UK Watersports Events Calendar
UK Triathlon Events
Every UK triathlon event on our calendar — filter by region, check the dates and entry links, and pack a dry bag.
4 events upcoming
September 2026
SEPT13
Bournemouth International Triathlon
Bournemouth Pier
Major South Coast triathlon with Sprint and Standard distances plus Aquathlon and Aquabike options, featuring a sea swim off Bournemouth’s blue-flag beach.
TriathlonSouth West
SEPT13
Aviemore Off-Road Triathlon
Loch Morlich, Glenmore Forest
Off-road adventure triathlon with open water swim in Loch Morlich, mountain biking and trail running through Glenmore Forest in the Cairngorms.
TriathlonScotland
SEPT20
IRONMAN 70.3 Weymouth
Lodmoor Country Park, Weymouth
The flagship IRONMAN 70.3 in the South West — 1.2-mile ocean swim, 56-mile bike through Dorset countryside, and 13.1-mile run along Weymouth seafront.
TriathlonSouth West