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Half Marathon calendar Wales 2025-2026

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Explore the best half marathons in Wales for 2025-2026! Our updated list features 43 exciting races across the region. Find your next race in Wales below and join the running community at these great events!

November 2025
Nov
16
Sunday

Conwy Half Marathon

13 mi
December 2025
Dec
13
Saturday

Winter Celtic Trail Races

Trail Run 13 mi 26 mi 34 mi
Dec
20
Saturday

Nightmare before Xmas Trail ½ Marathon

Trail Run 13 mi
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