Relay triathlons in Summer

• Sat 6 Jun 2026
• £58-£120

Dorney Triathlon | June

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Recycling
• Newcomers
• Event village
• Sustainability policy
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 7 Jun 2026
• £160-£180

ATW Grafman Middle Distance Triathlon

Take on a superb middle distance triathlon at the fantastic Grafham Water. Suitable for all abilites, with a challenging, but achievable course, and custom medal at the finish line.

• Chip timing
• Enter online
• Undulating
• Age 18 & over

• 1900 m lake swimming
• 90 km road cycling + 1680 ft ascent
• 21 km multi terrain running + 0 ft ascent

• Sun 7 Jun 2026
• £70-£90

Dartmouth Triathlon | Sprint

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!

• Chip timing
• Enter online
• Age 15 & over

• 750 m sea swimming
• 20 km road cycling + 1067 ft ascent
• 5 km road running + 228 ft ascent

• Sun 14 Jun 2026
• £80-£195

Weymouth WMD Triathlon

Whichever distance you choose, this 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.

• Newcomers
• Event village
• Coast
• Age 18 & over

• Half Ironman
• Olympic triathlon
• Sprint triathlon

• Sat 20 - Sun 21 Jun 2026
• £28-£245
• 35% off

Cholmondeley Castle Triathlon and Multisport Festival

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.

Black Friday 35% off

• Families
• Newcomers
• Entertainment
• Music
• Event village
• Park
• Rural
• Age 9 & over

• Kids triathlon 5
• Novice triathlon
• Super sprint triathlon
• Sprint triathlon 2
• Olympic triathlon
• + 14 more races

• Sun 21 Jun 2026
• £64-£117

ATW Stewartby Lake Triathlon & Aquabike

Dive into the ATW Stewartby Lake Triathlon and Aquabike – a flat, fast and friendly race offering stunning lake views, smooth roads, and surefire PB potential.

• Recycling
• Newcomers
• Plastic bottle free
• Event village
• Park
• Sustainability policy
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sun 21 Jun 2026
• £75-£110

Southend Triathlon

Take on an exciting coastal triathlon in Southend, featuring a sea swim, fast seafront cycle, and scenic run with fantastic crowd support all the way.

• Newcomers
• Event village
• Coast
• Age 18 & over

• Sprint triathlon
• Olympic triathlon
• Relay triathlon
• Standard aquabike

• Sun 5 Jul 2026
• £64-£70

English Riviera Triathlon | Sprint

A fast, exciting, spectator-friendly, draft-legal Sprint Triathlon in Torquay! Swim from the sheltered Torre Abbey Sands beach, ride a fast and flattish closed-road circuit and run by the sea.

• Chip timing
• Enter online
• Undulating
• Age 15 & over

• 750 m sea swimming
• 20 km road cycling + 656 ft ascent
• 5 km road running + 135 ft ascent

• Sat 11 - Sun 12 Jul 2026
• £20-£100

Ripon Triathlon Festival

A family-friendly event in partnership with the Brownlee Foundation, for triathletes of all skill levels including a Sprint, Standard, Middle distance tri, Swims, Aquabike, Relay and Juniors.

• Families
• Newcomers
• Dogs allowed at venue
• Entertainment
• Event village
• Urban
• Rural
• Free venue entry
• Age 8 & over

• Lake swim 2
• Sprint triathlon
• Sprint aquabike
• Standard aquabike
• Olympic triathlon
• + 5 more races

• Sun 12 Jul 2026
• £58-£120

Dorney Triathlon | July

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Recycling
• Newcomers
• Event village
• Sustainability policy
• Public transport links
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• 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.

• Chip timing
• Enter online
• Traffic free
• Age 17 & over

• 1500 m lake swimming
• 42 km road cycling + 144 ft ascent
• 10 km road running + 174 ft ascent

• Sat 18 - Sun 19 Jul 2026
• £28-£245
• 35% off

Belvoir Castle Triathlon and Multisport Festival

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in the discipline of your choice! Celebrate in the festival village afterwards.

Black Friday 35% off

• Families
• Newcomers
• Event village
• Rural
• Age 9 & over

• Kids triathlon 4
• Super sprint triathlon
• Sprint triathlon 2
• Olympic triathlon
• Half Ironman
• + 14 more races

• Sat 18 Jul 2026
• £260-£290
• Early bird

Castle To Coast Triathlon

A one-of-a-kind triathlon adventure from castle to coast – swim, bike, run and soak up the best of the North and South Downs, fully supported all the way, no navigation needed!

Early bird on now

• Newcomers
• Chip timing
• Enter online
• Event village
• Rural
• Age 18 & over

• 1.2 miles lake swimming
• 66 miles road cycling + 3300 ft ascent
• 14 miles trail running + 1300 ft ascent

• Sun 26 Jul 2026
• £58-£120

Dorney Triathlon | July

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Recycling
• Newcomers
• Event village
• Sustainability policy
• Public transport links
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sat 8 Aug 2026
• £140-£275
• Early bird

ATW Odyssey Triathlon

Complete your own Odyssey on a journey of self-discovery in the Cambridgeshire countryside featuring a swim in the River Ouse, a scenic ride and a run around the beautiful town of St Neots.

Early bird on now

• Families
• Recycling
• Entertainment
• Music
• Event village
• Park
• Rural
• Sustainability policy
• Age 19 & over

• Ironman
• Half Ironman

• Sat 8 Aug 2026
• £58-£120

Dorney Triathlon | August

Take on this multi-activity event as an individual or as a relay, and enjoy the opportunity to race around the unique and inspiring Olympic venue! Great water quality and flat, scenic grounds.

• Recycling
• Newcomers
• Event village
• Sustainability policy
• Public transport links
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Sprint aquabike
• Standard aquabike

• Sat 8 Aug 2026
• £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.

• Enter online
• Age 17 & over

• 1500 m river swimming
• 45 km road cycling + 712 ft ascent
• 10 km road running + 0 ft ascent

• Sun 16 Aug 2026
• £74-£95

ATW Oundle Sprint Distance Triathlon

The UK's largest triathlon organiser brings you the Oundle Sprint Triathlon! It doesn’t matter if you are an experienced triathlete or this is your very first attempt at swim-bike-run.

• Chip timing
• Enter online
• Age 15 & over

• 600 m pool swimming
• 25 km road cycling + 561 ft ascent
• 5 km trail running + 30 ft ascent