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50K ultra runs in South Wales

Find 50k ultra runs in South Wales in 2026/2027 - filter by date, location or category, display on a map or use the advanced search to find your perfect race.

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Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this 50K event instead and earn a fantastic London-themed medal!
  • Sun 26 Apr
  • £23-£35
Aberdare, Mid Glamorgan

The Nearly But Not Quite London Marathon | Wales | 50K

Didn't get a ballot entry into The London Marathon? Don't panic, come and experience this 50K event instead and earn a fantastic London-themed medal!

  • 50 km trail running
Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run 50K?
  • Sat 30 May
  • £22-£34
Aberdare, Mid Glamorgan

Rocky at 50 Run | Wales | 50K

Come and celebrate 50 years since the release of the iconic Rocky film! Have you got the Eye of The Tiger, the guts to get the glory and the will to rise up to the challenge and run 50K?

  • 50 km road running
Set on the stunning Gower Peninsula, the UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges and woodlands.
  • Sat 18 - Sun 19 Jul
  • £49-£199
Swansea, West Glamorgan

Gower Peninsula Ultra Challenge

Set on the stunning Gower Peninsula, the UK’s first Area of Outstanding Natural Beauty and famous for its golden beaches, limestone cliffs, wild moors, ridges and woodlands.

  • 100K ultra run 2
  • Ultra run
  • 50K ultra run 2
  • Marathon
  • Multi-terrain run
  • + 1 more race
Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!
  • Sat 25 Jul
  • £22-£34
Aberdare, Mid Glamorgan

Ooops I Ran It Again | Wales | 50K

Who hasn't completed a race, sworn they will never run again and then booked onto another one the following day?!

  • 50 km road running
Who doesn't like cake?! The Great British Bake Run is back for another year with a totally unique baking competition with prizes on the day too!
  • Sat 22 Aug
  • £22-£34
Aberdare, Mid Glamorgan

Great British Bake Run | Wales | 50K

Who doesn't like cake?! The Great British Bake Run is back for another year with a totally unique baking competition with prizes on the day too!

  • 50 km road running
Come and join in for the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!!
  • Sun 20 Dec
  • £27-£40
Aberdare, Mid Glamorgan

The Snow Globe Gallop Bobble Hat Run - Wales | 50K

Come and join in for the Christmas Carol Bobble Hat Run in the picturesque Dare Valley in Wales! At this event you can earn yourself a running buff as well as one of the incredible themed medals!!

  • 50 km trail running

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