Dorney Lake Triathlon October 2026

Join us for the Dorney Lake Triathlon on 3rd October 2026

Race at an iconic Olympic venue with calm open water and flat, traffic-free laps beside the lake. Choose Super Sprint or Standard and enjoy smooth organisation, clear wayfinding, and supportive marshals from the first stroke to the finish.

The purpose-built lake sets you up for a confident swim. Wide roads and paths create a totally flat bike and run course, ideal for accurate pacing and chip-timed personal bests. Prefer a swim-bike day or want to race as a team? Enter the Aquabike or take on the relay with friends.

COURSE DETAILS

Super Sprint Triathlon

400m Swim | 9.5km Bike - 2 Laps | 2.5km Run

Elevation - 20m | Terrain - Road

Sprint Triathlon

750m Swim | 19km Bike - 4 Laps | 5km Run

Elevation - 40m | Terrain - Road

Standard Triathlon

1500m Swim | 38km Bike - 8 Laps | 10km Run

Elevation - 80m | Terrain - Road

RACE DISTANCES & START TIMES

07:30 am – Sprint Triathlon

Under50 ‘Open’ category

07:45 am – Sprint Triathlon

50 and Over ‘Open’ category & All Female category & All Sprint Relays & All Sprint Aquabike

08:30 am - Standard Triathlon

Under40 ‘Open’ category

08:45 am – Standard Triathlon

40 and Over ‘Open’ category & All Female category & All Standard Relays & All Standard Aquabike

10:00 am - Super Sprint Triathlon

RACE END

13:30 pm

Included in the entry