Dorney Lake Triathlon 26th July

Dorney Lake Events

From Dorney Lake Events

4.5 · 14 reviews
Sunday 26th July 2026 Past event
07:30
Windsor
£61.48–£127.20 · 7 races
Sprint, Olympic

Rated 4.5/5 from 14 reviews

53 took part

Event summary

Get ready for an exhilarating day of athleticism and camaraderie at the Dorney Lake Triathlon, taking place on Sunday, 26th July 2026, in the scenic Windsor, Berkshire. Organized by Dorney Lake Events, this exciting event invites participants to tackle the stunning Super Sprint and Standard triathlon courses set against the backdrop of a world-class Olympic venue. The purpose-built lake offers a perfect swimming experience, while the flat terrain ensures a smooth ride and run, making it an ideal setting for achieving personal bests.

Participants can choose from various race distances including the Super Sprint Triathlon featuring a 400m swim, 9.5km bike ride, and 2.5km run; the Sprint Triathlon with a 750m swim, 19km bike, and 5km run; or the Standard Triathlon that includes a 1500m swim, 38km bike, and 10km run. For those preferring a swim-bike challenge, the Aquabike option is available, and teams can join in the fun with a relay category. With dedicated volunteers to guide and cheer you on, the Dorney Lake Triathlon promises to be a memorable event for athletes of all levels. Don't miss out on

Reviews

4.5

14 reviews

RM
Rog McDonnell

Reviewing the 2026 edition · 2 months ago

Really badly organised. Queues for registration were very long and disorganised even when we arrived early. No priority for the sprint tri starting first. We ended up missing the race briefing and not having time to set up our stuff. Even though the venue is brilliant, it just felt under staffed and badly organised, which ruined or first triathlon experience.
WW
Will Willetts Verified entrant

Took part in the 2026 edition · 2 months ago

Well organised, great location, good value event.
RP
Robert Peake Verified entrant

Took part in the 2026 edition · 5 months ago

Superlative organsiaation at a perfect tri venue, with clear and friendly support throughout the day from the race team and fellow competitors. I booked for another the next morning.
RW
Rob Waterhouse Verified entrant

Took part in the 2025 edition · 1 year ago

Really well organised event, despite the very early start! Impressive how so many different events are co-ordinated on the same day.
As a first timer, it was a bit daunting and the only thing that would have made it slightly easier, if there were pre-made holes in the number for your strings on the number belt!
AC
Antony Cooper Verified entrant

Took part in the 2024 edition · 2 years ago

Really well organised and huge amount of support to help complete the event. It's perfectly set and self contained. Looking forward to next year's event.
SC
Stephen Clark Verified entrant

Took part in the 2024 edition · 2 years ago

The race itself was a 5/5 event. The disappointment was the lack of lack of catering and refreshments. One van that just did teas / coffees / soft drinks. The catering room in the pavilion had nothing for vegetarians, hardly anything left, this was at 12 noon.
Just one small merch pop up with not much stock.
Other events we've attended at Dorney Lake have had so much more.
Race was good and well organised though
MH
max humphries Verified entrant

Took part in the 2023 edition · 3 years ago

A perfect event. There was a very clear pre race information pack and any questions were promtly answered. Everybody I interacted with both on the day and before the event was absolutely lovely and I look forward to coming back. A nice flat course really opens up the opportunity for people to come along and try the sport that are otherwise intimidated. 10/10 recommended
JS
James Sellman Verified entrant

Took part in the 2023 edition · 3 years ago

Brilliant venue and very well organised on the day. My only faults were how long it took to get our raceday information pack and the lack of water stations or shade on the 10k run.
MN
Martin Nicholas Verified entrant

Took part in the 2023 edition · 3 years ago

First Triathlon, extremely well organised and hugely enjoyable. Will do again
PC
Patrick Cheong-See Verified entrant

Took part in the 2022 edition · 4 years ago

This was a great venue to do my first sprint triathlon. The event was very well organised and the layout of the swim, ride and run were simple to navigate. The course for riding and running are nice and flat so a great way to ease you into the sport.
AM
Ashwin Menon

Reviewing the 2020 edition · 4 years ago

Superbly organised event and the course is epic. Great swim loop and flat bike course. I loved it and will definitely do it again.
MD
Matthew Durnan Verified entrant

Took part in the 2022 edition · 4 years ago

Well organised event. Kept well informed via email and SMS. Clear race briefing video. Very flat course for my first triathlon. Cheers
TM
TONY MCCARTHY Verified entrant

Took part in the 2022 edition · 4 years ago

Great day all round !
EH
Edward Hicks Verified entrant

Took part in the 2022 edition · 4 years ago

A great event at a fantastic venue! Lovely Marshalls and supporting crowds. The only thing I would say is there wasn't a race briefing at the beginning - I thought we had to swim 2 laps of 750m, but it turned out it was only 1 lap of 1500m. Only a minor thing, otherwise it was amazing!

Races

  • Sprint Distance Triathlon

    07:30

    £82.68

    Entries closed

  • Sprint Distance Aquabike

    07:45

    £72.08

    Entries closed

  • Sprint Distance Triathlon Relay

    Team of 2–3

    07:45

    £104.94 per team

    Entries closed

  • Standard Distance Triathlon

    08:30

    £104.94

    Entries closed

  • Standard Distance Aquabike

    08:45

    £94.34

    Entries closed

  • Standard Distance Triathlon Relay

    Team of 2–3

    08:45

    £127.20 per team

    Entries closed

  • Super Sprint Distance Triathlon

    10:00

    £61.48

    Entries closed

Event information

Organiser's description

Join us for the Dorney Lake Triathlon on Sunday 26th July 2026

Take on a Super Sprint or Standard triathlon around Dorney Lake on Sunday 26th July 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

Location

Dorney Lake, Court Lane, off Lake End Road, Windsor SL4 6FJ

SL4 6FJ, Windsor, United Kingdom

Dorney Lake Events

Dorney Lake Events

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Since 2017
Events 150+
Avg. review 4.5
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