Finished with triathlon, or ready for something new? Here are the endurance challenges that come next.
After triathlon, endurance swimming offers a fresh challenge that is kinder on the body than running yet just as demanding. UltraSwim 33.3 is the flagship: 33.3km of open water across four days in warm water, with world class safety and a strong community.
UltraSwim 33.3 is an Epic Adventure Swim Race™ covering 33.3km, the historic English Channel distance, split across five to seven point to point open water swims (we hate laps) over four days in warmer water locations (a half Channel 17km option exists). So far held in Croatia, Switzerland, Greece, Spain, Montenegro and the Caribbean, based at luxury spa hotels, with world class safety cover, premium support, a complete preparation programme and a diverse community that ranges from 14 to 74 years old, usually more women than men. From competitive Masters swimmers, triathletes and swimrunners to leisure and wild swimmers simply aiming to complete the distance. From a required pace of just 2km/h, any determined swimmer can do it. Come in a group or alone, everyone leaves with new friends for life. Award winning, all inclusive packages start from €1,575 CHECK (€750 for our 2 day Compact format)
Retiring from triathlon does not mean retiring from challenge. Endurance swimming offers a fresh test that is kinder on the body than running yet every bit as demanding. UltraSwim 33.3 is the flagship: 33.3km across four days.
The water is gentle on joints and rewards experience and patience rather than raw pace. For many former triathletes it becomes the most rewarding phase of their endurance sport, combining a real challenge with travel, community and warm water locations.
The iconic English Channel distance spread over 5 - 7 swims. Choose the full 33.3 CLASSIC, or the 33.3 / 2 BUILD 'Half Channel' which caps each swim at 5km. Life-changing for many.
Swiss precision event organisation. Boat and kayak safety cover provided on every swim. Daily briefings on conditions, route and pace. Experienced and dedicated team
Whether you come on your own or with a club, you will find your tribe, and make new lifelong bonds over 4 days of highs and lows as you reach for that 33.3 Finisher droplet
All iconic, each with their own challenges and beauty - Croatia, Switzerland, Greece, Montenegro, Spain and the Caribbean. From May to December and designed to fit your season and time constraints.
Explore the preparation programme, coaching and swim camps that get you to the start line ready.
Explore trainingThe water is gentle on joints and rewards experience. It is where many former triathletes find their best years of endurance sport.
Former triathletes share how endurance swimming became their new goal.
Endurance open water swimming is a natural next challenge. It uses your aerobic base, is lower impact than running and offers a clear, meaningful goal in the 33.3km distance.
For most people, yes. Swimming is low impact and gentle on joints, which is why many athletes move to it as they look for longevity in endurance sport.
A reasonable swimming base helps, but the preparation programme builds endurance and open water skills from there.
Download the information pack, choose an event and follow the preparation programme from your current level.