9

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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Click an event for full event details, location, route, sustainability, what's included and how to enter.

Entries closed
Walk, jog or run along the capital to coast route for charity, with a range of distance options available and superb support all the way, for all abilities and experience levels.
  • Sat 25 - Sun 26 May
  • £10-£40
  • Entries closed
  • Sat 25 - Sun 26 May
  • £10-£40
  • Entries closed
Brighton, East Sussex, UK

London 2 Brighton Ultra Challenge

Walk, jog or run along the capital to coast route for charity, with a range of distance options available and superb support all the way, for all abilities and experience levels.

  • Entertainment
  • Chip timing
  • Enter online
  • GPS tracking
  • Fundraising required
  • Undulating
  • Event village
  • Age 14 & over
  • 1 day trail running
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 15 - Sun 16 Jun
  • £165
  • 1 charity
  • Sat 15 - Sun 16 Jun
  • £165
  • 1 charity
Chichester, West Sussex, West Sussex, UK

Race to the King | 100K Non-stop

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 13 Jul
  • £175
  • 3 charities
  • Sat 13 Jul
  • £175
  • 3 charities
Watlington, Oxfordshire, UK

Race to the Stones | 100K Non-stop

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 13 Jul
  • £255
  • 2 charities
  • Sat 13 Jul
  • £255
  • 2 charities
Watlington, Oxfordshire, UK

Race to the Stones | 100K Two Days with camping

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
Take on the full Race to the Stones 100K ultramarathon over two days, making your own arrangements for overnight accommodation at the halfway point.
  • Sat 13 Jul
  • £165
  • Sat 13 Jul
  • £165
Watlington, Oxfordshire, UK

Race to the Stones | 100K Two Days no camping

Take on the full Race to the Stones 100K ultramarathon over two days, making your own arrangements for overnight accommodation at the halfway point.

  • Chip timing
  • Enter online
  • GPS tracking
  • Undulating
  • Age 18 & over
  • 100 km trail running + 3704 ft ascent
The South Downs National Park is a superb backdrop for a real charity challenge featuring Beachy Head, the Seven Sisters and the South Downs Way with a choice of distances from 25km right up to 100km!
  • Sat 7 - Sun 8 Sep
  • £10-£40
  • 10 charities
  • Sat 7 - Sun 8 Sep
  • £10-£40
  • 10 charities
Eastbourne, East Sussex, UK

South Coast Ultra Challenge

The South Downs National Park is a superb backdrop for a real charity challenge featuring Beachy Head, the Seven Sisters and the South Downs Way with a choice of distances from 25km right up to 100km!

  • Newcomers
  • Music
  • Chip timing
  • Enter online
  • GPS tracking
  • Fundraising required
  • Undulating
  • Event village
  • Urban
  • Rural
  • Coast
  • Age 14 & over
  • 1 day trail running
  • Sun 26 May
Arundel, West Sussex, UK

UK Ultra South Downs 100K

  • 100 km trail running
  • Sat 6 Jul
Petersfield, Hampshire, UK

The Serpent Trail Races | 50K

  • 50 km trail running
  • Sat 6 Jul
Petersfield, Hampshire, UK

The Serpent Trail Races | 100K

  • 120 km trail running

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