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Trail Running Calendar near Cardiff 2025-2026

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Monthly updates for Cardiff

Get new running races (and updates) in your inbox every month.

Explore the top trail runs near Cardiff for 2025-2026! We've gathered 63 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
20
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run 13 mi
Dec
20
Sa

Saturn Running - Cwmdare

Trail Run 3 km 5 km
Dec
28
Su

Community Canal Run

Trail Run 8 mi 14 mi
January 2026
Jan
17
Sa

Dark Skies Series

Trail Run 5 km 10 km
Jan
18
Su

Cardiff Trail 10k

Trail Run 10 km
Jan
18
Su

Riverbank Rollick

Trail Run 10 mi
Jan
18
Su

CF64 Winter Race

Trail Run 6 mi
Jan
18
Su

West Glamorgan XC League - Margam Park

Trail Run 5 mi
Jan
24
Sa

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
February 2026
Feb
1
Su

West Glamorgan XC League - Kenfig Nature Reserve

Trail Run 4 mi
Feb
22
Su

Ironwood Challenge

Trail Run
Feb
22
Su

Sorbrook Slog

Trail Run 7 mi
March 2026
Mar
1
Su

Brecon to Cardiff Classic

Trail Run 70 km
Mar
1
Su

Brecon to Cardiff Xtreme

Trail Run Marathon 75 km
Mar
1
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
7
Sa

The Winter Gmu

Trail Run 30 mi 45 mi
Mar
15
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
28
Sa

Bristol Trail & Ultra

Trail Run 25 km 55 km
April 2026
Apr
4
Sa

Pegasus - The BOWUM

Trail Run 30 mi
Apr
11
Sa

Steaming to the Coast

Trail Run 11 km 11 mi 26 mi