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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.

68 events found
London Triathlon 2023
Booked 152 times this week

Saturday, Aug 5, 2023

LocationIndicator

London, Greater London

Participants

olympic, sprint, super sprint

FilledTicket£44 – £205
Booking perks
HeartOutline
Outlaw Half Bowood Weekend
Booked 59 times this week

Saturday, Sep 3, 2022

LocationIndicator

Derry Hill, Wiltshire

Participants

10k, half ironman

FilledTicket£10 – £225
Booking perksGreat sceneryFlat trail
HeartOutline
Belvoir Castle Triathlon
Booked 45 times this week

Sunday, Sep 4, 2022

LocationIndicator

Grantham, Leicestershire

Participants

olympic, sprint, super sprint

FilledTicket£16 – £130
Booking perksGreat scenery
HeartOutline
Blenheim Palace Triathlon 2023
Booked 50 times this week

Saturday, Jun 3, 2023

LocationIndicator

Woodstock, Oxfordshire

Participants

sprint, super sprint

FilledTicket£41.68 – £205
Booking perksGreat sceneryFlat trail
HeartOutline
Bala Standard Triathlon
Booked 14 times this week

Sunday, Sep 4, 2022

LocationIndicator

Bala, Gwynedd

Participants

olympic

FilledTicket£36.70 – £99
Booking perksGreat sceneryRoad
HeartOutline
Outlaw X Thoresby Park Weekend
Booked 28 times this week

Saturday, Sep 24, 2022

LocationIndicator

Newark, Nottinghamshire

Participants

10k, half ironman

Star4.5

(1 reviews)

FilledTicket£10 – £215
Booking perksGreat atmosphereGreat sceneryFlat trail
HeartOutline
East Leake 'End of Season' Triathlon
Booked 15 times this week

Sunday, Sep 25, 2022

LocationIndicator

East Leake, Nottinghamshire

Participants

sprint

FilledTicket£16.70 – £46
Booking perks
HeartOutline
Eton Dorney Triathlons - September
Booked 28 times this week

Sunday, Sep 25, 2022

LocationIndicator

Windsor

Participants

super sprint, sprint, olympic

Star4

(4 reviews)

FilledTicket£50 – £90
Booking perksGreat atmosphereFlat road
HeartOutline
Blithfield Sprint Triathlon & Aquabike
Booked 1 time this week

Sunday, Aug 21, 2022

LocationIndicator

Abbots Bromley, Staffordshire

Participants

super sprint

FilledTicket£56 – £75
Booking perksRoad
HeartOutline
Dorney Triathlon - August
Booked 3 times this week

Sunday, Aug 28, 2022

LocationIndicator

Windsor, Buckinghamshire

Participants

super sprint, sprint, olympic

Star4.5

(6 reviews)

FilledTicket£70 – £91
Booking perksGreat atmosphereGreat sceneryFlat road
HeartOutline
THE ROC Summer Championships

Saturday, Sep 3, 2022

LocationIndicator

Abersoch, Gwynedd

FilledTicket£200 – £215
Booking perksGreat sceneryHilly trail
HeartOutline
Stratford Park Triathlon
Booked 7 times this week

Sunday, Sep 4, 2022

LocationIndicator

Stroud, Gloucestershire

FilledTicket£50 – £55
Booking perksFlat road
HeartOutline
TRI Challenge Triathlon
Booked 5 times this week

Saturday, Sep 10, 2022

LocationIndicator

Windsor, Buckinghamshire

Participants

sprint

FilledTicket£30 – £60
Booking perksRoad
HeartOutline
Superfeet Sandman Triathlon & Duathlon

Saturday, Sep 10, 2022

LocationIndicator

Llanfairpwllgwyngyll, Isle of Anglesey

Participants

super sprint, sprint, half ironman, olympic

FilledTicket£70.99 – £184.99
Booking perksGreat scenery
HeartOutline
Autumn Waveney Super Sprint Triathlon
Booked 1 time this week

Sunday, Sep 11, 2022

LocationIndicator

Bungay, Suffolk

Participants

sprint

FilledTicket£42 – £47
Booking perksFlat road
HeartOutline
Roadford Lake Triathlon

Sunday, Sep 11, 2022

LocationIndicator

Broadwoodwidger, Devon

Participants

super sprint, sprint, olympic, medium (2–5km)

FilledTicket£45 – £156
Booking perks
HeartOutline
South Manchester Triathlon 2022
Booked 5 times this week

Sunday, Sep 11, 2022

LocationIndicator

Wilmslow, Cheshire East

Participants

5k, super sprint, sprint

FilledTicket£43.99 – £66
Booking perksFlat road
HeartOutline
Exmouth Openwater Sprint Triathlon
Booked 4 times this week

Sunday, Sep 11, 2022

LocationIndicator

Exmouth, Devon

Participants

sprint, olympic

Star5

(4 reviews)

FilledTicket£50 – £75
Booking perksGreat atmosphereFlat
HeartOutline
Cromhall Evening Tri Series - September
Booked 4 times this week

Wednesday, Sep 14, 2022

LocationIndicator

Cromhall, South Gloucestershire

Participants

sprint, super sprint

FilledTicket£20 – £45
Booking perksFlat trail
HeartOutline
Brighton & Hove Triathlon
Booked 3 times this week

Saturday, Sep 17, 2022

LocationIndicator

Hove, Brighton and Hove

Participants

super sprint, sprint

FilledTicket£20 – £156
Booking perksGreat scenery
HeartOutline
31st Derby Triathlon
Booked 4 times this week

Sunday, Sep 18, 2022

LocationIndicator

Etwall, Derbyshire

Participants

super sprint

FilledTicket£22.50 – £56
Booking perksRoad
HeartOutline
Sandbanks Sprint Triathlon - June
Booked 1 time this week

Sunday, Sep 18, 2022

LocationIndicator

Poole, Dorset

Participants

sprint

FilledTicket£65 – £85
Booking perksFlat road
HeartOutline
Newport Sprint & Olympic Triathlon
Booked 11 times this week

Sunday, Sep 18, 2022

LocationIndicator

Newport, Newport

Participants

super sprint, sprint, olympic

FilledTicket£35 – £70
Booking perksFlat road
HeartOutline
Triathlon Llandudno

Sunday, Sep 25, 2022

LocationIndicator

Llandudno, Conwy Principal Area

Participants

super sprint

FilledTicket£89.99 – £100.99
Booking perks
HeartOutline
Showing 1 - 24 of 68 events

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.

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