Events
- 17 May - Eton SuperSprints
- 18 May - Aegon St Annes Triathlon
- 18 May - Big Cow Sprint Triathlon 1
- 18 May - East Grinstead Triathlon
- 18 May - Mansfield Sprint Triathlon - Timex Series Race 2
- 18 May - Marazion Triathlon
- 18 May - Torino 3
- 18 May - Watford-Merchant Taylors’ Triathlon
- 21 May - Summer Duathlon Series Race 1
- 23 May - Canford Evening Aquathlon
- 24 May - Grendon Triathlon
- 25 May - Brigg Adventure Challenge
- 25 May - Gloucester Triathlon
- 25 May - Goodness Shakes Muscles of Steel Day
- 25 May - Pembrokeshire Duathlon
- 25 May - Rhondda Cynon Taf Dragon Triathlon
- 25 May - Wetherby Triathlon
- 26 May - Thames Turbo Tri Series Race 3
- 28 May - F3 Events Evening Sprint Triathlon
- 31 May - Rother Valley Children's Triathlon
