5K runs in South Wales
Find 5k runs in South Wales in 2025/2026 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.
Filter by date
Filter by place
MapEvent listings
Select an event for photos, video, route, location, reviews, entry fees and how to enter.
- Sat 8 Nov
- £25-£30
Cardiff MoRun | 5K
MoRunning brings everyday people together with the focus being to inspire you, your family, your kids and your friends to have the best time running! Get ready for the 5K, Cardiff!
- Chip timing
- Enter online
- Flat
- All ages
- 5 km road running
- Sat 22 Nov
- £22-£27
Smurf Run | Wales | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a fantastic Smurf-themed medal and goody bag at the finish!
- Enter online
- Traffic free
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sat 20 Dec
- £9
Santa Run Wales | 5K
Get your Santa suits, reindeer antlers, and elf ears ready — Christmas is coming, and so is the most magical 5K fun run of the year!
- Enter online
- Traffic free
- All ages
- 5 km trail running
- Sun 21 Dec
- £27-£32
A Christmas Carol Bobble Hat Run | Wales | 5K
Come and join the day of running and aim to complete a 5K at your own pace on a scenic course then receive a bobble hat, themed medal and goody bag at the finish!
- Enter online
- Age 12 & over
- 5 km road running
- Sat 24 Jan 2026
- £22-£27
Spice Up Your Run - Wales | 5K
If you're looking to spice up your run or you need some running like you've never needed running before, then this is the event for you!
- Enter online
- Age 12 & over
- 5 km trail running + 249 ft ascent
- Sun 1 Mar 2026
- £22-£27
St Davids Day Dragon Run | 5K
Come and get involved in the second St David's Day Dragon Run in the beautiful Dare Valley Country Park in, of course, Wales!
- Enter online
- Age 12 & over
- 5 km trail running
- Sun 15 Mar 2026
- £24-£30
The Dashing Dog Charity Run - Wales | 5K
Come and join for Dashing Dog Charity run in the beautiful Dare Valley Country Park in Wales, not only is the scenery beautiful and you will earn one of the awesome medals...
- Enter online
- Age 12 & over
- 5 km road running + 135 ft ascent
- Sun 26 Apr 2026
- £22-£27
The Nearly But Not Quite London Marathon - Wales | 5K
Didn't get a ballot entry into The London Marathon 2026? Don't panic, come and run with Saturn Running instead!
- Enter online
- Age 12 & over
- 5 km trail running + 0 ft ascent
- Sat 15 Nov
Margam Park Trail Races | 5K
- 5.1 km trail running + 140 m ascent
- Sun 1 Feb 2026
The Cardiff 5K, 10K and Half Marathon Winter Warmer Run | 5K
- 5 km road running
- Sun 22 Mar 2026
Red Warrior Multi Terrain Races
- 5K run
- 10K run
- Multi-terrain run
- CaniCross 3
- Sat 11 Apr 2026
RTT Gower Trail Half Marathon & 10K | 5K
- 5 km trail running