Duathlons in the UK
With a variety of road and off-road events, ranging from super sprint to long distance, duathlons are similar to triathlons but with the swimming leg replaced by a run to give a run-bike-run format. Select your location to find duathlons in your area, read more about the distances below or scroll down for the UK's biggest events.
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Duathlon distances
Find out more about common duathlon event distances below to help find your perfect event.
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The beginner's guide to duathlons
Getting started in run-bike-runs is easier than you might think!
Duathlons in 2025
Featured events are listed below - select a month/region or the map view to see all events.
- Sun 4 May
- £53-£94
ATW St Neots Triathlon | Race 1
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Sun 11 May
- £20-£40
Central Lancashire Junior and Super Sprint Duathlon - Spring
Make use of the superb facilities at the University of Central Lancashire. You will be running and cycling on their amazing Crit track and brand-new athletics track - all traffic-free.
- Kids duathlon 4
- Super sprint duathlon
- Sprint duathlon
- Sun 22 Jun
- £78.99-£249.99
Cardiff Triathlon & Duathlon
Situated in the renowned Cardiff Bay, this event stands out as a truly memorable city race. The event village is on Roald Dahl Plass in front of the Wales Millenium Centre.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon 2
- Half Ironman
- Sprint duathlon
- Sun 29 Jun
- £30-£40
Woodford Community Duathlon | June
Set amid rural Woodford with its picturesque scenery, this event has something to suit all abilities. There will be a great atmosphere throughout the morning!
- Super sprint duathlon
- Sprint duathlon
- Sun 6 Jul
- £53-£94
ATW St Neots Triathlon | Race 2
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Sprint aquabike
- Sun 20 Jul
- £20-£40
Central Lancashire Junior and Super Sprint Duathlon - Summer
Make use of the superb facilities at the University of Central Lancashire. You will be running and cycling on their amazing Crit track and brand-new athletics track - all traffic-free.
- Kids duathlon 4
- Super sprint duathlon
- Sprint duathlon
- Sat 2 - Sun 3 Aug
- £31.99-£249.99
Craft Snowman Triathlon & Duathlon, Snowman Swim & Ogwen Yr Helgi Du Trail Runs
Awarded the Event of the Year (2021) in the Welsh Triathlon Awards, The Craft Snowman is well known as the toughest multi-terrain triathlon and duathlon in the UK. Plus swims and trail running events.
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sprint duathlon
- 10K run
- + 5 more races
- Sun 10 Aug
- £53-£94
ATW St Neots Triathlon | Race 3
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Standard aquabike
- Sun 17 Aug
- £30-£45
Manchester Airport Duathlon | August
Have you got what it takes to take on the Super Sprint or Sprint Duathlon at Manchester Airport?
- Super sprint duathlon
- Sprint duathlon
- Sat 13 - Sun 14 Sep
- £10-£53
Darley Moor September Duathlon and Trail 10km
Dive into the excitement of dual-discipline sports and trail running at Darley Moor! These events are packed with fun for everyone, from seasoned pros to enthusiastic beginners.
- Kids duathlon 5
- Sprint duathlon
- 10K run
- Sun 12 Oct
- £53-£78
ATW Holdenby House Duathlon
Based in the grounds of the 2,000 acre Holdenby Estate, the traffic-free run lap follows a scenic trail and the rolling bike course enjoys fast-riding country roads.
- Sprint duathlon
- Standard duathlon
- Sun 26 Oct
- £53-£78
ATW Grafham Duathlon
Join ATW, the largest multisport organiser in the UK, at the iconic Grafham Water - a venue that has been used for award-winning events, national championships and GB qualifier races.
- Sprint duathlon
- Standard duathlon
- Sun 2 Nov
- £42-£52
Devon Duathlon Autumn
Roadford Lake is a great venue for a duathlon with very quiet roads, traffic-free trails, lots of space for transition and parking. The Standard Race is a qualifier for the 2026 World champs.
- Sprint duathlon
- Standard duathlon
- Sun 9 Nov
- £47-£88
Dorney Duathlon - November
Take on a Super Sprint, Sprint or Standard distance and take the opportunity to race around this unique and inspiring Olympic venue!!
- Super sprint duathlon
- Sprint duathlon
- Standard duathlon
Duathlons near you
Select your location for duathlons in your area.