Dorney Lake Triathlon October
From RunThrough Events
- Date Sat 3rd October 2026
- Time 07:30
- Location Windsor, Berkshire
- Price £60.00 - £122.00
- Races 7 races
- Distances Sprint, Olympic
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Event summary
Get ready for an exhilarating day of athleticism at the Dorney Lake Triathlon on Saturday, October 3rd, 2026! Organised by RunThrough Events, this thrilling race takes place at the stunning Dorney Lake in Windsor, Berkshire, a purpose-built Olympic venue that promises a fantastic experience for all participants. Athletes can choose from multiple race distances, including the Super Sprint Triathlon featuring a 400m swim, 9.5km bike ride, and 2.5km run; the Standard Triathlon with a 1500m swim, 38km bike ride, and 10km run; and the Sprint Triathlon, which offers a 750m swim, 19km bike ride, and 5km run.
Not only does this event cater to seasoned triathletes, but it also welcomes newcomers with options like the Aquabike (swim-bike) and team relays, allowing 2 or 3 individuals to share the disciplines. With a flat and fast course, complete with distance flags and enthusiastic volunteers cheering you on, the Dorney Lake Triathlon is the perfect opportunity to chase your personal best. Mark your calendars for this exciting day of competition and camaraderie – you won't want
Not only does this event cater to seasoned triathletes, but it also welcomes newcomers with options like the Aquabike (swim-bike) and team relays, allowing 2 or 3 individuals to share the disciplines. With a flat and fast course, complete with distance flags and enthusiastic volunteers cheering you on, the Dorney Lake Triathlon is the perfect opportunity to chase your personal best. Mark your calendars for this exciting day of competition and camaraderie – you won't want
Dorney Lake Triathlon October
Sat 3rd October 2026
Organiser's Description
Join us for the Dorney Lake Triathlon on Saturday 3rd October 2026
Take on a Super Sprint or Standard triathlon around Dorney Lake on Saturday Saturday 3rd October 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
Take on a Super Sprint or Standard triathlon around Dorney Lake on Saturday Saturday 3rd October 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
Races
-
Super Sprint Triathlon
Sat 3rd October 2026 (10:00)
£60.00
Booking for more than 1? -
Sprint Triathlon
Sat 3rd October 2026 (07:30)
£80.00
Booking for more than 1? -
Standard Triathlon
Sat 3rd October 2026 (08:30)
£101.00
Booking for more than 1? -
Sprint Relay
Sat 3rd October 2026 (07:45)
£101.00 per team
Team 3 -
Standard Relay
Sat 3rd October 2026 (08:45)
£122.00 per team
Team 3 -
Sprint Aquabike
Sat 3rd October 2026 (07:45)
£70.00
Booking for more than 1? -
Standard Aquabike
Sat 3rd October 2026 (08:45)
£91.00
Booking for more than 1?
Reviews
- 5
- 4
- 3
- 2
- 1
4.6
11 reviews
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!
Antony
·a year 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.
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
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
James
·2 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.
Patrick
·3 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.
Matthew
·3 years ago
Well organised event. Kept well informed via email and SMS. Clear race briefing video. Very flat course for my first triathlon. Cheers
TONY
·3 years ago
Great day all round !
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!
Location
Dorney Lake, Windsor, SL4 6, United Kingdom
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Dorney Lake Triathlon October
