Sun 17 Mar 2024 Dorking, Surrey, UK

Trionium Greensand Marathon

Never say 'Never' - it's back!

  • Sun 17 Mar 2024
The Priory C of E School, Dorking

Trionium Greensand Marathon



All ages

  • 26.2 miles trail running


The Greensand Marathon will be revived in a one-off special edition, in 2024. Preceded by massed singing of 'Jerusalem.' The 'hybrid' course will be marked in the first and last quarters (essentially to Leith Hill Tower and back), but entrants will need to navigate their way to the half way point. Entrants are responsible for correctly navigating the route. There will be water stations in between the tower and the half way point, and at the half way point. Entry numbers strictly capped to 100. There is a cut-off point at Leith Hill Tower of 70 minutes. Headphones/ear-buds/broadcasting not permitted.

Event details

  • All fitness levels
  • Event village
  • Newcomers


  • Distance markers
  • Navigation required
  • No headphones
  • Water stations


  • All ages
  • Entries open
  • Enter online