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UK Triathlon Events Found

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Triathlons

Triathlons combine swimming, cycling and running into one of the most popular all-round physical challenges. There are a huge variety of types of triathlons to choose from in terms of distances, cycle and run terrain options, and whether the swim is in a pool, in open water (eg lake) or even the sea.

Triathlon distances:
Super Sprint Triathlons: 400m swim; 10km bike; 2.5km run.
Sprint Triathlons: 750m swim; 20km bike; 5km run.
Olympic Triathlons (aka Standard Triathlons): 1500m swim; 40km bike; 10km run.
Half Ironman Triathlons: 1.9km swim; 90km bike; 21.1km run. (This distance is also known as a “70.3” which refers to the total race distance in miles.)
Ironman™ Triathlons: 3.86km (2.4 mile) swim; 180.25km (112 mile) bike; 42.2km (26.2 mile) run. As Ironman™ is a trademark, these are also known as ‘Iron distance’ events.

Find a Race lists more than 450 triathlons every year. So whether you’re new to the sport and looking for your first Super Sprint triathlon or a hardened triathlete looking for a Double Ironman distance event, check out our comprehensive full 2024 - 2025 triathlon list below, or if you know which distance you want to search for use the links above.

Triathlons

🚀Boosted

Storm The Castle Duathlon

Ludlow, Shropshire
18 May 25
£45.00 - £65.00

Dorney Evening Triathlon

Windsor, Buckinghamshire
02 Jul 25
£60.00 - £80.00
5.0

ATW Odyssey Triathlon

Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB
05 Jul 25
£137.80 - £286.20

The FixAddiction Triathlon

Windsor, Buckinghamshire
05 Jul 25
£60.00

ATW St Neots Triathlon - Race 2

Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB
06 Jul 25
£61.48 - £127.20

ATW Bristol Triathlon

Brunel Lock Rd, Cumberland Basin, Bristol,
06 Jul 25
£79.50 - £132.50

Conquer The Chilterns Triathlon

Henley-on-Thames, Oxfordshire
12 Jul 25
£68.00 - £108.00

Upton Tri + Duathlon

Worcester, Worcestershire
12 Jul 25
£50.00 - £85.00

Dorney Triathlon

Windsor, Berkshire
13 Jul 25
£60.00 - £101.00
4.6

Birmingham Triathlon 2025

Sutton Coldfield, West Midlands
19 Jul 25
£99.00 - £119.00

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
£45.00 - £396.00

Snowman Duathlon & Triathlon

Betws-y-Coed, Conwy Principal Area
03 Aug 25
£69.99 - £224.99

Dorney Triathlon

Windsor, Berkshire
09 Aug 25
£60.00 - £101.00
4.6

ATW St Neots Triathlon - Race3

Riverside Park, Regatta Meadow, St Neots, Cambridgeshire, PE19 7AB
10 Aug 25
£61.48 - £127.20

ATW Oundle Children’s Triathlon

Oundle School, Swimming Pool, Milton Road, Oundle, Northamptonshire, PE8 4AQ
17 Aug 25
£22.26 - £30.74

York Triathlon 2025

York
17 Aug 25
£89.00 - £99.00
4.9

ATW Oundle Triathlon

Oundle School Swimming Pool, Milton Road, Oundle, Northamptonshire, PE8 4AQ
17 Aug 25
£61.48 - £104.94
4.8

Dorney Evening Triathlon

Windsor, Buckinghamshire
27 Aug 25
£60.00 - £80.00
5.0

ROADFORD LAKE TRIATHLON AUTUMN

Roadford Lake, Broadwoodwidger, Lifton, PL16 0RL
31 Aug 25
£55.12 - £233.20

Brighton and Hove Triathlon

Hove, East Sussex
31 Aug 25
£20.00 - £160.00
5.0

Belvoir Castle Triathlon - Multi Sport Weekend

Grantham, Lincolnshire
31 Aug 25
£45.00 - £135.00
4.0

Shropshire Triathlon 2025

Ellesmere, Shropshire
31 Aug 25
£99.00 - £219.00

The One on the Lake - Dorney

Windsor, Berkshire
07 Sep 25
£25.00 - £75.00

Triathlon Y Bala

Bala, Gwynedd
07 Sep 25
£80.99 - £105.99

ATW Grafham Triathlon

Grafham Water Visitor Centre, Marlow Park, Grafham, Huntingdon, Cambs, PE28 0BH
13 Sep 25
£82.68 - £127.20
4.7

North West Triathlon 2025

Nantwich, Cheshire East
14 Sep 25
£89.00 - £99.00

Cheltenham Tri Festival

Cheltenham, Gloucestershire
14 Sep 25
£45.00 - £90.00

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

Dawlish Triathlon

Dawlish Warren
21 Sep 25
£47.70 - £59.36

Superfeet Sandman - Triathlon & Duathlon

Llanfairpwllgwyngyll, Gwynedd
21 Sep 25
£69.99 - £224.99

East Leake 'End of Season' Sprint Triathlon

Loughborough, Leicestershire
28 Sep 25
£30.00 - £54.00

Warwickshire Triathlon 2025

Stratford-upon-Avon, Warwickshire
28 Sep 25
£89.00 - £99.00
5.0

SALCOMBE BREWERY CO SPRINT TRIATHLON

North Sands, Salcombe TQ8 8LD
28 Sep 25
£69.19
3.8

Llandudno Triathlon & Duathlon

Llandudno, Gwynedd
04 Oct 25
£85.99 - £130.99

2025 Wilmslow Autumn Triathlon

Wilmslow, Cheshire East
05 Oct 25
£38.00 - £75.00

2025 Wilmslow Spring Triathlon

Wilmslow, Cheshire East
04 May 25
£37.99 - £75.00
5.0
Showing 41-79 of 79 results
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