There are 5 upcoming 5k races in Cardiff listed. Next up: The Cardiff 1.5k, 5k, 10k & Half Marathon MoRun (Sunday, 1 November 2026), Phoenix South Wales - Lest We Forget 2026 (Saturday, 14 November 2026), The Cardiff 5k, 10k and Half Marathon Winter Warmer Run (Sunday, 31 January 2027).
Upcoming races only, soonest first. Confirm dates and entry details with the organiser.
Cardiff · North Road, Cardiff CF10 3DX, UK
The Cardiff 1.5k, 5k, 10k & Half Marathon MoRun is organised by The Fix Events UK in Cardiff. Entry options: 5k MoRun; 10k MoRun; Half Marathon. The course surface has not been confirmed.
£30–£35
See entry options & fees
Cardiff · Harbour Drive, Cardiff, CF10 4, United Kingdom
Phoenix South Wales - Lest We Forget 2026 is organised by Phoenix Running South Wales in Cardiff. Entry options: 7 Hour Timed Event Including 5km, 10km, Half Marathon, Marathon, Ultra.
£35
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Cardiff · Bute Park, North Road, Cardiff, UK
The Cardiff 5k, 10k and Half Marathon Winter Warmer Run is organised by The Fix Events UK in Cardiff. Entry options: 5 km; 10 km; Half Marathon. The course surface has not been confirmed.
£25–£30
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Cardiff · Coopers Field - Bute Park, Off North Road, Cathays, CF10 3ER
A 5km obstacle-course fundraising event for Cancer Research UK at Coopers Field - Bute Park in Cardiff. Participants can run, jog or walk at their own pace. The course includes climbing, crawling and sliding obstacles. The organiser asks each participant to aim to raise £50.00. Starts are arranged in waves; choose a time when booking.
£11.24
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Cardiff · 149 King George V Dr E, Cardiff CF14 4EN, UK
Inflatable 5K - Cardiff is organised by UK Running Events in Cardiff. Entry options: 5K; 2.5K; 10K; 15K. The course surface has not been confirmed.
£24.50–£51.50
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Work out your target 5k time and pace.