- Sun 26 May
- £45-£55
- Sun 26 May
- £45-£55
Marlow, Buckinghamshire, UK
The One on the River | Marlow | May
Taking place across the scenic Thames Valley area. Swim the river, cycle the hilly open roads, or run the flat Thames path – with a selection of activities over grass, tarmac, and trail.
- Newcomers
- Event village
- Park
- Sustainability policy
- Age 17 & over
- Super sprint triathlon
- Sprint triathlon
- Olympic triathlon
- Super sprint duathlon
- Sprint duathlon
- + 10 more races
- Mon 6 May
Tonbridge, Kent, UK
Tonbridge Triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquathlon
- Sprint aquabike
- Sun 12 May
Ringwood, Hampshire, UK
The Huntsman Triathlon
- Middle aquabike
- Sprint duathlon
- Sprint triathlon
- Olympic triathlon
- Half Ironman
- Sun 12 May
East Grinstead, West Sussex, UK
The East Grinstead Triathlon
- Novice triathlon
- Sprint triathlon
- Sprint aquabike
- Sun 19 May
Arundel, West Sussex, UK
Arundel Lido Triathlon
- Sprint triathlon
- Olympic triathlon
- Sprint aquabike
- Standard aquabike
- Sun 19 May
Banbury, Oxfordshire, UK
Banbury Triathlon
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike
- Wed 29 May
Windsor, Buckinghamshire, UK
Dorney Evening Triathlon
- Super sprint triathlon
- Sprint triathlon
- Sprint aquabike