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Running Calendar near Llanelli 2025-2026

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Monthly updates for Llanelli

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

Explore the top running races near Llanelli for 2025-2026! We've gathered 57 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
December 2025
Dec
14
Su

Brackla Harriers' Merthyr Mawr Christmas Pudding Race

10 km
Dec
20
Sa

Nightmare before Xmas Trail ½ Marathon

Trail Run 13 mi
Dec
20
Sa

Saturn Running - Cwmdare

Trail Run 3 km 5 km
Dec
21
Su

CRPRC 5k Christmas Fun Run

5 km
Dec
21
Su

Llanelli Santa Dash

5 km
Dec
26
Fr

Festive 5 Boxing Day Race

Dec
26
Fr

Porthcawl Boxing Day Run

7 km
Dec
31
We

New Years Eve Ready Races

10 km 10 mi
January 2026
Jan
1
Th

The Prince of Wales New Year's Day Race

6 km
Jan
18
Su

West Glamorgan XC League - Margam Park

Trail Run 5 mi
Jan
24
Sa

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
February 2026
Feb
1
Su

West Glamorgan XC League - Kenfig Nature Reserve

Trail Run 4 mi
March 2026
Mar
1
Su

Colour Run Cymru

5 km
Mar
1
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
7
Sa

The Hateful 8 Loopy Ultra

Backyard Ultra 9 mi
Mar
15
Su

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
Mar
15
Su

West Glamorgan XC League - Gnoll Park

Trail Run 5 mi
Mar
22
Su

Red Warrior Annual Multi Terrain Races

Trail Run 5 km 10 km 20 km
Mar
29
Su

Swansea 10 Miler

5 mi 10 mi
Mar
29
Su

Margam Park Duathlon

Duathlon