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Triathlons in Dorset

Find triathlons near me in Dorset for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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Bike past historic landmarks, and run beside the Great Feild at Poundbury. As you finish each leg of the course, you’ll get closer to the crowds of people cheering you on at that final stretch.
  • Sun 26 Oct
  • £45
  • Sun 26 Oct
  • £45
Dorchester, Dorset, UK

The Dorchester Sprint Triathlon

Bike past historic landmarks, and run beside the Great Feild at Poundbury. As you finish each leg of the course, you’ll get closer to the crowds of people cheering you on at that final stretch.

  • Newcomers
  • Enter online
  • Undulating
  • Event village
  • Plastic-free event
  • Age 16 & over
  • 300 m pool swimming
  • 21 km road cycling + 792 ft ascent
  • 5 km road running + 147 ft ascent
Test every discipline in this unforgettable triathlon set along the South West Coast. Catch sight of the iconic Portland Bill lighthouse as you cycle around the beautiful Isle of Portland.
  • Sun 12 Apr 2026
  • £45
  • Sun 12 Apr 2026
  • £45
Portland, Dorset, UK

The Osprey Sprint Triathlon

Test every discipline in this unforgettable triathlon set along the South West Coast. Catch sight of the iconic Portland Bill lighthouse as you cycle around the beautiful Isle of Portland.

  • Newcomers
  • Chip timing
  • Enter online
  • Undulating
  • Event village
  • Plastic-free event
  • Age 15-99
  • 300 m pool swimming
  • 15 km road cycling + 848 ft ascent
  • 5 km trail running + 24 ft ascent
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.
  • Sun 14 Jun 2026
  • £135
  • Sun 14 Jun 2026
  • £135
Weymouth, Dorset, UK

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
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.
  • Sun 14 Jun 2026
  • £80
  • Sun 14 Jun 2026
  • £80
Weymouth, Dorset, UK

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.

  • Chip timing
  • Enter online
  • Undulating
  • Age 18 & over
  • 1500 m sea swimming
  • 40 km road cycling + 1040 ft ascent
  • 10 km multi terrain running + 132 ft ascent
The Sprint 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.
  • Sun 14 Jun 2026
  • £70
  • Sun 14 Jun 2026
  • £70
Weymouth, Dorset, UK

Weymouth WMD Triathlon | Weymouth WMD Sprint Triathlon

The Sprint 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
  • 750 m sea swimming
  • 20 km road cycling + 659 ft ascent
  • 5 km multi terrain running + 69 ft ascent
  • Sun 14 Sep
Weymouth, Dorset, UK

IRONMAN 70.3 Weymouth

  • 1.2 miles sea swimming
  • 56 miles road cycling
  • 13.1 miles road running

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