ATW Bristol Triathlon

JUL
12
2026
Take in Bristol Harbour and the Clifton Suspension Bridge at the ATW Bristol Triathlon, a closed road swim bike and run around Cumberland Basin and the River Avon. Sprint, Standard, aquabike and relay options available.
Sun 12 Jul 2026
Sprint - 750m Swim - 21km... Standard - 1500m Swim - 4...

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Event

The ATW Bristol Triathlon is a closed-road triathlon held in Bristol and based around Bristol Harbour. The swim takes place in the Cumberland Basin, the bike uses a traffic-free section of Portway passing under the Clifton Suspension Bridge, and the run follows the River Avon. The event is organised by ATW, a national events company established in 2011 that stages running, triathlon and other multi-discipline events and records over 40,000 entries a year. The next scheduled race date is 12/07/2026.

Race details and logistics

The event is a mass-start, non-drafting competition with two main distance options, plus alternative formats. Aquabike (swim-bike) is available for both distances and there is a relay option over the Standard distance. There is no parking at the event venue; parking options exist in the city centre. ATW’s transfer and refund policy states there are no refunds or transfers to another person, but entries can be transferred to any future ATW event up to 48 hours before the original event date without proof. Visit the organization's website for the most recent information.

  • Sprint: 750m swim - 21km bike - 5km run
  • Standard: 1500m swim - 42km bike - 10km run
Marathon
Standard - 1500m Swim - 42km Bike - 10km Run
Half Marathon
Sprint - 750m Swim - 21km Bike - 5km Run

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