Relay triathlons

• Sat 4 Apr
• £28-£51

Torbay Triathlon Relay

Join the action at Torbay Velopark in your choice of two thrilling team triathlon relays – fast racing, smooth tarmac, and unbeatable camaraderie in a fun, traffic-free setting for all abilities.

• Relay triathlon 2

• Sun 26 Apr
• £49.50-£64.50

Woking Spring Triathlon & Junior Aquathlon | Sprint Triathlon

A Sprint Triathlon combining a smooth pool swim, fast road cycling and scenic run routes, ideal for stepping up with racing and crowd support.

• 400 m pool swimming
• 20.6 km road cycling + 249 ft ascent
• 5 km trail running + 75 ft ascent

• Sun 26 Apr
• £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.

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

• Sat 2 May
• £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.

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

• Sun 3 May
• £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.

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

• Sat 9 May
• £250-£270

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.

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

• Sat 16 May
• £78-£178

ATW Big East & Maldon 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.

• Sprint triathlon
• Olympic triathlon
• Standard aquabike
• Half Ironman
• Middle aquabike

• Sat 16 May
• £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!

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

• Sun 17 May
• £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.

• Sprint triathlon
• Olympic triathlon
• Half Ironman

• Sat 23 May
• £125

ATW Box End Mixed Team Relay

Unleash your team’s speed and strategy in an exhilarating mixed relay, racing through swim–bike–run laps at Box End’s stunning, spectator-friendly lakeside venue.

• 350 m lake swimming
• 7.7 km road cycling + 102 ft ascent
• 1 km road running

• Sun 24 May
• £65-£137

ATW Box End Triathlon

Experience a choice of multi-sport events — triathlon, relay triathlon and aquabike — at a stunning watersports venue with pristine water, scenic routes, a custom medal and more.

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

• Sat 6 Jun
• £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.

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

• Sun 7 Jun
• £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.

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

• Sun 7 Jun
• £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!

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

• Sun 14 Jun
• £85.99-£449.99

Slateman Triathlon & Duathlon

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.

• Sprint triathlon
• Olympic triathlon
• Half Ironman
• Ironman
• Standard duathlon

• Sun 14 Jun
• £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.

• Half Ironman
• Olympic triathlon
• Sprint triathlon

• Sun 21 Jun
• £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.

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

• Sun 21 Jun
• £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.

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

• Sun 28 Jun
• £94.99-£141.99

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Race the North Wales coast in a spectacular multi-sport challenge, combining sea air, closed roads and iconic scenery in a fast, friendly triathlon and duathlon setting.

• Sprint triathlon
• Olympic triathlon
• Standard duathlon

• Sun 28 Jun
• £74-£94

ATW Sprint Triathlon | Mallory Park

Mallory Park Triathlon Extravaganza: A Traffic-Free Triumph! A thrilling and safe circuit nestled in picturesque surroundings, boasting its own self-enclosed swim lake for a Sprint Tri.

• 750 m lake swimming
• 20 km road cycling + 790 ft ascent
• 5 km road running + 80 ft ascent

• Sun 5 Jul
• £65-£160

ATW Odyssey At Box End Triathlon

Get ready for one of the UK’s most exciting triathlon events of the year! Dive into crystal-clear lake waters at Box End, then ride a smooth, rolling bike course and follow scenic on-site run paths.

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

• Sun 5 Jul
• £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.

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

• Sat 11 - Sun 12 Jul
• £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.

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

• Sun 12 Jul
• £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.

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

• 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

• Sat 18 Jul
• £265-£293
• 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

• 1.2 miles lake swimming
• 66 miles road cycling + 3550 ft ascent
• 14 miles trail running + 1512 ft ascent

• Sun 26 Jul
• £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.

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

• Sun 26 Jul
• £115.99-£141.99

Snowman 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
• £145-£285
• 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

• Ironman
• Half Ironman

• Sat 8 Aug
• £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.

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

• Sat 8 Aug
• £56-£285

ATW First To Full Triathlon Festival

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.

• Sprint triathlon
• Olympic triathlon
• Half Ironman
• Ironman
• Sprint aquabike
• + 4 more races

• 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

• Sun 16 Aug
• £76-£97

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.

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

• Sat 5 Sep
• £215-£260

THE ROC ENGLAND

Face up to the mountain in one of Europe's most inspiring locations. From Windermere to Coniston to summit England's highest mountain, if you love a tough and rewarding challenge - you'll thrive.

• 1.5 km lake swimming
• 92 km road cycling
• 18.5 km multi terrain running

• Sun 6 Sep
• £98.99-£259.99

Triathlon Y Bala

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.

• Sprint triathlon
• Olympic triathlon
• Half Ironman

• 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 13 Sep
• £73-£108

Aviemore Triathlon

Escape to the Cairngorms for an adventure triathlon in the scenic waters of Loch Morlich, then mountain biking and trail running in Glenmore Forest. Go Short Fast Durty or Long Hard Durty.

• Sprint triathlon
• Olympic triathlon

• Sun 13 Sep
• £49.50-£64.50

Woking Autumn Triathlon & Junior Aquathlon | Sprint Triathlon

Dive into clear waters, ride fast on quiet roads and run strong at a friendly, Sprint Triathlon challenge for all ages and abilities.

• 400 m pool swimming
• 20.6 km road cycling + 249 ft ascent
• 5 km trail running + 75 ft ascent

• Sun 20 Sep
• £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.

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

• 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
• £58-£120

Dorney Triathlon | September

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.

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

• 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

• Sun 27 Sep
• £76.99-£259.99

Superfeet Sandman Triathlon and Duathlon

An unforgettable adventure triathlon, The Sandman has been described as one of the most beautiful and thrilling multi-terrain races in the UK, offering a unique experience for athletes of all levels.

• Sprint triathlon
• Olympic triathlon
• Half Ironman
• Sprint duathlon

• Sat 3 Oct
• £215-£260

THE ROC SCOTLAND

THE ROC takes in the Highlands. Kinlochleven to the summit of Ben Nevis and back, including a Loch swim, stunning mountain/gravel bike sections and the UK's highest mountain!

• 1 km lake swimming
• 52 km mountain biking
• 18 km multi terrain running