Collie River Ultra Marathon

Collie, Australia • 17-19 Sep 2027

Collie River Ultra Marathon

The Collie River Ultra, also known as CRU100, is a trail running event organized by the Perth Trail Series in Western Australia. The event takes place over a multi-day period and is centered around the trails of the Collie River region.

The event follows a specific trail run colour system to categorize its courses. Current listings for the event include:

  • Blue Course

This ultra marathon is part of a broader series of trail running events that emphasize environmental sustainability and connection to the local landscape. The organizers acknowledge the traditional custodians of the land and their spiritual relationship to the waters and community where the trails are located. Participants navigate natural terrain as part of a scheduled program that focuses on the trail running experience in a regional setting. Visit the organization's website for the most recent information.

Race information

100 km
Cru100
Visit the organization's website for the most recent information.
Trail runs nearby

The Collie River Ultra Marathon will take place in Collie on Saturday 19 September 2026.

True Blue Ultra in Australind features multiple race distances on a certified 12.5 km lap along the Leschenault Inlet, with aid stations, facilities nearby, a 6 km kids race, and AURA approval.