Dorney Lake Triathlon

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From votwo events

  • Date Sun 21st September 2025
  • Time 08:00
  • Location Windsor, Berkshire
  • Price £62.00 - £97.00
  • Races 6 races
  • Distances Super Sprint, Sprint, Olympic

Top rated

This is a popular event

Event summary

Get ready for an exhilarating day of athleticism at the Dorney Lake Triathlon, hosted by Votwo Events on Sunday, September 21, 2025. Set in the picturesque surroundings of Windsor, Berkshire, this event takes place at the iconic Eton Dorney Olympic venue, known for its stunning clear lake and pan-flat, traffic-free roads.

Whether you're a seasoned triathlete or a first-time racer, the Dorney Lake Triathlon offers the perfect environment to challenge yourself and achieve your personal best. With a smooth tarmac course designed for speed, participants can expect a thrilling race experience. Join us for a day filled with camaraderie, competition, and the breathtaking beauty of one of the UK's premier triathlon venues!

Dorney Lake Triathlon

Sun 21st September 2025

A large group of swimmers wearing black wetsuits and orange swim caps start a race in open water. The foreground shows churning water, and the background features lush green trees under a partly cloudy sky. A "Start" banner is visible on the right side. Close-up of a bicycle with a bright orange swim cap hanging from the handlebars. Blurred in the background, athletes prepare for a triathlon, some wearing wetsuits and swim caps. A green, outdoor environment suggests they are at the starting point. A group of swimmers competes in a triathlon, swimming towards the shore in a lake. Kayakers and rescue personnel observe from the water. A large tent branded with "VO:" and spectators are visible in the background amidst greenery. An overhead view of a triathlon transition area beside a body of water. Numerous bicycles are parked in rows, and participants are preparing for the next stage of the race, with some walking and others adjusting their gear. The sky is overcast.

Organiser's Description

The Olympic venue, Eton Dorney, offers pan flat, traffic-free roads, and a beautiful clear lake. The venue is private and specifically hired for the purpose of a traffic-free triathlon event.

Sunday 21st September 2025

Flat and very, very fast! Dorney Lake is renowned for its traffic-free, smooth tarmac course. The perfect setting for first-time racers and more experienced athletes alike

Races

  • Individual - Super Sprint

    450m/10km/2.5km

    £62.00

    Booking for more than 1?
  • Individual - Sprint

    750m/20km/5km

    £72.00

    Booking for more than 1?
  • Individual - Standard

    Individual - 1.5km/40km/10km

    £82.00

    Booking for more than 1?
  • Team Entry - Super Sprint

    £77.00

  • Team Entry - Sprint

    £87.00

  • Team Entry - Standard

    1.5km/40km/10km

    £97.00

Reviews

  • 5
  • 4
  • 3
  • 2
  • 1

4.4

17 reviews

NB
Nigel

·3 months ago

I love these races. Off road, so no horrid early hours start. Officials are both efficient and out to provide a fun day out. Good quality facilities and marshaling.
LO
Laura

·3 months ago

A good event in a great location, with onsite parking. I felt very safe in the water, with plenty of safety crew overseeing the competitors. The pre race briefing was comprehensive and very clear. On the downside, Transition was chaotic, with competitors from all the different events mingled in together. I would suggest this needs to segregated by event to ensure later competitors getting ready, do not obstruct racers progressing through Transition. At the finish there was no water or drink which I felt was poor. However, I would do this event again.
TM
Trevor

·3 months ago

Excellent venue for Triathlon events. Pan flat bike and run routes on dedicated closed road. Despite the bike route being 8 loops, there is plenty of width for multiple people to overtake at the same time, so no bottle necks. I was surprised at the number of people getting punctures & mechanicals (at least 10 out of 340), perhaps the course needs a road sweeper put over it once a year.
DF
Debbie

·a year ago

Fantastic weekend, we travelled down from Yorkshire Saturday, and stayed in a hotel. Arrived at the venue, easy to register and rack up in transition. The guy giving the pre start information was hilarious, put everyone at ease. The course is fabulous, good instructions, well worth taking part. This is my second time at Dorney Lake, and it wont be my last
AB
Abigail

·a year ago

The race was well set up and the staff were friendly. The flats are great and at the top of the lake it’s so quiet it felt like I was going on a woodland ride! The spectator spaces were okay but there weren’t any seats which isn’t great for those with access issues! Also we couldn’t find the place for the life of us - more detailed instructions to get from the station to the venue by bike are entirely needed and weren’t provided.
BH
Ben

·a year ago

Organisation of the race was nearly perfect. Signage to the event was really good, athlete check in was super smooth. I really liked the security checks for entry into and out of the transition area. The only thing that needs to be improved is the transition area itself. Was chaos with athletes racing and also athletes in later waves setting up. There were a lot of issues with people putting bikes too close to others too, I came back into t2 and struggled to re rack my bike because somebody put there bike too close. Maybe setting out sections with tape on the bar for each athlete would make it better and easier. Or set a section for each wave. Overall event was really well run hence the 4 stars. First one done onto the next one
AP
Astrit

·a year ago

Great event very well signed, clean, plenty marshals to help and good facilities
CM
Chris

·a year ago

Great event! Lovely location, very well organised, perfect conditions. Highly recommend!
Robert avatar
Robert

·2 years ago

Very well organised. Ideal location for beginners. Fast, flat bike and run courses. Lake swim is excellent as the visibility is very good. I’ve done this event quite a few times over the years. Things to improve - more staff for food places. Queues were long. Can’t fault the event at all though and in such a beautiful setting.
MC
Max

·2 years ago

Great day for a very nicely organized triathlon! Access to the site was difficult if you don't have a car so maybe something to address for the next editions! Thanks for the great event!
AH
Alexandra

·2 years ago

There was very little security in place in the transition area- anyone could walk in and out which was really concerning. When I came to leave at the end with all my stuff, the guy didn’t even check I had the right bike!! 1st event I’ve ever been to where there was no prize giving either. Day was okay and lovely venue. I’ve raced at Dorney before but it was far better organised so would unlikely return with this event organiser running it. Security of my kit is a big deal!
PR
Paula

·2 years ago

The location for the race is beautiful and was really well organised. All information was given when you arrive and was well signed which was perfect for me as it was my first race. The picture of the site map was quite pixelated so couldn’t work it out before I arrived which is the only reason I didn’t give 5 stars. Good facilities for supporters and allowed to bring dogs too.
HM
Harpreet

·2 years ago

Really well organised! The water was really clear, the bike and run course was lovely and flat. Event organisers were really helpful. My only suggestion would be numbering the bikes in transition areas for the triathlon and maybe a post race snack should be included in the price?
LM
Lucy

·2 years ago

Great venue, really well organised and good communication beforehand. Only drawback is that it's not the best venue for supporters, particularly on the bike leg.
Anna Agnethe avatar
Anna Agnethe

·2 years ago

Lovely venue for smashing your time, really enjoyed it. If you’re after podiums and freebies post-race this won’t be it though. GPS tracking is an extra £5
OB
Olivier

·2 years ago

I was a bit reluctant to sign up because I thought that 8 laps on the bike course would be a draft fest and dangerous. I was wrong. The competitors were well scattered so there was really no danger at all. I had a great time racing on a fast course. I highly recommend it, especially for beginners who will benefit from a friendly atmosphere and a small field.
MP
Martyna

·2 years ago

Great beautiful venue on Eton College grounds. Simple course layout for swimming, cycling and running. Course quite flat. Only comment - it would be nice if there was a bike tool station with a pump like in other events.
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Location

Eton Dorney Rowing Centre, Windsor, SL4 6, United Kingdom

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