We are excited and proud to announce the 2025 GPT100 MILER is the AUTRA 100 mile Trail National Championship

Every year, AUTRA holds annual National Championship events over various times and distances. The AUTRA National Championships include the following races:

• 100 mile Trail

• Long Trail (90km and above)

• Short Trail (45-80km)

• 100km Road

• 50km Road

• 48 Hour Track

• 24 Hour Track

The SingleTrack team is excited to see the GPT100 Miler course, set in the stunning Grampians/Gariwerd, showcase the best of Australian 100-mile trail running. With its rugged terrain, steep climbs, and breathtaking landscapes, this race will be a true test of endurance, skill, and resilience. We can't wait to watch athletes battle it out for the title of National Champion and see who will rise to the top of this iconic trail running challenge.

It’s going to be an unforgettable weekend of fierce competition, and we’re proud to host this momentous race. Get ready to witness the nation’s best as they push their limits and define the future of Australian ultra-trail running!

Runner Eligibility

• 2025 runners must participate in the GPT100 MILER solo category

• As from 2020, the annual National Championships are now open to all Australian residents, with AUTRA membership no longer being a prerequisite.

• The National Championships will now include competitors who are both AUTRA members and non-AUTRA members.

• Eligible runners, who are Australian residents, do not include visitors to Australia on work permits, student visas, or visitor visas.

For further information, please refer to the AUTRA Website and we look forward to seeing you November 6-9th, 2025 at the GPT100 MILER!