Caernarfon close

Running Calendar near Caernarfon 2025-2026

Header image

Explore the top running races near Caernarfon for 2025-2026! We've gathered 46 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
May 2026
May
15-17
Fr - Su

Ultra-Trail Snowdonia by Utmb

Trail Run 25 km 56 km 104 km 164 km
May
30
Sa

Abersoch 10K

3 km 10 km
June 2026
Jun
13
Sa

Welsh 3000’s Ultra Run

Trail Run 50 km
Jun
14
Su

Slateman Triathlon & Duathlon

Triathlon Duathlon
Jun
14
Su

Paddy Buckley Recce Fun Run - Snowdon

Trail Run 20 km
Jun
20
Sa

GB Ultras - Ultra Wales 50

Trail Run 51 mi
Jun
20
Sa

Abersoch Triathlon

Triathlon
Jun
28
Su

Wild Horse Brewing Co. Llandudno Triathlon & Duathlon

Triathlon
July 2026
Jul
11-12
Sa - Su

Snowdonia Trail Marathon Eryri

Trail Run 10 km 13 mi 27 mi 57 km
Jul
11
Sa

Snowdon24

Trail Run 50 km 100 km 100 mi
Jul
18
Sa

Welsh 3000 Challenge (14 Peaks)

Trail Run 50 km
Jul
21-23
Tu - Th

Paddy Buckley Round

Trail Run 100 km
August 2026
Aug
15
Sa

Skyrun Eryri / Snowdon Skyrace

Trail Run 16 km 27 km 38 km 55 km
September 2026
Sep
4-6
Fr - Su

Ring O' Fire

Trail Run 47 mi 130 mi
Sep
5
Sa

Yr Wyddfa Ultra 100

Trail Run 102 mi
Sep
5
Sa

Yr Wyddfa Ultra 50

Trail Run 45 mi
Sep
6
Su

Caernarfon Half Marathon

13 mi
Sep
7-11
Mo - Fr

Montane Dragon's Back Race

Trail Run
Sep
12
Sa

Welsh 3000’s Ultra Run

Trail Run 50 km
Sep
19-22
Sa - Tu

The Brutal Extreme Triathlons

Trail Run