11

100K ultra runs in South East

Find 100k ultra runs near me in South East for 2024/2025 - search by date or place, display on a map or use the advanced search to find your perfect race.

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An epic challenge, making a full 106km circuit of the Isle of Wight, starting and finishing in Chale, enjoy well stocked rest stops and superb scenery every step of the way.
  • Sat 3 May 2025
  • 12 charities
  • Sat 3 May 2025
  • 12 charities
Ventnor, Isle of Wight, UK

Isle of Wight Ultra Challenge | Full continuous charity places

An epic challenge, making a full 106km circuit of the Isle of Wight, starting and finishing in Chale, enjoy well stocked rest stops and superb scenery every step of the way.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Hilly
  • Age 18 & over
  • 106 km multi terrain running + 1960 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 2025
  • 12 charities
  • Sat 3 - Sun 4 May 2025
  • 12 charities
Ventnor, Isle of Wight, UK

Isle of Wight Ultra Challenge | Full 2 day daylight charity places

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
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 - Sun 22 Jun 2025
  • 2 charities
  • Sat 21 - Sun 22 Jun 2025
  • 2 charities
Chichester, West Sussex, UK

Race to the King | 100K Non-stop charity places

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
Take on the full 100K Race to the Stones ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route.
  • Sat 12 Jul 2025
  • 3 charities
  • Sat 12 Jul 2025
  • 3 charities
Watlington, Oxfordshire, UK

Race to the Stones | 100K Non-stop charity places

Take on the full 100K Race to the Stones ultramarathon in one go. Fully supported through day and night on an incredibly scenic and historic route.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 100 km trail running + 3704 ft ascent
Take on the full 100K Race to the Stones ultramarathon with an overnight stop at the all-inclusive Basecamp, meaning a good nights' sleep in between the 50K stints.
  • Sat 12 Jul 2025
  • 3 charities
  • Sat 12 Jul 2025
  • 3 charities
Watlington, Oxfordshire, UK

Race to the Stones | 100K Two Days with camping charity places

Take on the full 100K Race to the Stones ultramarathon with an overnight stop at the all-inclusive Basecamp, meaning a good nights' sleep in between the 50K stints.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 100 km trail running + 3704 ft ascent
The full distance option of the South Coast Challenge from sunny Eastbourne, over the magnificent Seven Sisters, onto Cuckmere Haven and over the South Downs all the way to historic Arundel.
  • Sat 6 - Sun 7 Sep 2025
  • 11 charities
  • Sat 6 - Sun 7 Sep 2025
  • 11 charities
Polegate, East Sussex, UK

South Coast Ultra Challenge | Full 100km continuous charity places

The full distance option of the South Coast Challenge from sunny Eastbourne, over the magnificent Seven Sisters, onto Cuckmere Haven and over the South Downs all the way to historic Arundel.

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2100 m ascent
The full distance option of the South Coast Challenge over 2 days with 57km on day 1 and 43km on day 2, meaning you experience the route in daylight with the chance to sleep overnight.
  • Sat 6 - Sun 7 Sep 2025
  • 10 charities
  • Sat 6 - Sun 7 Sep 2025
  • 10 charities
Polegate, East Sussex, UK

South Coast Ultra Challenge | Full 100km over 2 days charity places

The full distance option of the South Coast Challenge over 2 days with 57km on day 1 and 43km on day 2, meaning you experience the route in daylight with the chance to sleep overnight.

  • Chip timing
  • Enter online
  • GPS tracking
  • Hilly
  • Age 18 & over
  • 100 km trail running + 2100 m ascent
  • Sat 26 Apr 2025
Brighton, East Sussex, UK

Brighton to London Ultra

  • 100 km trail running + 1489 m ascent
  • Sat 26 Apr 2025
Chesham, Buckinghamshire, UK

Chiltern Hills 100K

  • 100 km trail running
  • Sun 25 May 2025
Arundel, West Sussex, UK

UK Ultra South Downs 100K

  • 100 km trail running
  • Sat 12 Jul 2025
Watlington, Oxfordshire, UK

Race to the Stones | 100K Two Days no camping

  • 100 km trail running + 3704 ft ascent

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