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Half Marathon Calendar near Merthyr Tydfil 2025-2026

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

May 2026
May
30
Sa

Saturn Running - Cwmdare
Trail Run 3 km 7 km ... Marathon 50 km
June 2026
Jun
6
Sa

Midnight Mountain Marathon
Trail Run Half Marathon 26 mi
Jun
7
Su

Swansea Half Marathon
Half Marathon
July 2026
Jul
25
Sa

Saturn 7 Hour Time Challenge - Aberdare
3 km 7 km ... Marathon 50 km
Jul
25
Sa

Saturn Running - Cwmdare
Trail Run 3 km 7 km ... Marathon 50 km
Jul
26
Su

Pen Y Fan Challenge
Trail Run 5 mi 13 mi
October 2026
Oct
4
Su

Cardiff Half Marathon
Half Marathon
Oct
18
Su

Phoenix Running - Aberfan
Backyard Ultra 5 km 10 km Half Marathon Marathon
November 2026
Nov
14
Sa

Afan Forest Trail Half Marathon
10 km Half Marathon
December 2026
Dec
19
Sa

Nightmare before Xmas Trail ½ Marathon
Trail Run Half Marathon