Seaford
Triathlon Calendar near Seaford 2026-2027
Monthly updates for Seaford
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Seaford for 2026-2027! We've gathered 8 exciting races in the area. Check out our detailed list below to find your next local race.
March 2027
Indoor pool swim with poolside transition followed by a seafront run in Littlehampton, offered in two distances with age categories and prizes.
May 2027
East Grinstead Triathlon on 9 May 2027 features pool swims, a 26 km bike through nearby villages and town runs, with relay, Try a Tri and aquabike options.
Triathlon at Arundel Lido on 16 May 2027 with Standard and Sprint options, heated 25m pool swims, a rolling bike course and run routes near the castle.
June 2027
A community-focused triathlon at Patcham High School with pool swims, varied bike and run formats, an event village, and multiple accessibility features.
July 2027
A summer aquathlon at The Wave, Littlehampton combining a 25m pool swim with a flat run course; options are 800m swim with 10k or 400m swim with 5k.
Monthly updates for Seaford
Get new running races (and updates) in your inbox every month.
A multi-distance triathlon festival on the South Downs coast with closed-road bike courses, seaside swims, youth races and relay and single-discipline options.
August 2027
Supertri Brighton on 29 August 2027 continues the Brighton & Hove Triathlon on the seafront, offering Supersprint, Sprint and Olympic distances on a fast, flat, traffic free course.
September 2027
A multisport weekend at Hever Castle in Kent featuring triathlon, duathlon, aquabike, aquathlon, swim and run races across multiple distances and junior categories.