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Running calendar near Caernarfon 2025-2026

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Explore the top running races near Caernarfon for 2025-2026! We've gathered 30 exciting races in the area. Check out our detailed list below to find your next local race.

July 2025
Jul
19
Saturday

Welsh 3000 Challenge (14 Peaks)

Trail Run 50 km
Jul
22-24
Tu - Th

Paddy Buckley Round

Trail Run 100 km
August 2025
Aug
2
Saturday

Ogwen25 - Yr Helgi Du

Trail Run 10 km 25 km 40 km
Aug
29-31
Fr - Su

Ring O' Fire

Trail Run 47 mi 130 mi
September 2025
Sep
1-6
Mo - Sa

Montane Dragon's Back Race

Trail Run 380 km
Sep
6
Saturday

Yr Wyddfa Ultra 50

Trail Run 45 mi
Sep
6
Saturday

Yr Wyddfa Ultra 100

Trail Run 100 mi
Sep
7
Sunday

Caernarfon Half Marathon

13 mi
Sep
12
Friday

Snowdonia Mountain Skills Weekend

Trail Run 5 mi 8 mi 10 mi
Sep
20
Saturday

Abersoch Half Marathon

Trail Run Road Race 13 mi
October 2025
Oct
5
Sunday

Bangor City Half Marathon

10 km 13 mi
Oct
25
Saturday

Marathon Eryri

42 km
November 2025
Nov
9
Sunday

Anglesey Trail Half Marathon

Trail Run 10 km 13 mi
Nov
15-16
Sa - Su

Slate Trail Ultra

Trail Run 88 km 145 km
Nov
16
Sunday

Conwy Half Marathon

13 mi
Nov
16
Sunday

Guided Trail Run - Dolwyddelan

Trail Run 10 km
February 2026
Feb
15
Sunday

Nick Beer Llandudno 10k

10 km
March 2026
Mar
1
Sunday

Jones O Gymru Anglesey Half Marathon

10 km 13 mi
April 2026
Apr
14
Tuesday

MTC Angelystor

37 mi
Apr
14-19
Tu - Su

MTC Cymrun 26

256 mi
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