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Half Marathon Calendar near Bannau Brycheiniog National Park (Brecon Beacons) 2025-2026

Explore the top half marathons near Bannau Brycheiniog National Park (Brecon Beacons) for 2025-2026! We've gathered 23 exciting races in the area. Check out our detailed list below to find your next local race.

October 2025
Oct
5
Sunday

Cardiff Half Marathon

Half Marathon
Oct
18
Saturday

Afan Forest Trail Half Marathon

10 km Half Marathon
Oct
18
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
November 2025
Nov
8
Saturday

Beacons Ultra

Trail Run 13 mi 26 mi 49 mi
Nov
15
Saturday

Margam Trail Races

Trail Run 5 km 10 km Half Marathon
Nov
16
Sunday

Cardiff Trail Half Marathon

Trail Run Half Marathon
Nov
22
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
December 2025
Dec
6
Saturday

Secret Santa Tinsel Half Marathon

Trail Run 14 km 10 mi Half Marathon
Dec
6
Saturday

Secret Santa Series

Trail Run 14 km 10 mi 13 mi
Dec
13
Saturday

Celtic Trail Races

Trail Run 13 mi 26 mi 34 mi
Dec
20
Saturday

Nightmare before Xmas Trail ½ Marathon

Trail Run Half Marathon
Dec
21
Sunday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
January 2026
Jan
24
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
February 2026
Feb
1
Sunday

The Cardiff Half Marathon Winter Warmer Run

5 km 10 km Half Marathon
March 2026
Mar
1
Sunday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
Mar
22
Sunday

Merthyr Half Marathon

Half Marathon
April 2026
Apr
19
Sunday

Newport Wales Marathon

10 km Half Marathon Marathon
Apr
26
Sunday

Saturn 7 Hour Time Challenge - Aberdare

3 km 7 km ... Marathon 50 km
Apr
26
Sunday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
May 2026
May
16
Saturday

True Grit Trail Half Marathon

Trail Run 13 mi
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