Wimbleball Lake Triathlon

AUG
30
2026
Take on the Wimbleball Lake Triathlon on 30 August 2026 and race across a scenic lake and rolling countryside. New in 2026 is a full iron distance with open water swimming, multi lap bike and run courses and lakeside camping.
Sun 30 Aug 2026
Run Distance: 10.5 Km (1... Run Distance: 21 Km (2 La... Run Distance: 42 Km (4 La... Bike Distance: 140.6 Mile... Bike Distance: 70.3 Miles...

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Wimbleball Lake Triathlon

The Wimbleball Lake Triathlon is organised by Sportiva Events and takes place on 30/08/2026 at Wimbleball Lake, near Dulverton, Somerset, TA22 9NU. The venue previously hosted Ironman 70.3 for ten years. In 2026 the event will include an iron distance triathlon for the first time. The race begins with an open-water swim in the lake, where swimming is not normally permitted.

Race format and event services

The bike and run courses use local roads and paths with rolling terrain and multiple laps depending on distance:

  • Bike: one lap (Standard), two laps (70.3), four laps (iron distance)
  • Run: one, two or four laps of a 10.5K loop

Facilities and event services listed by the organiser include a long-sleeved event t-shirt (cotton or tech), professional chip timing, medals for finishers, silicone swim hats, professional first aid and water safety, public liability insurance, fully marked and marshalled course, and feed stations. The event is British Triathlon registered and permitted. Live GPS tracking is provided for the iron distance only. Camping is available at Wimbleball Lake; camping bookings are handled by the lake. Visit the organization's website for the most recent information.

Marathon
Run Distance: 42 Km (4 Laps)
Half Marathon
Run Distance: 21 Km (2 Laps)
11 km
Run Distance: 10.5 Km (1 Lap)
Bike Distance: 140.6 Miles (4 Laps)
Bike Distance: 70.3 Miles (2 Laps)
Bike Distance: Standard (1 Lap)
Swim Leg (lake)

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