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Half Marathon Calendar near Gorseinon 2026-2027

Monthly updates for Gorseinon

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

Explore the top half marathons near Gorseinon for 2026-2027! We've gathered 18 exciting races in the area. Check out our detailed list below to find your next local race.

January 2026
Jan
24
Sa

Saturn Running - Cwmdare

Trail Run 3 km 5 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 5 km ... Marathon 50 km
Mar
15
Su

Saturn Running - Cwmdare

Trail Run 3 km 5 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 5 km ... Marathon 50 km
May 2026
May
30
Sa

Saturn Running - Cwmdare

Trail Run 3 km 5 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 5 km ... Marathon 50 km
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
12
Sa

Celtic Trail Races

Trail Run 13 mi 26 mi 34 mi
Dec
19
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run Half Marathon
Dec
20
Su

Saturn Running - Cwmdare

Trail Run 3 km 5 km ... Marathon 50 km