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Half Marathon Calendar near Trethomas 2025-2026

Explore the top half marathons near Trethomas for 2025-2026! We've gathered 32 exciting races in the area. Check out our detailed list below to find your next local race.

May 2026
May
10
Sunday

Great Bristol Run

10 km Half Marathon
May
16
Saturday

True Grit Trail Half Marathon

Trail Run 13 mi
May
30
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
June 2026
Jun
6
Saturday

Midnight Mountain Marathon

Trail Run Half Marathon 26 mi
Jun
14
Sunday

Cheddar Gorge Challenge

Trail Run 3 km 6 km ... Half Marathon Marathon
July 2026
Jul
19
Sunday

Wye Valley Tunnel Run

Trail Run 10 km Half Marathon Marathon
Jul
25
Saturday

Saturn 7 Hour Time Challenge - Aberdare

3 km 7 km ... Marathon 50 km
Jul
25
Saturday

Saturn Running - Aberdare

Backyard Ultra 3 km 7 km ... Marathon 50 km
Jul
26
Sunday

Pen Y Fan Challenge

Trail Run 5 mi 13 mi
August 2026
Aug
15
Saturday

Chepstow Running Festival Half Marathon

5 km 10 km Half Marathon
September 2026
Sep
27
Sunday

Forest of Dean Autumn Half Marathon

Trail Run 13 mi
October 2026
Oct
4
Sunday

Cardiff Half Marathon

Half Marathon
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