Explore Cardiff
The Welsh capital has a growing reputation for being a centre of outdoor adventure. With a host of hills on its doorstep and based on the Severn Estuary, Cardiff is a dream location for triathletes, swimmers, walkers and anyone with a keen interest in exploring the great outdoors. Discover runs, rides, swims, walks, triathlons, challenges and other outdoor activities in and around Cardiff here.
Map view
- Sun 4 Oct
- £5-£60
Oysho Cardiff Half
An iconic road race around Wales' capital offering a flat course from the castle to the marina and over the Cardiff Bay barrage!
- 13.1 miles road running + 81 m ascent
- Sun 1 Mar
- £10-£35
St Davids Day Run
To celebrate St David’s Day join in Bute Park Cardiff and take on a 5k, 10k and Half Marathon run, or the mini run for little dragons.
- Fun run
- 5K run
- 10K run
- Half marathon
- Sun 1 Mar
- £80
Brecon to Cardiff Ultra
The Brecon to Cardiff Ultra is a 43-mile, fully marked, point-to-point race following the Taff River from the heart of the Bannau Brycheiniog (Brecon Beacons) National Park...
- 70 km trail running
- Sat 9 May
- £40-£50
Radyr Trail Races: Half Marathon and Marathon
Radyr Trail Half Marathon & Trail Marathon start in Wales' capital city, Cardiff but you'll soon feel a million miles away as you leave the hustle and bustle behind you for idyllic trails and scenery.
- Half marathon
- Marathon
- Sun 6 Sep
- £9-£34
CDF 10K
The CDF 10K is an iconic and historic event, celebrating its 40 year anniversary in 2026!
- Fun run 2
- 10K run