0040
Triathlons Found In the South East
View all ↓Triathlons | South East | 2025 - 2026
The most comprehensive list of Triathlons in the South East. Discover, compare and book the best South East Triathlons!
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Race Calendar: Triathlons In The South East
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Dorney Lake Triathlon
Windsor, Berkshire
21 Sep 25
£62.00 - £97.00
4.4
ATW Box End Mixed Team Relay (incorporating British Triathlon Mixed Team Relay Championships)
Box End Lakes,Box End Rd, Bedford MK43 8RN
17 May 25
£37.10 - £148.40
ATW Box End Triathlon
Box End Lakes,Box End Rd, Bedford MK43 8RN
18 May 25
£72.08 - £127.20
ATW Centurion 100KM Triathlon Box End
Box End Lakes,Box End Rd, Bedford MK43 8RN
18 May 25
£106.00 - £148.40
Swim Bike Run
Herne Bay, Kent
24 May 25
£20.00
Dorney Lake Draft-Legal Triathlon - incorporating Sprint Triathlon 2026 World Championships Qualifier
Dorney Lake, Off Court Lane, Windsor, Berks, SL4 6QP
25 May 25
£84.80
Dorney Evening Triathlon
Windsor, Buckinghamshire
28 May 25
£61.00 - £80.00
5.0
Henley Triathlon 2025
Henley-on-Thames, Oxfordshire
01 Jun 25
£89.00 - £99.00
Dorney Triathlon- June 2025
Windsor, Berkshire
07 Jun 25
£60.00 - £101.00
4.6
The One on the River - Marlow
Marlow, Buckinghamshire
08 Jun 25
£25.00 - £110.00
5.0
Eastbourne Triathlon
Eastbourne, East Sussex
08 Jun 25
£16.00 - £169.00
4.5
Royal Windsor Triathlon
Windsor, Berkshire
15 Jun 25
£87.00 - £192.00
ATW Stewartby Lake Triathlon & Aquabike
Stewartby Lake, Green Ln, Bedford MK43 9LY
15 Jun 25
£72.08 - £127.20
The One for the Planet powered by Climategames
Windsor
15 Jun 25
£25.00 - £75.00
Swim Bike Run
Herne Bay, Kent
28 Jun 25
£20.00
Thorpe Park Sprint Triathlon
Chertsey, Surrey
29 Jun 25
£67.00 - £322.00
Dorney Evening Triathlon
Windsor, Buckinghamshire
02 Jul 25
£60.00 - £80.00
5.0
The FixAddiction Triathlon
Windsor, Buckinghamshire
05 Jul 25
£60.00
Conquer The Chilterns Triathlon
Henley-on-Thames, Oxfordshire
12 Jul 25
£68.00 - £108.00
Dorney Triathlon
Windsor, Berkshire
13 Jul 25
£60.00 - £101.00
4.6
The One on the River - Marlow
Marlow, Buckinghamshire
13 Jul 25
£25.00 - £110.00
5.0
Guildford Triathlon & Kids Aquathlon
Guildford, Surrey
20 Jul 25
£27.00 - £52.00
Bedford Team Triathlon Relays
Bedford
20 Jul 25
£183.00
TriBourne Festival of Endurance
Eastbourne, East Sussex
20 Jul 25
£46.00 - £399.00
Dorney Triathlon
Windsor, Berkshire
27 Jul 25
£60.00 - £122.00
4.6
Salty Sea Dog Duathlons & Triathlons - August
Bournemouth, Bournemouth, Christchurch and Poole
09 Aug 25
£45.00 - £70.00
4.6
London T100 Triathlon 2025
London
09 Aug 25 - 10 Aug 25
£128.00 - £420.00
Dorney Triathlon
Windsor, Berkshire
09 Aug 25
£60.00 - £101.00
4.6
Dorney Evening Triathlon
Windsor, Buckinghamshire
27 Aug 25
£60.00 - £80.00
5.0
Thorpe Park Sprint Triathlon
Chertsey, Surrey
31 Aug 25
£72.00 - £342.00
Brighton and Hove Triathlon
Hove, East Sussex
31 Aug 25
£21.00 - £169.00
5.0
The One on the Lake - Dorney
Windsor, Berkshire
07 Sep 25
£25.00 - £75.00
Tri Reigate Sprint Triathlon
Betchworth, Surrey
13 Sep 25
£82.00 - £362.00
Tri Reigate Standard Triathlon
Betchworth, Surrey
14 Sep 25
£92.00 - £407.00
ATW Big East & Maldon Triathlon
Promenade Park, Park Drive, Maldon, Essex, CM9 5JQ
21 Sep 25
£82.68 - £190.80
5.0
The One on the River - Henley
Henley-on-Thames, Oxfordshire
21 Sep 25
£25.00 - £110.00
Dorney Lake Triathlon
Windsor, Berkshire
21 Sep 25
£62.00 - £97.00
4.4
Dorney Triathlon
Windsor, Berkshire
27 Sep 25
£60.00 - £122.00
4.6
Hever Castle Triathlon & Multisport
Edenbridge, Kent
27 Sep 25 - 28 Sep 25
£35.00 - £245.00
Offer
10% OFF
Salty Sea Dog Duathlons & Triathlons - June
Bournemouth, Dorset
14 Jun 25
£45.00 - £70.00
4.6
Salty Sea Dog Duathlons & Triathlons - July
Bournemouth, Bournemouth, Christchurch and Poole
12 Jul 25
£45.00 - £70.00
4.6
Showing 1-40 of 40 results