ATW Stewartby Lake Triathlon & Aquabike
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ATW Stewartby Lake Triathlon & Aquabike 2026
ATW Stewartby Lake Triathlon & Aquabike takes place at Stewartby Lake, Green Ln, Bedford MK43 9LY, and will host the 2026 East Region Adult Race Series. The venue at Stewartby Sailing Club previously hosted a sold-out GB team qualifier in 2023. The programme includes Sprint and Standard distances for both triathlon and aquabike, with relay options available.
- Sprint Triathlon: 750 m swim, 20 km bike, 5 km run
- Sprint Aquabike: 750 m swim, 20 km bike
- Standard Triathlon: 1500 m swim, 37 km bike, 10 km run
- Standard Aquabike: 1500 m swim, 37 km bike
- Relay options available for Sprint and Standard distances
The event features an open-water lake swim, a very fast, flat, lapped road bike course, and a scenic traffic-free run on flat paths alongside the lake in Marston Vale Country Park. Wetsuit hire is offered through Zone3 for the season and through a day/weekend/month hire option. Additional event details note five star reviews on Racecheck, professional commentary, experienced marshals, clearly marked course, free event photos, finish line snacks, and a custom medal. The event lists Alzheimer’s Research UK as a partner charity with donation and fundraising opportunities at checkout. Car parking is available for a small charge opposite the venue. ATW’s transfer policy allows entry transfers to future ATW events up to 48 hours before the event; refunds and transfers to another person are not offered. Visit the organization's website for the most recent information.
