Half Ironman (middle distance) in Summer

• Sun 7 Jun 2026
• £196-£245

Chateau de Chantilly | Gauntlet Triathlon

Race through the beautiful grounds and surrounding area of the stunning Château de Chantilly in the Gauntlet Half Iron Triathlon then celebrate with friends and family in the festival village.

• Chip timing
• Enter online
• Age 18 & over

• 1.9 km lake swimming
• 90 km road cycling + 1708 ft ascent
• 21 km road running

• 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 14 Jun 2026
• £155-£195

Weymouth WMD Triathlon | Weymouth Middle Distance Triathlon

The Middle Distance 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.

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

• 1900 m sea swimming
• 90 km road cycling + 2501 ft ascent
• 21 km multi terrain running + 259 ft ascent

• Sun 14 Jun 2026
• £130

Plymouth Middle Distance Triathlon

Dive into the Plymouth Middle Distance Triathlon! A stunning sea swim, scenic coastal bike ride, and flat waterfront run offering an unforgettable multisport challenge for athletes of all abilities.

• Chip timing
• Enter online
• Age 18 & over

• 1900 m sea swimming
• 90 km road cycling + 4545 ft ascent
• 20 km trail running + 1620 ft ascent

• Sun 21 Jun 2026
• £196-£245

Cholmondeley Castle | Gauntlet Triathlon

Get active in the beautiful grounds and surrounding area of stunning Cheshire in the epic Gauntlet! Bring your friends and celebrate completing your challenge in the festival village.

• Chip timing
• Enter online
• Age 18 & over

• 1.9 km lake swimming
• 84 km road cycling
• 21 km road running

• 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 19 Jul 2026
• £196-£245

Belvoir Castle | Gauntlet Triathlon

A jewel in the castle crown! Get active in the beautiful grounds and surrounding area of stunning Leicestershire in the epic Gauntlet Triathlon! Celebrate in the festival village afterwards.

• Chip timing
• Enter online
• Age 18 & over

• 1.9 km lake swimming
• 90 km road cycling + 957 ft ascent
• 21 km road running

• Sat 8 Aug 2026
• £140-£160

ATW Odyssey Half Distance 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.

• Enter online
• Undulating
• Age 19 & over

• 1900 m river swimming
• 90 km road cycling + 1680 ft ascent
• 21.1 km road running

• Sat 22 Aug 2026
• £250

THE RESTLESS Gravel XTRI

Take on a wild Scottish adventure combining a cold-water loch swim, epic gravel ride and tough mountain run through the breathtaking landscape of the Arrochar Alps.

• Chip timing
• Enter online
• GPS tracking
• Hilly
• Mountainous
• Traffic free
• Event village
• Event expo
• Rural
• Mountains
• Age 18-100

• 1.8 km lake swimming
• 50 km gravel riding + 2000 m ascent
• 25 km fell running + 1200 m ascent