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Marathons in South Wales

Find marathons near me in South Wales for 2025/2026 - filter by date or location, display on a map or use the advanced search to find your perfect race.

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A classic distance from Penrice Castle on a loop featuring Oxwich Bay and its nature reserve, the stunning Wales Coast Path, picnic at Rhossili, the Gower Way then a celebration and medal!
  • Sat 19 Jul
  • £139
  • Entries closed
  • Sat 19 Jul
  • £139
  • Entries closed
Swansea, West Glamorgan, UK

Gower Peninsula Ultra Challenge | Marathon 42K Loop

A classic distance from Penrice Castle on a loop featuring Oxwich Bay and its nature reserve, the stunning Wales Coast Path, picnic at Rhossili, the Gower Way then a celebration and medal!

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 42 km multi terrain running + 900 m ascent
  • Sun 12 Oct
Newport, Rhode Island, USA

Amica Newport Marathon

  • 26.2 miles road running + 866 ft ascent
  • Sat 8 Nov
Swansea, West Glamorgan, UK

EnduranceLife - Gower | Marathon

  • 27.4 miles trail running + 3425 ft ascent

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