Triathlon events in UK
23 upcoming triathlon events in UK.
London T100
25 Jul 2026
London
World Triathlon Championship Series London at T100 Weekend
25 Jul 2026
London
London T100 Triathlon 2026
25 Jul 2026
London
World Triathlon Championship Series London
25 Jul 2026
London
Guildford Triathlon & Kids Races
26 Jul 2026
Windsor, Berkshire
Cowman Triathlon
2 Aug 2026
Olney, Buckinghamshire
The Bridge Children's Triathlon
2 Aug 2026
Dartford, Kent
ATW Odyssey Triathlon
8 Aug 2026
Riverside Park, Regatta Meadow, St Neots, Cambridgeshire PE19 7AB
Big South East Swim & Aquathlon 5k
9 Aug 2026
Dartford, UK
Big South East Swim & Aquathlon
9 Aug 2026
Dartford, Kent
Wimbleball Lake Triathlon
30 Aug 2026
Wimbleball Lake, near Dulverton, Somerset
Something Wild Festival - Rocky Horror SwimRun LONG (17K) Pairs
5 Sept 2026
Plymouth, UK
Triathlon Y Bala
6 Sept 2026
Bala, Gwynedd
Bridge August 2nd Triathlon
6 Sept 2026
Dartford, Kent
Sundowner Triathlon
12 Sept 2026
Allerthorpe Lakeland Park, Melbourne Road, Pocklington, York YO42 4RL
East Cheshire Junior & Sprint Aquathlon
13 Sept 2026
The King's School, Alderley Road, Prestbury, Cheshire. SK10 4SP
Woking Autumn Triathlon & Junior Aquathlon
13 Sept 2026
Woking Leisure Centre, Woking Park, Kingfield Road, Woking, GU22 9BA
IRONMAN 70.3 Weymouth
18 Sept 2026
Weymouth, Dorset
IRONMAN 70.3 Weymouth
20 Sept 2026
Weymouth, Dorset
Swim Long - Eton Dorney
20 Sept 2026
Edenbridge, Kent
Hever Castle Triathlon & Multisport
26 Sept 2026
Hever Castle, Edenbridge, Kent
Superfeet Sandman - Triathlon & Duathlon
27 Sept 2026
Llanfairpwllgwyngyll, Gwynedd
London Aquathlon
31 Oct 2026
London