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Running Calendar near Cardiff Bay 2025-2026

Explore the top running races near Cardiff Bay for 2025-2026! We've gathered 110 exciting races in the area. Check out our detailed list below to find your next local race.

Half Marathons Marathons Trail Runs Triathlons
July 2026
Jul
12
Sunday

Mic Morris Torfaen 10k

10 km
Jul
18
Saturday

Rabbit Run Wales

Trail Run 12 km 40 km
Jul
18
Saturday

Dusk Till Dawn - Bridgend

Backyard Ultra 10 mi
Jul
18-19
Sa - Su

Dragon Coastal Ultramarathon

Trail Run 30 mi 50 mi 100 mi
Jul
19
Sunday

Wye Valley Tunnel Run

Trail Run 10 km Half Marathon Marathon
Jul
25
Saturday

Beacons Way Ultra 100km

Trail Run 100 km
Jul
25-26
Sa - Su

Beacons Way Ultra 100 Mile

Trail Run 100 mi
Jul
25-26
Sa - Su

Ultra X Wales

Trail Run
Jul
25
Saturday

South West Coast 50 Ultra Challenge

Trail Run 10 km 25 km 50 km
Jul
25
Saturday

Saturn 7 Hour Time Challenge - Aberdare

3 km 7 km ... Marathon 50 km
Jul
25
Saturday

Saturn Running - Cwmdare

Trail Run 3 km 7 km ... Marathon 50 km
August 2026
Aug
2
Sunday

Phoenix Running - Deri

3 mi
Aug
8
Saturday

Mendip Marauder

Trail Run 30 mi 50 mi
Aug
15
Saturday

Chepstow Running Festival Half Marathon

5 km 10 km Half Marathon
Aug
22
Saturday

The Summer GMU

Trail Run 30 mi 45 mi
Aug
22
Saturday

Beast of Llangattock

Trail Run 10 km 10 mi 20 mi 32 mi
Aug
29
Saturday

Black Cattle Ultra Gwartheg Duon

Trail Run 33 mi 44 mi
September 2026
Sep
5
Saturday

Pegasus - The RIDUM

Trail Run 30 mi
Sep
5
Saturday

The Drop - Bristol

10 mi 15 mi
Sep
6
Sunday

Bridgwater Half Marathon

10 km Half Marathon
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