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50K ultra runs in London

Find 50k ultra runs near me in London for 2025/2026 - search by date or place, display on a map or use the advanced search to find your perfect race.

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Entries close tomorrow
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
  • Entries close tomorrow
  • Sat 24 May
  • £199
  • Entries close tomorrow
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
The first half option of the Thames Path Challenge from leafy South West London on the River Thames along the river to Hampton Court to finish at Runnymede for a big celebration finish and hot meal!
  • Sat 13 Sep
  • £139
  • 18 charities
  • Sat 13 Sep
  • £139
  • 18 charities
London, UK

Thames Path Ultra Challenge | 1st Half

The first half option of the Thames Path Challenge from leafy South West London on the River Thames along the river to Hampton Court to finish at Runnymede for a big celebration finish and hot meal!

  • Chip timing
  • Enter online
  • GPS tracking
  • Flat
  • Undulating
  • Age 18 & over
  • 50 km trail running + 200 m ascent

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