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100K ultra runs in UK in June 2025

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

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100km of trails, high passes, stunning scenery, Ambleside, the magnificent Lake Windermere, nature reserves, forests and over 2,500m of ascent. Fully supported all the way with a celebratory finale!
  • Sun 1 - Sun 8 Jun
  • £199
  • 13 charities
  • Sun 1 - Sun 8 Jun
  • £199
  • 13 charities
Kendal, Cumbria, UK

Lake District Ultra Challenge | Full 100km continuous

100km of trails, high passes, stunning scenery, Ambleside, the magnificent Lake Windermere, nature reserves, forests and over 2,500m of ascent. Fully supported all the way with a celebratory finale!

  • Chip timing
  • Enter online
  • GPS tracking
  • Mountainous
  • Age 18 & over
  • 100 km trail running + 2500 m ascent
100km of trails, high passes, stunning scenery, Ambleside, the magnificent Lake Windermere, nature reserves, forests and over 2,500m of ascent. Fully supported with a good night's sleep mid-way.
  • Sat 7 - Sun 8 Jun
  • £199
  • 13 charities
  • Sat 7 - Sun 8 Jun
  • £199
  • 13 charities
Kendal, Cumbria, UK

Lake District Ultra Challenge | Full 100km over 2 days

100km of trails, high passes, stunning scenery, Ambleside, the magnificent Lake Windermere, nature reserves, forests and over 2,500m of ascent. Fully supported with a good night's sleep mid-way.

  • Chip timing
  • Enter online
  • GPS tracking
  • Mountainous
  • Age 18 & over
  • 100 km trail running + 2500 m ascent
Take on the full 100K Race to the King ultra marathon challenge in one go. Fully supported through day and night on a route combining castles and coastal scenery.
  • Sat 21 Jun
  • £170-£180
  • 3 charities
  • Sat 21 Jun
  • £170-£180
  • 3 charities
Chichester, West Sussex, UK

Race to the King | 100K

Take on the full 100K Race to the King ultra marathon challenge in one go. Fully supported through day and night on a route combining castles and coastal scenery.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 100 km trail running + 4619 ft ascent
Head into the rolling green hills of the Cotswolds with leg-testing climbs and breathtaking views on your 100km mission, with stops every 12-13km and a halfway break in Wotton, you're fully supported.
  • Sat 21 - Sun 22 Jun
  • £199
  • 13 charities
  • Sat 21 - Sun 22 Jun
  • £199
  • 13 charities
Cirencester, Gloucestershire, UK

Cotswold Way Ultra Challenge | Full 100km continuous

Head into the rolling green hills of the Cotswolds with leg-testing climbs and breathtaking views on your 100km mission, with stops every 12-13km and a halfway break in Wotton, you're fully supported.

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2250 m ascent
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  • Sat 21 - Sun 22 Jun
  • £199
  • 13 charities
  • Sat 21 - Sun 22 Jun
  • £199
  • 13 charities
Cirencester, Gloucestershire, UK

Cotswold Way Ultra Challenge | Full 100km over 2 days

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  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2250 m ascent
Take on the full 100km in a figure-of-eight route through the north and south of the Peak District in daylight with a good night's rest and full support to get you to the finish line celebration!
  • Sat 28 - Sun 29 Jun
  • £199
  • 13 charities
  • Sat 28 - Sun 29 Jun
  • £199
  • 13 charities
Bakewell, Derbyshire, UK

Peak District Ultra Challenge | Full 100km over 2 days

Take on the full 100km in a figure-of-eight route through the north and south of the Peak District in daylight with a good night's rest and full support to get you to the finish line celebration!

  • Chip timing
  • Enter online
  • Undulating
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2150 m ascent
Take on the full 100km in a figure-of-eight route through the north and south of the Peak District with stops every 12-13km and whatever support you need to get you to the finish line celebration!
  • Sat 28 - Sun 29 Jun
  • £199
  • 13 charities
  • Sat 28 - Sun 29 Jun
  • £199
  • 13 charities
Bakewell, Derbyshire, UK

Peak District Ultra Challenge | Full 100km continuous

Take on the full 100km in a figure-of-eight route through the north and south of the Peak District with stops every 12-13km and whatever support you need to get you to the finish line celebration!

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 100 km trail running + 2150 m ascent
  • Sat 7 Jun
Castle Douglas, Dumfries and Galloway, UK

Ultra Scotland 50

  • 56 miles trail running + 2447 m ascent

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