6 Inch Trail Marathon

North Dandalup, Australia • 21 Dec 2025

Set along the Munda Biddi Trail in Western Australia, the 6 Inch Trail Marathon offers a 46km marathon from North Dandalup to Dwellingup (and a 23.3km half marathon) on a forest trail south of Perth. Runners traverse rugged singletrack with about 925m of ascent and 775m of descent in the marathon. The course is marked with fluorescent tape, with aid at two checkpoints at 23km and 34km. The event is non-pacing, with compulsory gear checks and a single drop bag allowed. Transport to the start and from the finish is available; prize giving follows at the finish. Visit the organization's website for the most recent information.

Race information

46 km
925 m+
Marathon - 46 Km
23 km
340 m+
Half Marathon - 23.4 Km
Visit the organization's website for the most recent information.
Trail runs nearby

Join the Perth Trail Series Qi Gong trail run at Wungong Regional Park on 7 December, with colour coded courses from 4 to 16 km to suit all abilities. Expect live drumming, food trucks and a friendly atmosphere for kids and adults alike.

Run under neon lights on a spectator friendly 3 km trail loop at Lark Hill this Labour Day long weekend with on site entertainment until midnight. Choose distances from a kids 3k Spree to the 50 Mile Blowout and soak up the party vibe.

Join the C WISE Dwellingup 100 and Mighty Jarrah Trail Run on 12 September 2026 for a weekend of epic mountain biking and scenic trail running through Jarrah forest. Distances suit everyone from racers to families and four legged friends.

Experience the original Western Australia 100 mile trail at the WTF 50 & 100 Miler, set among scenic forest singletrack south of Dwellingup. Choose from 100 mile, 50 mile or 50 km solo or relay and tackle classic Munda Biddi trails.