The Trionium Picnic Marathon

Date & Location

Dorking, Surrey

Organiser’s Description

A course of ferocious toughness, run entirely on rough tracks. A very hilly out-and-back route with a height gain/loss of more than 6000 feet – a run for the exceptionally hearty! ‘Easily the hardest marathon in Britain'.


  • 26.2 miles
  • Running
  • Marathon
  • 26 - 50km
  • 26 - 50 miles
  • Trail

Added By

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    United Kingdom

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