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
- £99-£120
Dorney Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the 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
- £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
- £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
- £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
- £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
- £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
- Sat 6 Jun
- £99-£120
Dorney Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the 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 7 Jun
- £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
- £75
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
- £114.99-£141.99
Slateman Triathlon & Duathlon | Standard Triathlon
The most iconic multi-sport adventure race in Wales, combining a lake swim, brutal mountain climbs and a demanding run through Snowdonia’s dramatic, awe-inspiring landscape over Standard distance.
- 1500 m lake swimming
- 49.9 km road cycling + 2765 ft ascent
- 11.7 km trail running + 1276 ft ascent
- Sun 14 Jun
- £90-£110
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
- £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
- £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 28 Jun
- £114.99-£141.99
Wild Horse Brewing Co. Llandudno Triathlon & Duathlon | Standard Triathlon
Step up the challenge with a Standard Distance sea swim, rolling closed-road coastal bike leg and flat, fast run — a rewarding test in a stunning Welsh seaside setting.
- 1500 m sea swimming
- 34.75 km road cycling + 701 m ascent
- 9.4 km road running
- Sun 5 Jul
- £96-£117
ATW Odyssey At Box End Triathlon | Standard Distance Triathlon
Get ready for one of the UK’s most exciting Standard triathlons of the year! Dive into crystal-clear lake waters, then ride a smooth, rolling bike course and follow scenic on-site run paths.
- 1500 m lake swimming
- 38 km road cycling + 610 ft ascent
- 10 km road running + 174 ft ascent
- Sun 5 Jul
- £75
English Riviera Triathlon | Standard
A fast, exciting, spectator-friendly, non-draft Standard Triathlon in 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
- £95-£115
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 12 Jul
- £99-£120
Dorney Triathlon | July | Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- 1500 m lake swimming
- 38 km road cycling
- 10 km road running
- Sun 12 Jul
- £85-£100
Ripon Triathlon Festival | Standard Triathlon
One of the most popular distances within the sport of triathlon, catering to both amateur and professional athletes, striking a balance between speed and endurance.
- 1500 m lake swimming
- 40 km road cycling + 183 m ascent
- 10 km road running + 21 m ascent
- Sun 26 Jul
- £99-£120
Dorney Triathlon | July | Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- 1500 m lake swimming
- 38 km road cycling
- 10 km road running
- Sun 26 Jul
- £115.99-£141.99
Snowman Triathlon, Duathlon and Swims | Standard Triathlon
A legendary mountain triathlon in Snowdonia: cold-water swim, brutal climbs, tough trail run and iconic views — a true test for determined, adventure-hungry athletes.
- 1500 m lake swimming
- 69.3 km road cycling + 3753 ft ascent
- 8.7 km multi terrain running + 2276 ft ascent
- Sat 8 Aug
- £99-£120
Dorney Triathlon | August | Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- 1500 km lake swimming
- 38 km road cycling
- 10 km road running
- Sat 8 Aug
- £96-£117
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
- Sat 8 Aug
- £96-£117
ATW First To Full Triathlon Festival | Standard Distance Triathlon
Be part of a UK first. This isn’t just another Standard 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
- Sun 30 Aug
- £76
Wimbleball Standard Triathlon
A superb triathlon venue which hosted Ironman 70.3 for ten years! Experience dramatic hills, pristine open water and wild Exmoor scenery in a tough, rewarding Standard Triathlon.
- 1500 m lake swimming
- 46 km road cycling + 2729 ft ascent
- 10 km road running + 754 ft ascent
- Sun 6 Sep
- £95-£120
Helvellyn Triathlon
Take on one of the UK’s toughest triathlons – a legendary Lake District challenge where brutal climbs, wild beauty and sheer determination define every mile.
- 1.5 km lake swimming
- 59 km road cycling + 990 m ascent
- 15 km fell running + 931 m ascent
- Sun 6 Sep
- £114.99-£141.99
Triathlon Y Bala | Standard Triathlon
Start with a water swim in beautiful Llyn Tegid against a mountain backdrop, then push through scenic bike and run routes on fully closed roads around Bala, North Wales, in this Standard Triathlon.
- 1500 km lake swimming
- 37 km road cycling + 1181 ft ascent
- 10 km road running + 255 ft ascent
- Sat 12 Sep
- £65-£80
Sundowner Olympic Triathlon
The Sundowner Olympic Triathlon is back! Race as the sun sets in an unforgettable triathlon event at Allerthorpe Lakeland Park in Yorkshire which is now back on the race calendar.
- 1500 km lake swimming
- 40 km road cycling + 146 ft ascent
- 10 km trail running
- Sun 13 Sep
- £93-£108
Aviemore Triathlon | Long Hard Durty
Join the Aviemore Triathlon in the beautiful Cairgorms and enjoy an open water swim in the cool, calm waters of Loch Morlich and enjoy mountain biking and running on the trails of Glenmore Forest.
- 1000 m lake swimming
- 18 km mountain biking
- 9 km trail running
- Sun 20 Sep
- £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
- £96-£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
- Sat 26 Sep
- £97-£118
ATW Grafham Triathlon | Standard Triathlon
Athletes of all levels are guaranteed to enjoy The Standard Triathlon at this fantastic venue that has been used for award-winning triathlons, national championships and GB qualifier races!
- 1500 m lake swimming
- 38 km road cycling + 748 ft ascent
- 10 km road running
- Sat 26 Sep
- £99-£120
Dorney Triathlon | September | Standard Triathlon
Take on this Standard Triathlon and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.
- 1500 m lake swimming
- 38 km road cycling
- 10 km road running
Olympic triathlons near you
Select your location for standard distance triathlons in your area.