Olympic triathlons in the UK
An Olympic or standard distance triathlon involves a 1.5km swim, a 40km bike ride and a 10km run. Short enough for confident beginners but long enough to be a real endurance challenge, Olympic triathlons have a lot to offer - and as the most popular type of triathlon in the UK, there are plenty of events to choose from. Select your location for Olympic triathlons in your area or scroll down to see events coming up.
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Map viewOlympic and standard distance triathlons in 2025/2026
Featured events are listed below - select a month/region or the map view to see all events.
- Sat 2 May 2026
- £99-£120
Dorney Standard Triathlon
Take on this multi-activity event and take the opportunity to race around this unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- 1500 m lake swimming
- 40 km road cycling
- 10 km road running
- Sun 3 May 2026
- £58-£63
Tavistock Triathlon | Standard
Tavistock Triathlon is for all ages and abilities using the amazing Olympic legacy 50m pool at Mount Kelly with quiet rolling roads for the bike and the disused railway line for the run. What a venue!
- 800 m pool swimming
- 36 km road cycling + 1726 ft ascent
- 10 km road running + 652 ft ascent
- Sun 3 May 2026
- £96-£117
ATW St Neots Standard Triathlon | Race 1
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a Standard Distance Triathlon.
- 1500 m river swimming
- 45 km road cycling + 771 ft ascent
- 10 km road running
- Sat 16 May 2026
- £97-£120
ATW Big East & Maldon Standard Triathlon
The Big East and Maldon Triathlon is brought to you by the largest triathlon organiser in the UK! A great experience featuring a tidal river swim.
- 1500 m river swimming
- 40 km road cycling + 479 ft ascent
- 10 km trail running + 86 ft ascent
- Sun 17 May 2026
- £82-£84
Roadford Lake Triathlon | Standard
This triathlon returns for another successful year! It’s a superb swimming venue with quiet rolling roads for the bike course and a cracking run too. Plus there's lakeside camping available too.
- 1500 m lake swimming
- 46 km road cycling + 4245 ft ascent
- 10 km road running + 1644 ft ascent
- Sun 24 May 2026
- £96-£117
ATW Box End Standard Triathlon
Challenge yourself in the Standard Distance Triathlon at Box End Lake — a superb race combining pristine open water, fast scenic routes, and an unbeatable atmosphere for all abilities.
- 1500 m lake swimming
- 40 km road cycling + 837 ft ascent
- 10 km road running + 170 ft ascent
- Sun 24 May 2026
- £100-£125
Lough Cutra Castle | Olympic Triathlon
Race through the beautiful grounds and surrounding area of stunning South Galway in a triathlon for a range of levels then celebrate with friends and family in the festival village.
- 1.5 km lake swimming
- 40 km road cycling
- 10 km road running
- Sun 7 Jun 2026
- €100-€125
Chateau de Chantilly | Olympic Triathlon
Race through the beautiful grounds and surrounding area of the stunning Château de Chantilly in an Olympic Triathlon then celebrate with friends and family in the festival village.
- 1.5 km lake swimming
- 40 km road cycling + 414 ft ascent
- 10.5 km road running
- Sun 7 Jun 2026
- £85
Dartmouth Triathlon | Standard
Swim in the clear waters of Blackpool Sands, then take a scenic coastal bike route featuring Devon's flattest road, then run by a stream. Plus chance to camp on the beach!
- 1500 m sea swimming
- 40 km road cycling + 2134 ft ascent
- 10 km road running + 456 ft ascent
- Sun 14 Jun 2026
- £65
Plymouth Standard Triathlon
Dive into the Plymouth Standard Triathlon! A stunning sea swim, scenic coastal bike ride, and flat waterfront run offering an unforgettable multisport challenge for athletes of all abilities.
- 1500 m sea swimming
- 40 km road cycling + 2593 ft ascent
- 10 km trail running + 810 ft ascent
- Sun 14 Jun 2026
- £80
Weymouth WMD Triathlon | Weymouth WMD Classic Triathlon
The Classic Triathlon will not fail to impress. With stunning views of Weymouth nature reserve and a true test of stamina, you'll be beaming with pride at the finish line.
- 1500 m sea swimming
- 40 km road cycling + 1040 ft ascent
- 10 km multi terrain running + 132 ft ascent
- Sun 21 Jun 2026
- £90
Southend Triathlon | Standard Triathlon
Take on an exciting coastal Standard Triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.
- 1500 m sea swimming
- 40 km road cycling
- 10 km road running
- Sun 21 Jun 2026
- £96-£117
ATW Stewartby Lake Standard Triathlon
Dive into the ATW Stewartby Lake Standard Triathlon – a flat, fast and friendly race offering stunning lake views, smooth roads, and PB potential.
- 1500 m lake swimming
- 37 km road cycling + 316 ft ascent
- 10 km road running + 104 ft ascent
- Sun 21 Jun 2026
- £100-£125
Cholmondeley Castle | Olympic Triathlon
Get active in the beautiful grounds and surrounding area of stunning Cheshire in the discipline of your choice! Bring your friends and celebrate completing your challenge in the festival village.
- 1.5 km lake swimming
- 42 km road cycling
- 10.5 km road running
- Sun 5 Jul 2026
- £96-£117
ATW Odyssey At Box End Triathlon | Standard Distance Triathlon
Get ready for one of the UK’s most exciting triathlon events of the year!
- 1500 m lake swimming
- 38 km road cycling + 610 ft ascent
- 10 km road running + 174 ft ascent
- Sun 5 Jul 2026
- £65
English Riviera Triathlon | Standard
Fast, exciting, spectator-friendly racing in the centre of Torquay! Swim from the sheltered Torre Abbey Sands beach, ride a fast and flattish closed-road circuit and run by the sea.
- 1500 m sea swimming
- 40 km road cycling + 1312 ft ascent
- 10 km road running + 250 ft ascent
- Sun 12 Jul 2026
- £85-£105
ATW Bristol Standard Triathlon
Swim, bike, and run through an iconic city backdrop with a flat, fast course and incredible atmosphere — one of the UK's most-popular 'closed-road' Standard triathlons.
- 1500 m lake swimming
- 42 km road cycling + 144 ft ascent
- 10 km road running + 174 ft ascent
- Sun 19 Jul 2026
- £100-£125
Belvoir Castle | Olympic Triathlon
A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in an Olympic Triathlon! Celebrate in the festival village afterwards.
- 1.5 km lake swimming
- 45 km road cycling + 957 ft ascent
- 10.5 km road running + 615 ft ascent
- Sat 8 Aug 2026
- £94-£115
ATW St Neots Standard Triathlon | Race 2
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a Standard Triathlon.
- 1500 m river swimming
- 45 km road cycling + 712 ft ascent
- 10 km road running + 0 ft ascent
- Sat 8 Aug 2026
- £96
ATW First To Full Triathlon Festival | Standard Distance Triathlon
Be part of a UK first. This isn’t just another triathlon—it’s the first event of its kind where you decide the distance, from sprint to full, and race your way.
- 1500 m river swimming
- 45 km road cycling + 712 ft ascent
- 10 km road running + 0 ft ascent
- Sun 20 Sep 2026
- £82-£97
Eton Dorney Standard Triathlon
The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for Standard-distance triathletes to enjoy in an exclusive setting.
- 1.5 km lake swimming
- 40 km road cycling + 80 m ascent
- 10 km trail running + 14 m ascent
- Sun 20 Sep 2026
- £94-£115
ATW St Neots Standard Triathlon | Race 3
Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a Standard Triathlon.
- 1500 m river swimming
- 45 km road cycling + 712 ft ascent
- 10 km road running + 0 ft ascent
Olympic triathlons near you
Select your location for standard distance triathlons in your area.