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100K ultra runs in UK in May 2025

Find 100k ultra runs near me in UK in May 2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Great challenges need great settings, and up to 2,000 adventurers will take on the Isle of Wight stunning coastal path – all out to push themselves further.
  • Sat 3 May
  • £199
  • 13 charities
  • Sat 3 May
  • £199
  • 13 charities
Ventnor, Isle of Wight, UK

Isle of Wight Ultra Challenge | Full Continuous

Great challenges need great settings, and up to 2,000 adventurers will take on the Isle of Wight stunning coastal path – all out to push themselves further.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Hilly
  • Age 18 & over
  • 106 km multi terrain running + 1800 m ascent
The full 106km circumnavigation of the Isle of Wight, in daylight hours. Overnight at Cowes for a well-earned rest on this wonderful exploration of the coastal routes around the island.
  • Sat 3 - Sun 4 May
  • £199
  • 13 charities
  • Sat 3 - Sun 4 May
  • £199
  • 13 charities
Ventnor, Isle of Wight, UK

Isle of Wight Ultra Challenge | Full 2 Day Daylight

The full 106km circumnavigation of the Isle of Wight, in daylight hours. Overnight at Cowes for a well-earned rest on this wonderful exploration of the coastal routes around the island.

  • Chip timing
  • Enter online
  • Undulating
  • Hilly
  • Age 18 & over
  • 106 km multi terrain running + 1960 m ascent
Walk, jog or run along the spectacular UNESCO World Heritage coastline from Corfe Castle past Lulworth Cove and Durdle Door, with full support, welcoming base camp and finish line celebration!
  • Sat 17 - Sun 18 May
  • £199
  • 14 charities
  • Sat 17 - Sun 18 May
  • £199
  • 14 charities
Wareham, Dorset, UK

Jurassic Coast Ultra Challenge | Full 100km over 2 days

Walk, jog or run along the spectacular UNESCO World Heritage coastline from Corfe Castle past Lulworth Cove and Durdle Door, with full support, welcoming base camp and finish line celebration!

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2300 m ascent
A demanding challenge, taking on 100km along the UNESCO World Heritage Jurassic Coast, starting from Corfe Castle on a fully-supported challenge visiting the highlights of the region.
  • Sat 17 - Sun 18 May
  • £199
  • 14 charities
  • Sat 17 - Sun 18 May
  • £199
  • 14 charities
Wareham, Dorset, UK

Jurassic Coast Ultra Challenge | Full 100km continuous

A demanding challenge, taking on 100km along the UNESCO World Heritage Jurassic Coast, starting from Corfe Castle on a fully-supported challenge visiting the highlights of the region.

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2300 m ascent
Leafy Richmond to sunny Brighton – over the North Downs and the South Downs, with some wonderful Surrey and Sussex countryside in between, fully supported all the way with a huge celebratory finish!
  • Sat 24 May
  • £199
  • 14 charities
  • Sat 24 May
  • £199
  • 14 charities
Richmond, UK

London 2 Brighton Ultra Challenge | Full 100km Continuous

Leafy Richmond to sunny Brighton – over the North Downs and the South Downs, with some wonderful Surrey and Sussex countryside in between, fully supported all the way with a huge celebratory finish!

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 1500 m ascent
Leafy Richmond to sunny Brighton, over the North and South Downs, with some wonderful Surrey and Sussex countryside - all in daylight hours and with a good nights' sleep mid-way!
  • Sat 24 - Sun 25 May
  • £199
  • 14 charities
  • Sat 24 - Sun 25 May
  • £199
  • 14 charities
Richmond, UK

London 2 Brighton Ultra Challenge | Full 100km over 2 days

Leafy Richmond to sunny Brighton, over the North and South Downs, with some wonderful Surrey and Sussex countryside - all in daylight hours and with a good nights' sleep mid-way!

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Hilly
  • Age 18 & over
  • 100 km trail running + 1500 m ascent
  • Sun 4 May
Shipston-on-Stour, Warwickshire, UK

Tempo Trail Races | Ultra

  • 100 km trail running
  • Sat 10 May
London, UK

London 100 Ultra Marathon | 100K

  • 100 km trail running
  • Sat 17 May
Newton Abbot, Devon, UK

Devon Coast to Coast Ultra Marathon | Devon 100K (Mid Devon and Exmoor)

  • 100 km trail running
  • Sun 25 May
Arundel, West Sussex, UK

UK Ultra South Downs 100K

  • 100 km trail running
  • Sun 25 May
Great Yarmouth, Norfolk, UK

Angles Way Ultra 100K & 50K | 100K

  • 100 km trail running

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