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Triathlon Events in United Kingdom 2025-2026
By far the most popular multidisciplinary sport, a triathlon combines swimming, cycling and running in sequence. There are five officially recognised distances and plenty more for the fun of it. Whether it’s your very first triathlon or your 50th, there are incredible events for all levels running up and down the whole country. Find hundreds of the best UK triathlon events on Let’s Do This, with races to book for every level. No matter which time of the year you’re looking to compete, discover triathlons near you today.
6
Blenheim Palace Triathlon 2025
Woodstock, GB
Fri 6th Jun 2025
4.7(167)
26
The Long Course Weekend – Wales
Tenby, GB
Thu 26th Jun 2025
16
Outlaw Half Nottingham Weekend 2025
Holme Pierrepont, GB
Fri 16th May 2025
5
Outlaw Half Holkham Weekend 2025
Wells-next-the-Sea, GB
Sat 5th Jul 2025
30
East Leake Pool Sprint Triathlon 2025
East Leake, GB
Sun 30th Mar 2025
4.8(275)
17
Radley Triathlon 2025
Abingdon, GB
Thu 17th Apr 2025
4.5(44)
4
Winchester Triathlon 2025
Winchester, GB
Sun 4th May 2025
4.4(40)
24
Swansea Triathlon 2025
Swansea, GB
Sat 24th May 2025
14
Royal Windsor Triathlon - June 2025
Windsor, GB
Sat 14th Jun 2025
19
The Felixstowe Triathlon
Felixstowe, GB
Sat 19th Jul 2025
4.7(30)
25
Outlaw Nottingham Weekend 2025
Holme Pierrepont, GB
Fri 25th Jul 2025
23
Roade Sprint Triathlon
Roade, GB
Sun 23rd Mar 2025
4.4(61)
26
The First Tri 2025
Lydney, GB
Sat 26th Apr 2025
3
2025 Wilmslow Spring Triathlon
Wilmslow, GB
Sat 3rd May 2025
4.5(132)
4
2025 - Tonbridge Triathlon
Tonbridge, GB
Sun 4th May 2025
4.2
9
THE ROC Wales 2025
Abersoch, GB
Fri 9th May 2025
9
The All Nations Triathlon
Dorney, GB
Fri 9th May 2025
4.7(22)
13
SWMA Tri Series Race 1
Wotton-under-Edge, GB
Tue 13th May 2025
4.6(38)
24
Marlow Classic Triathlon (Sprint, Olympic & Middle Distance)
Marlow, GB
Sat 24th May 2025
24
Dorney Triathlon - May 2025
Dorney, GB
Sat 24th May 2025
27
Dorney Evening Triathlon - May 2025
Dorney, GB
Tue 27th May 2025
31
Uppingham Pool Sprint Triathlon and Children's Aquathlon 2025
Uppingham, GB
Sat 31st May 2025
4.7(51)
7
Eastbourne Triathlon
Eastbourne, GB
Sat 7th Jun 2025
4.6(7)
10
SWMA Tri Series Race 2
Cromhall, GB
Tue 10th Jun 2025
4.7(21)
14
The Wales Triathlon
Fishguard, GB
Sat 14th Jun 2025
5.0
14
Fishguard Triathlon
Fishguard, GB
Sat 14th Jun 2025
20
ABERSOCH Triathlon 2025
Abersoch, GB
Fri 20th Jun 2025
21
Darwen Tri /Aquathlon/5k/10k - June 2025
Darwen, GB
Sat 21st Jun 2025
4.6(13)
21
SWMA Wild Boar 70.3 & Olympic Triathlon 2025
Wotton-under-Edge, GB
Sat 21st Jun 2025
1
Dorney Evening Triathlon - July 2025
Dorney, GB
Tue 1st Jul 2025
4
FixAddiction Triathlon
Windsor, GB
Fri 4th Jul 2025
3.8(10)
8
SWMA Tri Series Race 3
Cromhall, GB
Tue 8th Jul 2025
4.5(48)
11
2025 Upton Triathlon
Worcester, GB
Fri 11th Jul 2025
11
Conquer the Chilterns Triathlon
Henley-on-Thames, GB
Fri 11th Jul 2025
19
Bedford Triathlon Team Relays
Bedford, GB
Sat 19th Jul 2025
19
Guildford Sprint Triathlon and Kids Aquathlon 2025
Guildford, GB
Sat 19th Jul 2025
8
Dorney Triathlon - August 2025
Windsor, GB
Fri 8th Aug 2025
12
SWMA Tri Series Race 4
Wotton-under-Edge, GB
Tue 12th Aug 2025
5.0
26
Dorney Lake Evening Triathlon - August 2025
Dorney, GB
Tue 26th Aug 2025
28
The Long Course Weekend - Yorkshire
Masham, GB
Thu 28th Aug 2025
29
Endorphin Sport Belvoir Castle Multisport Weekend 2025
Grantham, GB
Fri 29th Aug 2025
4.3(173)
30
Thorpe Park Sprint Triathlon August 2025
Chertsey, GB
Sat 30th Aug 2025
30
Brighton & Hove Triathlon
Hove, GB
Sat 30th Aug 2025
4.6(8)
9
SWMA Tri Series Race 5
Wotton-under-Edge, GB
Tue 9th Sep 2025
18
Saundersfoot Triathlon
Saundersfoot, GB
Thu 18th Sep 2025
20
Eton Dorney Triathlons - September
Windsor, GB
Sat 20th Sep 2025
4.7(123)
27
East Leake 'End of Season' Sprint Triathlon 2025 (Pool Based)
East Leake, GB
Sat 27th Sep 2025
27
Salcombe Brewery Co Sprint Triathlon
Salcombe, GB
Sat 27th Sep 2025
3.9(14)
