Trionium Greensand Marathon Half Marathon

Dorking, Surrey

Organiser's Description

A classically simple but rather testing, hilly and challenging, out and back multi-terrain course from Dorking, over the Greensand hills of Surrey. ”One of the true great trail marathons in the UK”. The Half Marathon will be run on the same course at the Leith Hill Half Marathon (March).



  • 26.2 miles
  • 13.1 miles