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All EventsTriathlons

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.

56 events found
Abersoch Triathlon 2024
Booked 5 times this week

Saturday, 22 Jun 2024

Abersoch Triathlon 2024

Location

Abersoch, Gwynedd

Running

olympic, sprint

Star5

(3 reviews)

Ticket£5 – £140
Booking perksGreat atmosphereGreat sceneryFlat road
Heart
Darwen Triathlon - June 2024
Booked 3 times this week

Sunday, 23 Jun 2024

Darwen Triathlon - June 2024

Location

Darwen, Blackburn with Darwen

Running

10k, 5k, sprint, olympic

Ticket£22 – £65
Booking perksRoad
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Thorpe Park Sprint Triathlon - June 2024
Booked 5 times this week

Sunday, 30 Jun 2024

Thorpe Park Sprint Triathlon - June 2024

Location

Chertsey, Surrey

Running

sprint

Ticket£25 – £65
Booking perks
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The Northumbrian
Booked 1 time this week

Sunday, 30 Jun 2024

The Northumbrian

Location

Hexham, Northumberland

Running

ironman, half ironman

Star5

(1 reviews)

Ticket£175 – £340
Booking perksGreat atmosphere
Heart
English Riviera Triathlon
Booked 1 time this week

Sunday, 30 Jun 2024

English Riviera Triathlon

Location

Paignton, Torbay

Running

olympic, sprint, super sprint, short (0–2km), medium (2–5km)

Star4

(4 reviews)

Ticket£42 – £74
Booking perksGreat atmosphereGreat sceneryFlat road
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RunThrough Dorney Evening Triathlon - July

Wednesday, 3 Jul 2024

RunThrough Dorney Evening Triathlon - July

Location

Dorney, Buckinghamshire

Running

sprint, super sprint

Star5

(1 reviews)

Ticket£49 – £75
Booking perksGreat atmosphereFlat road
Heart
Hitchin Triathlon

Sunday, 7 Jul 2024

Hitchin Triathlon

Location

Hitchin, Hertfordshire

Running

sprint, super sprint

Star4.5

(63 reviews)

Ticket£22 – £53
Booking perksGreat atmosphereRoad
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SWMA Tri Series Race 3

Wednesday, 10 Jul 2024

SWMA Tri Series Race 3

Location

Cromhall, South Gloucestershire

Running

super sprint

Star4.5

(45 reviews)

Ticket£15 – £35
Booking perksGreat atmosphereGreat sceneryFlat road
Heart
Conquer the Chilterns Triathlon
Booked 2 times this week

Saturday, 13 Jul 2024

Conquer the Chilterns Triathlon

Location

Henley-on-Thames, Buckinghamshire

Running

sprint

Ticket£66 – £106
Booking perks
Heart
Upton Tri + & Duathlon

Saturday, 13 Jul 2024

Upton Tri + & Duathlon

Location

Worcester, Worcestershire

Running

10k

Ticket£54 – £96
Booking perks
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Run Dorney 5k, 10k and Half Marathon - July 2024

Sunday, 14 Jul 2024

Run Dorney 5k, 10k and Half Marathon - July 2024

Location

Windsor, Buckinghamshire

Running

5k, 10k, half marathon, super sprint, sprint, olympic

Star4.5

(70 reviews)

Ticket£23.33 – £32
Booking perksGreat atmosphereFlat road
Heart
Dorney Lake Triathlon - July

Sunday, 14 Jul 2024

Dorney Lake Triathlon - July

Location

Windsor, Buckinghamshire

Running

sprint, olympic, super sprint

Star4.5

(18 reviews)

Ticket£31.67 – £95
Booking perksGreat atmosphere
Heart
Ironbourne

Sunday, 14 Jul 2024

Ironbourne

Location

Eastbourne, East Sussex

Running

5k, marathon, ironman, half ironman

Star4

(7 reviews)

Ticket£42.50 – £360
Booking perksGreat atmosphereGreat scenery
Heart
Compton Verney Sprint Triathlon

Sunday, 21 Jul 2024

Compton Verney Sprint Triathlon

Location

Compton Verney, Warwickshire

Running

sprint

Star4

(5 reviews)

Ticket£23.34 – £70
Booking perksGreat atmosphereGreat scenery
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On The Edge Middle Distance Triathlon
Booked 3 times this week

Sunday, 21 Jul 2024

On The Edge Middle Distance Triathlon

Location

Compton Verney, Warwickshire

Running

half ironman

Star5

(6 reviews)

Ticket£55 – £165
Booking perksGreat atmosphereGreat scenery
Heart
Guildford Triathlon and Kids Aquathlon 2024
Booked 5 times this week

Sunday, 21 Jul 2024

Guildford Triathlon and Kids Aquathlon 2024

Location

Guildford, Surrey

Running

sprint

Star4.5

(39 reviews)

Ticket£25 – £62
Booking perksGreat atmosphereFlat road
Heart
Bedford Triathlon Team Relays

Sunday, 21 Jul 2024

Bedford Triathlon Team Relays

Location

Bedford, Bedford

Running

super sprint

Star4.5

(3 reviews)

Ticket£60
Booking perksGreat atmosphereFlat road
Heart
RunThrough Dorney Lake Evening Triathlon - August

Wednesday, 7 Aug 2024

RunThrough Dorney Lake Evening Triathlon - August

Location

Dorney, Buckinghamshire

Running

sprint, super sprint

Star3

(2 reviews)

Ticket£49 – £75
Booking perksFlat road
Heart
SWMA Tri Series Race 4

Wednesday, 14 Aug 2024

SWMA Tri Series Race 4

Location

Cromhall, South Gloucestershire

Running

sprint

Star4.5

(62 reviews)

Ticket£15 – £35
Booking perksGreat atmosphereGreat sceneryFlat trail
Heart
Endorphin Sport Belvoir Castle Multisport Weekend 2024
Booked 4 times this week

Saturday, 31 Aug 2024

Endorphin Sport Belvoir Castle Multisport Weekend 2024

Location

Grantham, Leicestershire

Running

10k, 5k, half marathon, half ironman, olympic, sprint, super sprint

Star4.5

(142 reviews)

Ticket£16 – £160
Booking perksGreat atmosphereGreat scenery
Heart
Dorney Lake Triathlon - September

Sunday, 1 Sept 2024

Dorney Lake Triathlon - September

Location

Windsor, Buckinghamshire

Running

sprint, olympic, super sprint

Star4.5

(16 reviews)

Ticket£31.67 – £95
Booking perksGreat atmosphere
Heart
Brighton & Hove Triathlon
Booked 2 times this week

Sunday, 1 Sept 2024

Brighton & Hove Triathlon

Location

Hove, Brighton and Hove

Running

super sprint, sprint

Star4.5

(6 reviews)

Ticket£25.50 – £93.50
Booking perksGreat atmosphereGreat scenery
Heart
SWMA Tri Series Race 5

Wednesday, 11 Sept 2024

SWMA Tri Series Race 5

Location

Cromhall, South Gloucestershire

Running

sprint, super sprint

Star4.5

(21 reviews)

Ticket£15 – £35
Booking perksGreat atmosphereGreat sceneryFlat trail
Heart
Newport Sprint & Olympic Triathlon 2024
Booked 2 times this week

Sunday, 22 Sept 2024

Newport Sprint & Olympic Triathlon 2024

Location

Newport, Newport

Running

sprint, olympic, super sprint

Star3.5

(22 reviews)

Ticket£45 – £65
Booking perksGreat atmosphereFlat road
Heart
Showing 25 - 48 of 72 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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