Caernarfon
Triathlon Calendar near Caernarfon 2026-2027
Monthly updates for Caernarfon
Get new running races (and updates) in your inbox every month.
Explore the top triathlons near Caernarfon for 2026-2027! We've gathered 6 exciting races in the area. Check out our detailed list below to find your next local race.
September 2026
Triathlon and duathlon at Newborough Forest with a beach start, sea swim, mixed road and trail run, and chip timing.
October 2026
Bike and run events on Harlech Beach with sand-surface courses, relay options, and distances from short runs to combined bike-run races on 18 October 2026.
June 2027
Multi-distance triathlon and duathlon in Llanberis on 13 June 2027, from Sprint to full 140.6, with an event village, chip timing and bilingual services.
Seaside triathlon in Abersoch with Olympic and Sprint courses, a sea swim, bike laps, and a beach finish with music and a beach bar.
Coastal triathlon and duathlon in Llandudno with sea swims by the pier, closed road cycling on Marine Drive and a promenade run.
July 2027
A multi-terrain triathlon and duathlon in Eryri (Snowdonia) at Plas y Brenin featuring lake swims, mountain cycling, trail runs, multiple distances and a charity partner.