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Marathon Calendar near Monmouth 2025-2026

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

January 2026
Jan
16
Friday

The Gluttonous Run

Trail Run 5 km 10 km Half Marathon Marathon
Jan
17
Saturday

The Greedy Run

Trail Run 5 km 10 km Half Marathon Marathon
Jan
18
Sunday

The Envious Run

Trail Run 5 km 10 km Half Marathon Marathon
March 2026
Mar
1
Sunday

Brecon to Cardiff Xtreme

Trail Run Marathon 75 km
April 2026
Apr
19
Sunday

Newport Wales Marathon

10 km Half Marathon Marathon
May 2026
May
16
Saturday

OTT Marathon

Trail Run 10 mi 26 mi
June 2026
Jun
6
Saturday

Midnight Mountain Marathon

Trail Run Half Marathon 26 mi
July 2026
Jul
11
Saturday

Black Mountains 50

Trail Run 13 mi 26 mi 32 mi 50 mi
Jul
19
Sunday

Wye Valley Tunnel Run

Trail Run 10 km Half Marathon Marathon
October 2026
Oct
21
Wednesday

The Creepy Crawl

Trail Run 5 km 10 km Half Marathon Marathon
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