Merthyr Tydfil close

Trail Running Calendar near Merthyr Tydfil 2025-2026

Header image
Monthly updates for Merthyr Tydfil

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

Explore the top trail runs near Merthyr Tydfil for 2025-2026! We've gathered 49 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
January 2026
Jan
18
Su

Cardiff Trail 10k

Trail Run 10 km
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

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
15
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
15
Su

West Glamorgan XC League - Gnoll Park

Trail Run 5 mi
April 2026
Apr
4
Sa

Pegasus - The BOWUM

Trail Run 30 mi
Apr
11
Sa

Vale Coastal Races

Trail Run 10 mi 19 mi 33 mi
Apr
18
Sa

MTC Afanc

Trail Run 40 mi
Apr
18
Sa

Beast Of The Beacons

Trail Run 10 mi 20 mi 40 mi
Apr
18-19
Sa - Su

Cymoedd Sir Fynwy

Trail Run 20 mi 30 mi 50 mi
Apr
19
Su

MTC Y Draig Goch

Trail Run 35 mi
Apr
26
Su

Saturn Running - Cwmdare

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