Dorney Lake Triathlon September 2026 - sold out

26 SepSold out

Results· Saturday, 26 September 2026

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5k 10k Half Marathon Marathon Super Sprint Triathlon Sprint Aquabike Sprint Triathlon Standard Aquabike Standard Triathlon

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Dorney Lake Triathlon

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Dorney Lake Triathlon September 2026

Name: Dorney Lake Triathlon September 2026
Start: 2026-09-26T07:30:00+00:00
End: 2026-09-26T13:30:00+00:00
Location: Dorney Lake

Date

Saturday, 26 September 2026

Start Time

First race starts 07:30

Location

Dorney Lake

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Event guide

Timings, parking, bag drop and the course: everything you need for race day.

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Race Entry Summary

Sprint Triathlon

£78(+ 5% booking fee)

Sold out

Sprint Aquabike

£68(+ 5% booking fee)

Sold out

Sprint Relay

£33(+ 5% booking fee)

Sold out

Standard Triathlon

£99(+ 5% booking fee)

Sold out

Standard Aquabike

£89(+ 5% booking fee)

Sold out

Standard Relay

£40(+ 5% booking fee)

Sold out

Super Sprint Triathlon

£58(+ 5% booking fee)

Sold out

Macmillan Cancer Support - Sprint Triathlon Entry

£30(+ 5% booking fee)

Sold out

Macmillan Cancer Support - Standard Triathlon Entry

£35(+ 5% booking fee)

Sold out

Macmillan Cancer Support - Super Sprint Triathlon Entry

£25(+ 5% booking fee)

Sold out

About This Event

Join us for the Dorney Lake Triathlon on Saturday 26th September 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.

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 Day Schedule

07:30 amSprint 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

Race Day Schedule

10:00 amSuper Sprint Triathlon
13:30 pmRace End

Included in the entry

Unique Themed Medal

Free Race Photos

Chip-timed results

Post Race Goodies

This is a partner event. RunThrough memberships can be used for entry; however, once the event sells out, no additional places will be available, including for members. Please note there will be no RunThrough member desk, and member bibs cannot be used at this event.

Event Location: Dorney Lake, Windsor, Berks

The Route

Our Partners

In support of

Macmillan Cancer Support

Run for Macmillan Cancer Support Why join Team Macmillan?

Event Information

Dorney Lake Triathlon Sprint & Standard Maps

Event Location: Dorney Lake, Windsor, Berks

Event Village Opens

05:30

Baggage

We will have a secure marquee where you can leave your baggage. We recommend you bring as little baggage as possible. Your baggage tag is attached to your race number, you simply tear it off and attach it to your bag. To collect, show your number to our staff and they will help you find your baggage.

Toilets

There will be portaloos available in the event village next to the boathouse. The toilets are a short distance from the transition area.

Water & Refreshments

There will be a water station available on each lap of the 5k course (at around the 2.5km mark). There will also be a bottle of water waiting for you at the finish line. We recommend bringing your own water with you to stay hydrated in the lead up to the event and running with a hydration where possible.