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From our partners
Triathlons
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.
Saturday, 22 Jun 2024
Abersoch Triathlon 2024
Abersoch, Gwynedd
olympic, sprint
(3 reviews)
Sunday, 23 Jun 2024
Darwen Triathlon - June 2024
Darwen, Blackburn with Darwen
10k, 5k, sprint, olympic
Sunday, 30 Jun 2024
Thorpe Park Sprint Triathlon - June 2024
Chertsey, Surrey
sprint
Sunday, 30 Jun 2024
The Northumbrian
Hexham, Northumberland
ironman, half ironman
(1 reviews)
Sunday, 30 Jun 2024
English Riviera Triathlon
Paignton, Torbay
olympic, sprint, super sprint, short (0–2km), medium (2–5km)
(4 reviews)
Wednesday, 3 Jul 2024
RunThrough Dorney Evening Triathlon - July
Dorney, Buckinghamshire
sprint, super sprint
(1 reviews)
Sunday, 7 Jul 2024
Hitchin Triathlon
Hitchin, Hertfordshire
sprint, super sprint
(63 reviews)
Wednesday, 10 Jul 2024
SWMA Tri Series Race 3
Cromhall, South Gloucestershire
super sprint
(45 reviews)
Saturday, 13 Jul 2024
Conquer the Chilterns Triathlon
Henley-on-Thames, Buckinghamshire
sprint
Sunday, 14 Jul 2024
Run Dorney 5k, 10k and Half Marathon - July 2024
Windsor, Buckinghamshire
5k, 10k, half marathon, super sprint, sprint, olympic
(70 reviews)
Sunday, 14 Jul 2024
Dorney Lake Triathlon - July
Windsor, Buckinghamshire
sprint, olympic, super sprint
(18 reviews)
Sunday, 14 Jul 2024
Ironbourne
Eastbourne, East Sussex
5k, marathon, ironman, half ironman
(7 reviews)
Sunday, 21 Jul 2024
Compton Verney Sprint Triathlon
Compton Verney, Warwickshire
sprint
(5 reviews)
Sunday, 21 Jul 2024
On The Edge Middle Distance Triathlon
Compton Verney, Warwickshire
half ironman
(6 reviews)
Sunday, 21 Jul 2024
Guildford Triathlon and Kids Aquathlon 2024
Guildford, Surrey
sprint
(39 reviews)
Sunday, 21 Jul 2024
Bedford Triathlon Team Relays
Bedford, Bedford
super sprint
(3 reviews)
Wednesday, 7 Aug 2024
RunThrough Dorney Lake Evening Triathlon - August
Dorney, Buckinghamshire
sprint, super sprint
(2 reviews)
Wednesday, 14 Aug 2024
SWMA Tri Series Race 4
Cromhall, South Gloucestershire
sprint
(62 reviews)
Saturday, 31 Aug 2024
Endorphin Sport Belvoir Castle Multisport Weekend 2024
Grantham, Leicestershire
10k, 5k, half marathon, half ironman, olympic, sprint, super sprint
(142 reviews)
Sunday, 1 Sept 2024
Dorney Lake Triathlon - September
Windsor, Buckinghamshire
sprint, olympic, super sprint
(16 reviews)
Sunday, 1 Sept 2024
Brighton & Hove Triathlon
Hove, Brighton and Hove
super sprint, sprint
(6 reviews)
Wednesday, 11 Sept 2024
SWMA Tri Series Race 5
Cromhall, South Gloucestershire
sprint, super sprint
(21 reviews)
Sunday, 22 Sept 2024
Newport Sprint & Olympic Triathlon 2024
Newport, Newport
sprint, olympic, super sprint
(22 reviews)
Triathlons in the UK
The triathlon is a multi-sport event combining swimming, cycling and running. The length and duration of these events can vary greatly, ranging from just a few miles to 140 plus. In addition, conditions in competition can differ from event to event. The swim could be in an indoor pool or the sea, and cycling or running on flat coastal roads or rolling countryside hills.
The UK plays host to some of the best triathlon events in the world. Large scale events such as the ITU Worlds Triathlon Leeds and London Triathlon host athletes of all levels of experience with big crowds building a buzzing atmosphere.
What’s the best UK triathlon event for me?
On Let's Do This, you can refine your search for a triathlon by exploring different race distances.
The Super-Sprint distance (400m, 10k, 2.5k) and Sprint distance (750m, 20k, 5k) triathlons are great for beginners looking to explore multi-sport. These events can be attempted without much prior training. But if you want to be competitive you should practice your transitions as they can make a big difference to your time.
Olympic distance triathlons (1.5k, 40k, 10k) are the standard distance for international competition. To be competitive here, you’ll need to take your training seriously. If you can finish one of these in under 3 hours, kudos to you.
The final two distances are the Middle Distance / Half Ironman (1.9k, 90k, 21.1k) and the Full Distance / Ironman (3.8k, 180k, 42.2k). Finishing these events is an achievement in itself. If you have trained well for a Half Ironman you could be pushing for under 6 hours for men and 7 for women. For the full distance, anything under the 17hr cut off point is a solid accomplishment, but under 13 hours (men) and 14 hours (women) deserves serious respect.