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Trail Running Calendar near Cardiff Bay 2025-2026

Explore the top trail runs near Cardiff Bay for 2025-2026! We've gathered 57 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
13
Sa

Celtic Trail Races

Trail Run 13 mi 26 mi 34 mi
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
11
Sa

Steaming to the Coast

Trail Run 11 km 11 mi 26 mi