Relay triathlons in UK

• Sun 26 Apr 2026
• £55

Tridents Grantham Triathlon

A classic sprint triathlon with a fresh new energy to bring the triathlon scene back to Lincolnshire! A pool swim with a thrilling and scenic course plus a commemorative medal.

• Newcomers
• Enter online
• Event village
• Rural
• Sustainability policy
• Age 17 & over

• 400 m pool swimming
• 24 km road cycling + 230 ft ascent
• 5 km road running + 62 ft ascent

• Sat 2 May 2026
• £58-£120

Dorney Triathlon | May

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
• Park
• Sustainability policy
• Age 15 & over

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

• Sun 3 May 2026
• £55-£117

ATW St Neots Triathlon | Race 1

Stunning riverside venue! Swim in the beautiful River Ouse, cycle through scenic villages and run around Riverside Park in a triathlon or aquabike event of your choice.

• Newcomers
• Event village
• Park
• Age 15 & over

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

• Sat 9 May 2026
• £90-£250

THE ROC WALES

The totally unique ROC format, from Abersoch Bay to the top of Wales’ highest mountain and back. Swim, Bike, Mountain, Bike, Run; THE ROC WALES is triathlon - tough and redefined.

• Recycling
• Plastic bottle free
• Entertainment
• Music
• Chip timing
• Enter online
• Hilly
• Mountainous
• Event village
• Event expo
• Coast
• Mountains
• Sustainability policy
• Plastic-free event
• Age 18 & over

• 1.5 km sea swimming
• 100 km road cycling
• 13 km multi terrain running + 3330 ft ascent

• Sat 16 May 2026
• £42.50-£107.50

Keswick Mountain Festival | Sprint Triathlon

One of the most thrilling triathlons in the country on a super-exciting route with challenging ascents, descents and open roads, narrow in parts. Includes Full Weekend Festival Ticket in the price!

• Newcomers
• Chip timing
• Enter online
• Hilly
• Event village
• Age 15 & over

• 400 m lake swimming
• 18 km road cycling
• 5 km trail running

• Sun 17 May 2026
• £68-£135

Roadford Lake Triathlon

Triathlon and swim events at Roadford Lake, offering a range of distances to suit all ability levels in a safe environment, with camping options to enjoy the area after your event.

• Families
• Trees not tees
• Recycling
• Newcomers
• Event village
• Rural
• Sustainability policy
• Plastic-free event
• Age 15 & over

• Sprint triathlon
• Olympic triathlon
• Half Ironman

• Sun 24 May 2026
• £63-£135

ATW Box End Triathlon

A choice of multi-sports events including triathlon, relay triathlon and aquabike at a stunning watersports venue with immaculate water quality, scenic routes, a custom designed medal and much more.

• Newcomers
• Event village
• Park
• Age 15 & over

• Sprint triathlon
• Sprint aquabike
• Olympic triathlon
• Standard aquabike
• Half Ironman
• + 1 more race

• Sun 7 Jun 2026
• £155-£175

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

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

20% 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
• £62-£115

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

English Riviera Triathlon | Sprint

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.

• 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 18 - Sun 19 Jul 2026
• £28-£245
• 20% 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.

20% 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

• Sat 8 Aug 2026
• £130-£270
• 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
• £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.

• Enter online
• Age 17 & over

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

• Sun 20 Sep 2026
• £30-£97

Eton Dorney Triathlon & Swims

The Olympic venue, Eton Dorney, offers pan-flat, traffic-free roads and a beautiful clear lake for all levels of triathletes and swimmers to enjoy in an exclusive setting.

• Families
• Recycling
• Newcomers
• Dogs allowed at venue
• Event village
• Urban
• Park
• Rural
• Free venue entry
• Age 15 & over

• Super sprint triathlon
• Sprint triathlon
• Olympic triathlon
• Lake swim 4

• 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.

• Enter online
• Age 17 & over

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