiful mountains of Malá Fatra and surroundings of Terchová, the village where Slovak national hero Juraj Jánošík was born, finishing at his famous & iconic statue. 

Supporter required.

Photo by Jozef Juric

TRAVEL WARNINGS CURRENTLY APPLY

1.5km swim (7-8c), 180km bike (900hm) and 39km run (1600hm). The whole race is above 2000m altitude, and just look at that scenery.

A 1.5km swim but at 2250m altitude and 7-8c it will feel like forever. The 180km bike with 900m ascents is on the Worlds Highest Highway, reaching an altitude of 3000m. And the 39km run has 1600m of ascents reaching an altitude of 2990m.

Support required, but race can arrange.

Photo provided by race

TRAVEL WARNINGS CURRENTLY APPLY

3.8km swim (11-12c), 180km bike (2158hm) and 42.2km run (1725hm). Half option also.  

Inspired by racing Norseman, Oleksandr  designed his race around it, and his mountain looks incredibly like Gaustatoppen. Set in the safer west of Ukraine in the beautiful and wild Carpathian Mountains. Swim 3.8 km in Tereblia-Ritske reservoir (11-12⁰C). Bike 180 km on brand-new hilly roads with 2200m of ascents. Then run 42.2 km with 1800 m of elevation. The Hoverla mountain top finish line is the highest spot in Ukraine at 2061 m.

Supporter required for full only.

Half:  2km swim (11-15c), 103km Bike (1700hm), 27km run (1350hm).

3.6km swim, 196k bike (3400hm), 46km run (1800hm). Double & Tag Team options.

Started in 2018, with a new course in 2024. Based in the SW of the Northern Island of New Zealand.  Swim the stunning Lake Rotomanu, typically around 15c. Bike around the mighty Taranaki Maunga, climbing the 4 peaks on your way. Then run from sea level up to the foot of the Maunga to earn the right to be called a Kiwiman.

Supporter required.

Photo provided by race

Started in 2018. Knysna is unique. One of our few southern hemisphere races, which extends your season options. Plus it's a little Ultra. It's a 5km (tidal) swim and 50km run, so that bit extra to play with your head.

A point-to-point adventure along the South African 'Garden Route' has a massive variety of landscapes, i.e. coastal, mountain, semi-arid, plantation and forest, with a respectable 3800m of ascents overall. 

Part of the Extreme Triathlon Series. They also have 0.5 and relay options.

Supporter required for full only, but race can help arrange.

Photo provided by race

 1.8km swim, 102km bike (2183hm), and 21km run (1062hm). 

End of season race with unbelievable climbs, picturesque descents and endless Beskdy trails await daredevils who still can't get enough of mountains and triathlon in autumn. 

Swimming in the beautiful Muchar lake and returning to the Kocierz hotel along the most difficult Beskid uphills are moments you will remember during the long winter evenings.

Supporter not required.

Photo by @tojaignacy

3.8k swim, 188k bike (4450hm), and 44km run (980hm).

This is true back to basics triathlon. Extreme style! Started in 2017, Tomas (the RD) faced local authority event rules across 3 districts  so decided to organise a 'training session' instead. Limit of 30 athletes, everything free, true back to basics triathlon. It's been fully allocated ever since, and usually sells out VERY quickly. Very friendly race.

Supporter required.

Photo provided by race

It's a 1.9km swim in Lake Immeljärvi, then a tasty 130km bike (900hm) through rolling hills and villages, then a 21 km offroad run (950m) in trails around Levi. 

Juuso and the team have been running this Extreme Half since 2015. It's a small family friendly area and race in the middle of beautiful Lapland in Northern Finland.

They also have Sprint, Standard and Mini (kids) distance versions.

Supporter not required.

Photo by Timo Koivisto

A new and truly unique full distance race in a 'mysterious' region of Poland, full of legends. 

Swim 3.8km in the picturesque Bystrzyckie Lake under Grodno Castle, in cold water (14c in May). Bike 176km (3053hm) through the Owl Mountains, passing the largest mountain fortress in Europe and the largest military project of the Third Reich. Then run 42km (1553hm) on mostly trail, technical in places, through the beautiful Stone Mountains.

Truly unique? You run 1.8km through the longest railway tunnel in Poland, so a headlamp will come in handy.

Supporter required.

The most northerly Extreme on Earth. Stunningly beautiful. A 4km swim in the harbour, 181km 2200hm bike around the islands, and 42km 1700hm run over 2 mountains. Very eco focussed too. Support is supplied by the race to minimise pollution. So easier for you logistically. Half, Olympic and Kids events also.

Lofoten Extreme is also part of 'The Arctic Triple' of endurance events in a year. Yep, a 3 discipline event within a 3 event odyssey.

Supporter not allowed.

Photo by Vollker Strobel

    Full & half distances, and Ultra (Full+) every 4 years (2027). You also have the choice of road or gravel bike routes. 

A great point to point adventure from the Mediterranean through beautiful Mercantour and Ubaye National Parks to Embrun. Full distance is a 3.8km swim. Then a 160km 4600hm road bike OR 140km 4000hm gravel bike route. Then a 42km 2000hm trail run.

The 'Ultra' has a bike choice of a 210km 5500hm road bike or monster 238km 6000hm gravel bike routes.

Supporter not required.

Photo provided by race

'The ultimate triathlon on the planet'. Hårek's Vision that started it all. A massive point-to-point adventure across Norway.

Jump from the ferry into the cold fjord, swim 3.8km to Eidford. Then bike 180km (3502hm) across stunning landscapes to Austbygdi. Then the 42km marathon to Zombie Hill and Gaustatoppen for the first 160 athletes to get the famous black t-shirt (1800hm), or the lower route (1100hm) and get the highly respectable white t-shirt. You also race with XTRI World Championship finalists from around the World.

Supporter required.

Photo by Kai-Otto Melua 

Started in 2022 by Olympian Steve Cram and his family, set around beautiful Kielder Water.

Full distance is 3.8km swim (2 laps), 180km bike into Scotland and back with 2424m of ascents, then 42km marathon run around the Kielder Water trails with 634m of ascents in total. Half distance also available.

Supporter not required.

  Photo provided by race 

Home to the World famous IronKouKou club, and The Mighty Yammas himself, Billy Vosnakis.

Beat this 7050m ascents monster and become Greek Goddesses and Gods. Jump from a boat 4km out, and swim to shore under the gaze of Posiedon. Bike 191km and 4800hm up Mt Olympus, and run 40km and 2250hm to the Throne of Zeus!

Half distance also, 3700m of ascents.

Supporter require for full, but can be arranged at a cost. 

Photo provided by race

A 3.8km swim, 178km 4920hm bike, 40.7km 1060hm run. Half distance also.

Point-to-point from Paphos coast through the beautiful Diarizos valley, the vineyards region, and thick coniferous forests to the top of the island, the Olympus peak.

At the beginning of November the climate of Cyprus offers excellent conditions. A perfect 22-25°C on the coast to an expected 13-14°C on Olympus peak. A great season closer.

Supporter not required.

Photo provided by race

An XTRI SOLO POINT FIVE.

A 2km swim, a 91km 1750m ascents bike, and a 21km 1250m ascents run. 

  An extreme half with big ascents and big heritage. Part of our foundations of Extreme Triathlon. Formed in 2011, our 3rd oldest race. Peter Pal'a and his crew also created Goralman and then Janosik XTRI. The Oravaman Tour trio.

Based in the beautiful West Tatras Mountains of Slovakia.

Supporter not required.

Photographer tbc

  An awesome race. Jump from the Ferry into the cold Fjord waters, then cross the entire country through stunning landscapes to ring the bell in Puerto Ibanez. Full distance with 2439m bike ascents and 743m run ascents. Formerly XTRI, but now independent.

The athletes say it best ...

"I could see the mountains and the sun rising. I did not want to finish the swim because it was so beautiful."

"The scenery was unbelievable. I have never seeing anything like that run, anywhere in the world."

Supporter required.

Photo by @wags.photo

  This race is tough, but the beautiful Pyrenees takes your mind off it.

A cool 3.8km reservoir swim. Then 177km over 7 mountain passes on the bike with 4400m of ascents. Then 40km of run with 2100m, most of it on one 18km hike.

Also hosts one of our longest toughest Halfs globally. A 2.3km swim, 118km 2900hm bike and 27km 1100hm run.

Part of Extreme Triathlon Series family, and one of the 5 segments for the XTS trophy.

Supporter required for both full and half.

Photo provided by race

A stunning Extreme Half, immersed in Norway's landscapes.

A 2km fjord swim, surrounded my stunning mountains. A rolling 90km 1600hm bike course along coasts & fjords, with one big hill. Then a very tough 22km 1890hm all trail run in stunning surroundings to finish at one of Norway's most iconic views.

Very successful first event in 2023.

Supporter not required.

Photo provided by race

A truly unique extreme triathlon experience in the Sahara. Full & half distances.

Swim in an oasis, 10-12c. Rolling bike between sand dunes and camels on high quality roads.. Run on road, trails, sand and over sand dunes and hills. Sand storms risk to visibility within minutes, hence a few loops to ensure safety. Big temperature variations, starting and finishing at 5c, with 25c highs.

Supporter not required.

Photo provided by race

3.6 km swim, 175 km Bike (4000hm), 43 km run (1900hm). Support provided. Single athlete or 'Couples' option. 

Started 2021.  Jump from the boat into the Tranco reservoir to start this great adventure, swimming point to point as the sun rises. The bike traverses the mountain stage, crossing magnificent landscapes. The mountain marathon then takes you along the GR247, passing through the Castle of Hornos de Segura, to the mythical Yelmo and an impressive finish on top of another Castle in the town of Segura de la Sierra, seen as one of the most beautiful towns in Spain.

Supporter not required, but useful and race can help arrange.

Photo by Dani Moreno

A new half distance race in beautiful Mantiqueira in Brazil. A 2km swim, 100km bike (2300hm) and 26km run (700hm). Drinks and snacks provided.

 Swim the clear Santa Lídia lake. Then bike through beautiful untouched areas of the Serra da Mantiqueira, small towns, and coffee farms, showing off what the region is famous for. Then run through towns, natural scenery, and farms, to finish with a big climb to the highest spot in Serra Negra, where hang-gliders launch to ring the bell!

Supporter required but race can help arrange.

Immersed in the beauty and history of Eryri (Snowdonia), Slateman covers North Wales's most beautiful and challenging terrain, with an ascent of Yr Wyddfa (Snowdon) for those who make cut-off.

You swim in the beautiful Llyn Padarn, then ride epic mountain roads with over 2600m of elevation through Eryri's valleys and passes, and then off-road trail running in the UNESCO World Heritage Dinorwig Quarries and two different run cut-off finish options (44km/1537hm or 50km/2134hm). All under the watchful eye of England & Wales' highest peak.

 Full, Half, Standard and Sprint options.

No support required.

 Classic long distances with 2000m ascents on the bike and 1500m ascents on the run.

It's our most 'back to basics' within nature race we know. Beautifully quirky since 2013.

No fee, totally unofficial, just like minded triathletes romping around Iceland, but you still get a super-exclusive Tshirt. Plus, if the waters too cold, you don't shorten the swim, you do the final 1.3km swim midway on the bike!

Supporter requirement tbc.

Photo by Peter's wife

 A 1.9km swim, 120km bike (2200hm) and 23km (1000hm) run.

A brand new race for 2024, with successful test race in 2023. Inspired by 'the spirit of '78', going back to the basics of the first Ironman in Oahu of that year. A long challenging course across beautiful northern Portugal.

Supporter not required.

Photo by Hugo Brito

Run by The Iron Cowboy himself, James Lawrence.

A magical 3.8km point-to-point night-to-dawn swim. A 161km bike, also point-to-point, with 2970m of ascents mostly over 2 large climbs. Then a 41km run loop with 2290m of ascents, topping out at 3286m altitude. Yes, 5160m of ascents in total.

Supporter required.

Photo provided by James

Started in 2016. From boat to mountaintop. 3rd equal in ascents globally (7050m). In spectacular Northern Italy.

A 4am 3.8km swim across the lake, from boat to lighthouse. Then a 175km largely point to point bike with 4700m of ascents (finish 1000m higher). Then run 42km, traversing the valley trails and finishing at 2600m up, having done 2300m of ascents.

Supporter required (tbc).

Photo by Matteo Oltrabella

The XTRI with an epic waterfall swim finish and stunning mountaintop run.

A great 3.8km point to point swim finishing by the largest waterfall in Sweden with a 400m run to T1. Then a 205km out & back rolling (2377hm) moose dodging bike loop through the beautiful Swedish landscape. Then the 42km (1700hm) run up & over Areskutan Mountain.

New SOLO POINT FIVE in 2024. 1.8km swim, 105km 700hm bike, 23km 1331hm run.

Supporter required for full.

Photo by Kai-Otto Melau

The XTRI with the boat trip, cobblestone hairpins on the bike, run under the waterfall, and totally stunning finishers photo backdrop.

Started in 2013, a founding member of the original ALLXTRI series with Norseman & Celtman. A 3.8km swim, 180km 3770mm bike, 42km 1980m run. "SWISSMAN is a long-distance triathlon with one of the most spectacular courses in the world. It starts in the south of the country and leads over three Alpine passes into the heart of Switzerland. The finish is reached after a final climb at the foot of the massive mountain scenery of Eiger, Mönch and Jungfrau.".

Supporter required.

Photo by Sampo Lenzi

A mighty Extreme Half. Started in 2014.

 The competition route runs from Niedzica, located on Lake Czorsztyńskie, a 2.1km swim between two castles. Then a tasty 90km 1922m ascents bike and a 21km 1323m ascents run through Polish and Slovak Spiš region and ends at the top of Kasprowy Wierch in the beautiful Tatra Mountains. 

Well loved family run race. President Anna, RD Dad, Daughters, Sons, Cousins, Aunts, Uncles, friends. Just what our races are about.

Supporter not required.

Photographer unnamed

    New half distance, 3700m of ascents, that's 700m more ascents than the old full distance!

Epic cold 1.8km swim through strong currents. 

Then immediately onto the most iconic bike climb in the world, and new challenging Out & back ride. 90km, 2700hm.

 The run course takes you to the famous Kjeragbolten (jammed bolder). The course is technical and not fast. You'll be blown away by the beauty of the landscape and running along the cliff-edge over the mighty Lysefjord. 20 km, 1000hm.

Supporter not required.

Public photo

An Extreme Half with a punch, started in 2015. Fastest finish is 8hrs 12 minutes, that's how tough it is.

Set in beautiful middle of Slovakia. A 2.1km swim then a whopping 139km point to point bike ride with 3000m of ascents. Then the 23km run with 1400m of ascents around the mighty Tatras loop, topping out at 2000m altitude. And see those views! Refreshment stations provided, so no need for Support.

Run by the one and only Katerina Belicova.

Supporter not required.

Photo by Tomas Nather

Not one but two full distance Extreme's. Plus Half & Olympic options.

 Centred in beautiful Ambleside in North England and includes the Fred Whitton Sportive bike route with climbs of 20-33% gradient. Starting with the Lake Windermere swim and run topping out at Scafell Pike, Englands highest peak.

The Triathlon Full-X with 5341m of ascents was voted toughest 'Iron Man' by 220 Magazine in 2016. The Ultra-X has 5880m ascents (route choice mid-bike through Full-X). Half-X available, 2494hm.

Supporter not required.

Photographer unnamed.

The beautiful monster.

Arguably the toughest Extreme Triathlon on the planet, with a joint longest 300km course but record breaking 8900m of ascents.

  Started in 2019. Swim 4km. Bike 260km, with 7000m ascents over 7 passes. Run 36km, with 1900m ascents, most of it on a single climb up and over Mt Pilatus. Finish times typically 17 to 28hrs (cut-off). Can also be done as teams.

Supporter requirements tbc.

Photo provided by race

Started 2021, centred around the beautiful Bieszczady mountains. Part of the Diablak race family. Wataha means 'pack' (wolf pack) in Polish.

3.6 km swim in Lake Solina. Bike 175 km of the Great Bieszczady Loop with 4435 meters of elevation to finish in Cisna. Then 44 km of point to point mountain trails and 1798m of ascents to the summit of Mt Smerek.  Half & Olympic also available.

Supporter not required.

Image provided by race

"Life jackets provided for bike and run". That catches the attention. 

Started 2014, it's full distance, with a touch of Xterra. Half & relay options also.

A 2.4 mile (3.8km) swim. 113.4 miles (182km) of gravel grinding, mountain biking and stream crossing, with 8000ft (2440m) of ascents. And 26.7 (43km) miles of the "gnarliest trail and creek running", with 3700ft (1130m) of ascents. Fastest ever finish is 16 hrs 45 mins!

Supporter not required. 

Still taken from race video by Megan Peck

Started in 2015.  Full distance, 4700m of ascents. Through inaccessible forests, deep valleys and sandstone cliffs, ending atop the iconic Czech peak Jested (1012m).

Unique for it's entirely downriver swim. Easy? Think again. Jump from a 1.5m platform into the torrent in the dark. Then 9km (yes, 9km) dodging whirlpools, backflows, rocks and metal river buoys. Swim hard or freeze (12c water, 7c for last 500m). Oh yes, then 180km of bike with 3500m of ascents. Then a full mountain marathon with 1200m of ascents.

Supporter required.

Photo by Martin Vinař