Trailsplus - Unbreakable - Marysville
Always double-check with the organizer's website! This page may contain affiliate links.
About the race
Unbreakable is an Australian trail running event inspired by the Barkley Marathons. The event was first held in 2021 and adopts several concepts from the Barkley format, including multiple long laps, navigational challenge with map and compass, and unusual on-course tasks. Since its inception, only one runner has completed the full event.
The format uses repeated laps. Successful runners complete five laps; lap distance is given as roughly 30–50 km. Time cutoffs for each lap are indicated as between 8 and 12 hours. Participants navigate without course markers, relying on a map and compass, and must perform on-course tasks similar to the Barkley requirement of locating books and supplying specific pages for their race number. The organiser describes some event details as deliberately withheld until race time.
The event is situated somewhere in Victoria. Entry fees listed for 2026 range from about $300 to $450 depending on entry period. Trailsplus donates one dollar per participant to Canteen, the Australian organisation for young people living with cancer, and the organisation reports total donations exceeding $80,000. The event acknowledges permission from the originator of the Barkley concept and lists a number of commercial sponsors and partners. Visit the organization's website for the most recent information.
