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.
7 events upcoming
August 2026
Aberfeldy Middle Distance Triathlon
Loch Tay, Kenmore
Iconic middle distance triathlon — 1.9km swim in Loch Tay, 90km bike through Highland Perthshire, and 21km run. Part of the Triathlon Scotland National Series.
West Lancs Summer Triathlon
Edge Hill University, Ormskirk
Summer edition at Edge Hill University with new aquabike option (400m swim / 21k bike). Highly rated for first-time triathletes.
Geordieman Triathlon (10th Anniversary)
Druridge Bay Country Park
10th anniversary Geordieman half-triathlon with open water swim in Ladyburn Lake, scenic coastal bike and flat run. Solo and relay options.
September 2026
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.
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.
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.