Dorney Lake Triathlon May 2026

Join us for the Dorney Lake Triathlon on Saturday 2nd May 2026

Take on a Super Sprint or Standard triathlon around Dorney Lake on Saturday 2nd May 2026 and take the opportunity to race around this unique and inspiring Olympic venue!

The purpose built lake is perfect for the swim and the flat grounds lend themselves to a totally flat bike and run course, the ideal venue for a chip timed personal best. Each discipline will be accurately marked out with distance flags and we will have plenty of helpers to keep you on track and to encourage you all the way to the finish.

For those who don’t want to take part in the run, there is also an Aquabike (swim-bike) option, and for those who would like to compete as a team, there is a relay option, which allows 2 or 3 individuals to share the disciplines between them.

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

Unique Themed Medal

Free Race Photos

Chip-timed results

Post Race Goodies

Each kilometre is accurately marked with distance flags and our friendly marshals will guide and cheer you all the way to the finish. We cannot wait to welcome you to Dorney Lake!

With RunThrough you can expect a friendly team of marshals to help guide you round the course and cheer you on to the finish, a lively and well-serviced event village with plenty of food and drink options including free goodies from our partners at the finish line after your hard effort.

We have been extensively researching what runners consider important, and sustainability is fast becoming the top issue. Click here to see what RunThrough is doing for sustainability.

You can now grab your Dorney Lake event t-shirt for more than 30% off when you buy it as part of your entry on checkout! With the event logo printed on the chest, it’s the perfect keepsake to celebrate your race and wear your achievement with pride!

We can do this with our partner RT Kit as part of a strategic decision to raise awareness about the quality of the product whilst reducing the overall cost of events for those who would prefer not to have a t-shirt included.

Come and enjoy the day with us. Once you enter you will receive a confirmation email. More information will be sent closer to the event.

We can’t wait to see you on the start line!