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Half Marathon Calendar near Llandeilo 2025-2026

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Monthly updates for Llandeilo

Get new running races (and updates) in your inbox every month.

Explore the top half marathons near Llandeilo for 2025-2026! We've gathered 18 exciting races in the area. Check out our detailed list below to find your next local race.

December 2025
Dec
20
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run 13 mi
January 2026
Jan
24
Sa

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Jan
24
Sa

Saturn Running - Aberdare

Backyard Ultra 3 km 5 km ... Marathon 50 km
March 2026
Mar
1
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
22
Su

Merthyr Half Marathon

Half Marathon
April 2026
Apr
5
Su

Pendine Sands Races

Trail Run 5 km 10 km Half Marathon Marathon
Apr
11
Sa

RTT Gower Trail Half Marathon

Trail Run 5 km 10 km Half Marathon
Apr
26
Su

Saturn 7 Hour Time Challenge - Aberdare

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

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
May 2026
May
30
Sa

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
June 2026
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
September 2026
Sep
20
Su

Pumsaint Trail Half Marathon

Trail Run Half Marathon
November 2026
Nov
14
Sa

Afan Forest Trail Half Marathon

10 km Half Marathon
Nov
14
Sa

Margam Trail Races

Trail Run 5 km 10 km Half Marathon
December 2026
Dec
19
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run Half Marathon