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Running Calendar near Merthyr Tydfil 2026-2027

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Explore the top running races near Merthyr Tydfil for 2026-2027! We've gathered 136 exciting races in the area. Check out our detailed list below to find your next local race.

Running Calendar United Kingdom
Half Marathons Marathons Trail Runs Triathlons
August 2026
Aug
27
Th

The Bay Aquathlon Series

Aquathlon Super sprint 400 3000 m Sprint 400 5000 m Super sprint 400 5000 m Sprint 750 5000 m
Aug
27
Th

The Bay 5K Series

5 km
Aug
27
Th

Parc Bryn Bach Aquathlon Series

Aquathlon Sprint 750 m 5 km
Aug
29
Sa

Black Cattle Ultra Gwartheg Duon

Trail Run 33 mi 71 km
Aug
29-30
Sa - Su

Cardiff Pentath-Run

5 km 10 km Half Marathon Marathon
Monthly updates for Merthyr Tydfil

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Aug
29
Sa

Chapel Bogathlon

Cross Triathlon Sprint 60 2 1 mi
Aug
30
Su

Swyd Tri

Triathlon Sprint 750 m 20 5 km
Aug
30
Su

Pontypridd Park Relays

Aug
30
Su

SSRC Fest

Aug
31
Mo

Machen Mountain Race

Trail Run 7 km
September 2026
Sep
2
We

Run4all 5k Summer Series

5 km
Sep
4-5
Fr - Sa

SAS Endurance

Trail Run 32 km
Sep
5
Sa

Pegasus - The RIDUM

Trail Run 15 mi
Sep
5
Sa

Roman Run

16 mi
Sep
6
Su

CDF 10K - Cardiff

10 km
Sep
6
Su

Waun Fach Fell Race

Trail Run 7 mi
Sep
11-13
Fr - Su

Wales Adventure Triathlon

Multisport Wales Adventure Triathlon... 2 47 13 mi
Sep
12
Sa

Phoenix Running - Trelewis

Road Race Trail Run Backyard Ultra 3 mi 10 km Half Marathon Marathon
Sep
12
Sa

Mynyddoedd Du/Black Mountains Fell Race

Trail Run 27 km
Sep
13
Su

Phoenix Running - Deri

5 km 10 km ... Marathon 7 hr
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