FixAddiction Triathlon, 5K, 10K and Half Marathon
Sat 4 Jul 2026 Windsor, Buckinghamshire, UK

FixAddiction Triathlon, 5K, 10K and Half Marathon

A superb summer's day of running and triathlon at the stunning Olympic venue which boasts fast, flat courses with closed roads and ideal swimming conditions. A must for your schedule this year.

5 races

  • Sat 4 Jul
  • #1 of 5
Dorney Lake, Windsor

Super Sprint

10:15

Age 15 & over

£60

  • 400 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sat 4 Jul
  • #2 of 5
Dorney Lake, Windsor

Sprint

10:15

Age 15 & over

£60

  • 750 m pool swimming
  • 20 km road cycling
  • 5 km road running
  • Sat 4 Jul
  • #3 of 5
Dorney Lake, Windsor

5K

09:00

Age 11 & over

£25-£30

  • 5 km road running
  • Sat 4 Jul
  • #4 of 5
Dorney Lake, Windsor

10K

09:00

Age 15 & over

£25-£30

  • 10 km road running
  • Sat 4 Jul
  • #5 of 5
Dorney Lake, Windsor

Half Marathon

08:30

Age 17 & over

£30-£35

  • 13.1 miles road running

Event overview

Step into an energetic day of racing that blends triathlon and road running, offering a welcoming challenge for newcomers and seasoned athletes in a friendly, well-supported setting.

From fast, accessible courses to a buzzing event hub, this is a race day built around participation, motivation and shared achievement across triathlon, 5K, 10K and half marathon distances.

Highlights

  • Choice of triathlon and standalone running races in one action-packed event
  • Accessible distances ideal for first-time triathletes and runners
  • Fast, clearly marked routes designed for confidence and flow
  • Supportive, community-focused atmosphere throughout the day
  • Well-organised transitions and race schedules
  • Great event for clubs, friends and families to race together
  • Finisher rewards celebrating every achievement
  • A motivating race environment that keeps energy high from start to finish

Event video

  • Average fitness
  • Beginner-friendly
  • Event village

Timetable

  • 07:30-08:00 | Recommended arrival time
  • 08:30 | Half Marathon
  • 09:00 | 5K and 10K
  • 09:45 | Bikes must be racked by this time
  • 10:15 | Triathlon events begin

Team entries

Get as many friends, family or colleagues together and take part as a team. You are not required to stay together and each person will receive their own time however it's just fun to participate under a team name.

Wheelchairs

The routes are suitable for wheelchair users.

Dogs

Dogs may run with their owners in the 5K, 10K or Half Marathon running events but not the triathlon events. Please ensure your dog is on a short lead/harness and that you are careful on the course and respect other runners and park users.

  • Cafe
  • Changing facilities
  • Free parking
  • Park
  • Secure bag storage
  • Toilets

Event HQ

Dorney Lake
Off Court Lane, Lake End Road
Windsor
Buckinghamshire
SL4 6FJ
UK

By rail

If travelling by train the main stations for Dorney Lake are Slough (Paddington line) and Windsor and Eton Riverside (from Waterloo) but is also near Burnham, Taplow, Maidenhead and Windsor and Eton Central (branch of Paddington line).

From these stations you can get a taxi or if with a bike you can ride to the venue.

The Fix Events are proud to deliver the best in safety, fun and high-quality organised events; you won't be disappointed.

Easy parking on site and open to public so family and friends can come for support. 

A small field for the 10k which I took part in, of about 150, so it was nice and easy going with plenty of space to run around the paved paths of Dorney Lake. A lovely venue for this race. The course is a full lap around the lake, with a lap on the outer then inner loop to finish.

Chip timing with immediate results available, and worked well. 

Water at 5k was provided and marshalling along the course was good for me. Photographers along the route also. F

or a runner of modest abilities like myself this was a well worthwhile event, which I enjoyed and set myself a 10k PB. Would recommend Fix Events to runners of all abilities. Thomas H

Races at event

  • Sat 4 Jul
  • #1 of 5
Dorney Lake, Windsor
Super Sprint

10:15

Age 15 & over

£60

  • 400 m lake swimming
  • 20 km road cycling
  • 5 km road running
  • Sat 4 Jul
  • #2 of 5
Dorney Lake, Windsor
Sprint

10:15

Age 15 & over

£60

  • 750 m pool swimming
  • 20 km road cycling
  • 5 km road running
  • Sat 4 Jul
  • #3 of 5
Dorney Lake, Windsor
5K

09:00

Age 11 & over

£25-£30

  • 5 km road running
  • Sat 4 Jul
  • #4 of 5
Dorney Lake, Windsor
10K

09:00

Age 15 & over

£25-£30

  • 10 km road running
  • Sat 4 Jul
  • #5 of 5
Dorney Lake, Windsor
Half Marathon

08:30

Age 17 & over

£30-£35

  • 13.1 miles road running

Other South East events

Other UK events

4 steps to wellbeing
Sleep well

A good night's sleep is an essential foundation for a healthy lifestyle, effective training and weight control.

Train slow

Low-intensity training is easier for you, reduces the risk of injury and helps builds an efficient aerobic system.

Eat natural

Cut out sugar & junk food, reduce carbs, eat natural foods and train your body to burn fat for fuel.

Get outdoors

Fresh air, natural light and reconnecting with nature all help to improve mental and physical wellbeing.