The current edition of this event is on 16 December 2018.
The 6 Inch Trail Marathon on Sunday, 17 December 2017 is an annual 47km ultra marathon race on the Munda Biddi trail from North Dandalup to Dwellingup in the South West of Western Australia, about 80km South of Perth.
A 23km option has been added for the 2017 event.
The 47km running event covers a small section of the 1000km long The Munda Biddi Trail (which means path through the forest in the Noongar Aboriginal language) and fast becoming a world class cycle trail. With this in mind the wide trails have been shaped nicely for runners to get into a rhythm and enjoy the unspoilt bushlands and shade of towering eucalyptus trees.