Triathlons in UK in May 2025

Find triathlons near me in UK in May 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Bike past historic landmarks, and run beside the Great Feild at Poundbury. As you finish each leg of the course, you’ll get closer to the crowds of people cheering you on at that final stretch.

Sun 25 May
£41.50

Sun 25 May
£41.50

Dorchester, Dorset, UK

The Dorchester Sprint Triathlon

Bike past historic landmarks, and run beside the Great Feild at Poundbury. As you finish each leg of the course, you’ll get closer to the crowds of people cheering you on at that final stretch.

Newcomers
Enter online
Undulating
Event village
Plastic-free event
Age 16 & over

300 m pool swimming
21 km road cycling
5 km road running

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Sun 25 May
£78-£99

Sun 25 May
£78-£99

Windsor, Buckinghamshire, UK

Dorney Sprint Triathlon

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Chip timing
Enter online
Flat
PB
Age 15 & over

750 m lake swimming
20 km road cycling
5 km road running

Sun 25 May
£99-£120

Sun 25 May
£99-£120

Windsor, Buckinghamshire, UK

Dorney Standard Triathlon

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Chip timing
Enter online
Flat
PB
Age 17 & over

1500 m lake swimming
40 km road cycling
10 km road running

Sun 25 May
£58

Sun 25 May
£58

Windsor, Buckinghamshire, UK

Dorney Super Sprint Triathlon

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Chip timing
Enter online
Flat
PB
Age 15 & over

400 m lake swimming
10 km road cycling
2.5 km road running

Incorporating Sprint Triathlon 2026 World Championships Qualifier! Dorney Lake Events provides you with an opportunity to race like an elite around this unique and inspiring Olympic venue.

Sun 25 May
£80

Sun 25 May
£80

Windsor, Buckinghamshire, UK

Dorney Lake Draft-Legal Triathlon

Incorporating Sprint Triathlon 2026 World Championships Qualifier! Dorney Lake Events provides you with an opportunity to race like an elite around this unique and inspiring Olympic venue.

Newcomers
Enter online
Flat
Event village
Age 15 & over

750 m lake swimming
19 km road cycling
5 km road running

Wed 28 May
£58

Wed 28 May
£58

Windsor, Buckinghamshire, UK

Midweek Dorney Super Sprint Triathlon

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

Chip timing
Enter online
Flat
PB
Age 15 & over

400 m lake swimming
10 km road cycling
2.5 km road running

Wed 28 May
£78

Wed 28 May
£78

Windsor, Buckinghamshire, UK

Midweek Dorney Sprint Triathlon

Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.