Triathlons in South East
Find triathlons in South East in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
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- Sun 26 Apr
- £20-£74.50
Woking Spring Triathlon & Junior Aquathlon
Kick-start the season with a friendly spring triathlon and junior aquathlon, combining safe racing, supportive organisation and smooth courses perfect for confidence-building and early-season speed.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquathlon
- Kids aquathlon 5
- Sat 2 May
- £58-£120
Dorney Triathlon | May
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 9 May
- £25-£60
The All Nations Triathlon, 5K, 10K and Half Marathon Run
Delve into an action-packed day of multisport racing, featuring an inclusive Super Sprint Triathlon, 5K, 10K and Half Marathon distances for all abilities at the stunning Olympic venue!
- 5K run
- 10K run
- Half marathon
- Super sprint triathlon
- Wed 27 May
- £58-£78
Midweek Dorney Triathlon | May
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.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sat 6 Jun
- £58-£120
Dorney Triathlon | June
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Wed 1 Jul
- £58-£78
Midweek Dorney Triathlon | July
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sat 4 Jul
- £25-£60
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.
- Super sprint triathlon
- Sprint triathlon
- 5K run
- 10K run
- Half marathon
- Sun 12 Jul
- £58-£120
Dorney Triathlon | July
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 18 Jul
- £270-£295
- Early bird
Castle To Coast Triathlon
A one-of-a-kind triathlon adventure from castle to coast – swim, bike, run and soak up the best of the North and South Downs, fully supported all the way, no navigation needed!
- 1.2 miles lake swimming
- 66 miles road cycling + 3550 ft ascent
- 14 miles trail running + 1512 ft ascent
- Sun 19 Jul
- £38-£80
Eton Dorney Family Triathlon
Eton Dorney Family Triathlon sees the return of junior racing to Dorney Lake alongside the one and only sprint triathlon event at the venue.
- Novice triathlon
- Kids triathlon 5
- Super sprint triathlon
- Sprint triathlon
- Sun 26 Jul
- £58-£120
Dorney Triathlon | July
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 8 Aug
- £58-£120
Dorney Triathlon | August
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Wed 26 Aug
- £58-£78
Midweek Dorney Triathlon | August
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 13 Sep
- £20-£74.50
Woking Autumn Triathlon & Junior Aquathlon
Dive into clear waters, ride fast on quiet roads and run strong at a friendly, autumn challenge offering triathlon and aquathlon options for all ages and abilities.
- Super sprint triathlon
- Sprint triathlon
- Kids aquathlon 5
- Sprint aquathlon
- Sun 20 Sep
- £30-£97
Eton Dorney Triathlon & Swims
The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for all levels of triathletes and swimmers to enjoy in an exclusive setting.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Lake swim 4
- Sat 26 Sep
- £58-£120
Dorney Triathlon | September
Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 3 Oct
- £45-£120
Dorney Duathlon & Triathlon | October
Take on a Super Sprint, Sprint or Standard distance and embrace the opportunity to race around this unique and inspiring Olympic venue!!This event is draft-illegal.
- Super sprint duathlon
- Sprint duathlon
- Standard duathlon
- Super sprint triathlon
- Sprint triathlon
- + 3 more races
- Sun 24 May
- £30-£100
Bewl Water Triathlon
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sun 12 Jul
- £45-£179
Eastbourne Triathlon and Multisport Festival
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Charity swim
- Sprint aquathlon
- + 3 more races