Ironman 70.3 Weymouth

SEP
20
2026
Take on IRONMAN 70.3 Weymouth along the Jurassic Coast with an ocean swim, rolling bike through Dorset countryside and a flat seafront run. Scenic and fast, this half distance race doubles as a qualifier for the World Championship.
Sun 20 Sep 2026
Swim Run Bike

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Event overview

IRONMAN 70.3 Weymouth is a half-distance triathlon held in Weymouth, United Kingdom. The event date is September 20, 2026. The venue is near the Jurassic Coast and the Weymouth area previously hosted the London 2012 Olympic and Paralympic sailing events. The race is Flex90 eligible and is a qualifier for the IRONMAN 70.3 World Championship.

Course and distances

The race includes an ocean swim, a rolling bike course through Dorset countryside, and a flat run along Weymouth's seafront esplanade. Distances are:

  • 1.2-mile ocean swim
  • 56-mile bike
  • 13.1-mile run

Average conditions listed for the event show water temperatures around 63°F / 17°C and typical air temperatures ranging from about 35°F / 8°C to 44°F / 13°C.

Additional details

The event has received athlete awards in recent surveys, including top rankings in categories for the region. Course information, traffic impact, athlete guides, and volunteer information are provided by the organiser. The location coordinates are given for Weymouth, United Kingdom. Visit the organization's website for the most recent information.

13 mi
Run
Swim
Bike