Triathlons in South East
Find triathlons in South East in 2025/2026 - 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 2026
- £16-£64.50
Woking Spring Triathlon & Junior Aquathlon
Join one of the most popular triathlons, where athletes return year after year!
- Families
- Newcomers
- Event village
- Age 8 & over
- Super sprint triathlon
- Sprint triathlon
- Sprint aquathlon
- Kids aquathlon 5
- Sat 2 May 2026
- £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.
- Recycling
- Newcomers
- Event village
- Park
- Sustainability policy
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Wed 27 May 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sat 6 Jun 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Wed 1 Jul 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 12 Jul 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 18 Jul 2026
- £265-£293
- 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!
Early bird on now
- Newcomers
- Chip timing
- Enter online
- Event village
- Rural
- Age 18 & over
- 1.2 miles lake swimming
- 66 miles road cycling + 3550 ft ascent
- 14 miles trail running + 1512 ft ascent
- Sun 26 Jul 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sat 8 Aug 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Wed 26 Aug 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 13 Sep 2026
- £16-£64.50
- Early bird
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.
Early bird on now
- Families
- Newcomers
- Event village
- Age 8 & over
- Super sprint triathlon
- Sprint triathlon
- Kids aquathlon 5
- Sprint aquathlon
- Sun 20 Sep 2026
- £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.
- Families
- Recycling
- Newcomers
- Dogs allowed at venue
- Event village
- Urban
- Park
- Rural
- Free venue entry
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Lake swim 4
- Sat 26 Sep 2026
- £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.
- Recycling
- Newcomers
- Event village
- Sustainability policy
- Public transport links
- Age 15 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 12 Jul 2026
Eastbourne Triathlon and Multisport Festival
- Super sprint triathlon
- Kids triathlon
- Sprint triathlon
- Olympic triathlon
- Sea swim 2
- + 2 more races