This year, we’re taking things up a notch by bringing together three epic events into one unforgettable day. The iconic ATW Odyssey 12, the legendary Odyssey Triathlon, and the St Neots Triathlon (Race 2) will all take place side by side as part of the brand new ATW First to Full Triathlon Festival.

It’s more than just racing — the whole day will be filled with energy, excitement and celebration. Athletes will push their limits, cheered on by family, friends and spectators, while a buzzing festival atmosphere brings everything to life with live entertainment, tasty food and activities for all ages.

The ATW First to Full Triathlon Festival isn’t just about crossing the finish line — it’s about being part of something bigger. Whether you’re racing, supporting, or soaking up the atmosphere, this is a day not to be missed.

Welcome to the fourth annual ATW Odyssey Triathlon, an epic journey of self-discovery through Swim-Bike-Run in the beautiful Cambridgeshire countryside.

To celebrate the success of this incredible event, we've introduced the popular half distance triathlon option for you to choose from.

Choose between:

• Full Odyssey Triathlon:

  • 3.8km swim in the meandering River Ouse
  • 180km cycle through scenic Cambridgeshire
  • 42.2km marathon around the picturesque town of St Neots
     

• Half Odyssey Triathlon:

  • 1.9km swim
  • 90km cycle
  • 21.1km run, all around stunning St Neots

This event takes place alongside the Odyssey Aquabike if you fancy tackling the challenge without the run.

Why Participate in the Odyssey Triathlon?

The Odyssey is more than just a triathlon - it's a transformative experience. Overcome physical and mental challenges of a long distance triathlon and bask in the achievement of completing your personal Odyssey. This event is open to everyone, regardless of ability, with plenty of activities to keep the whole family entertained.

Spectator Highlights

The Odyssey triathlon course offers unparalleled spectator-athlete interaction, with multiple cheering points on both the bike and run.
New for 2025, the bike course will pass the RaceHQ every 45km, and the vibrant 'Tent of Enlightenment' will be passed on each 7k run lap.

Food, drinks, music, and seating are all going to be available to ensure an enjoyable experience for supporters.

Event Details

• Cutoff Times:
  • Full Odyssey: 16 hours
  • Half Odyssey: 14 hours
• Bike Leg: Draft illegal
• Wetsuit Hire: Zone3 wetsuits available

Odyssey Triathlon Race Day Logistics

Race Pack Collection: At the event venue the day before or the morning of the race

Bike Racking: On race day, 90 minutes before the start

Final Details: Will be shared one week before the event

Family Fun

ATW ensures a memorable day for all. Free children’s activities will be provided at Regatta Meadow, the event HQ. Enjoy the festival atmosphere with food, drinks, and music in the 'Tent of Enlightenment' and the St Neots town centre a short walk away.

Accommodation

Basic camping is available on Friday night (limited facilities).

Want to hire a wetsuit for the season? We are proud to offer Zone3 wetsuits. Find out more HERE

Want to hire a wetsuit for a day, weekend or month? Find out more HERE

Finisher Rewards

All finishers will receive an exclusive Odyssey medal, t-shirt, and goodies!

Ready to embark on your Odyssey? Register now and experience the adventure of a lifetime!

Grafman, at the start of June, is the perfect warm up event for the ATW Odyssey Full distance Triathlon. If you book onto both events at the same time, you will save £50. Please contact us via email, for a discount code. events@atwevents.co.uk   

Event Organiser

ATW was established in 2011 by James Shipley. We have now become a national events company in the UK, specialising in Running, Triathlon, Duathlon, Aquathon, Cycling, Swimming and all permutation of swim-bike run events. With over 40,000 entries a year, ATW has become a firm favourite amongst people who are determined to Dream, Believe and Achieve.