Great Southern Endurance Run

Mount Hotham, Australia • 21-23 Nov 2025

Event overview

The Great Southern Endurance Run (GSER) is an alpine trail running event held in Victoria's High Country, based at Mt Hotham Alpine Resort for the 2025 edition. The event is organized around mountain trails and predominantly single-track sections, with parts of the course following the Australian Alps Walking Track. The 2025 edition notes limited entries at each start line, mandatory gear requirements, and a maps page listed as "2025 Edition Under Construction." Race support features include drop bag locations, support crew access, designated spectator vantage points, pacer arrangements, and a volunteer program.

Race options and course features

Distances offered in 2025 cover short mountain loops up to ultra-distance routes:

  • 14 km
  • 28 km
  • 56 km
  • 50 mile (including a 50-mile relay option)
  • 100 mile

Longer courses traverse named trails and features such as Bon Accord track, Bungalow Spur, Mt Feathertop, the Razorback, Mt Hotham, and the Mt Hotham Huts walk trail. The 56 km and longer events emphasize extensive single-track sections and sustained mountain terrain. The event also provides information pages for qualifying criteria, runner information, race nutrition, accommodation, and adaptive athlete arrangements. Visit the organization's website for the most recent information.

Race information

UTMB 20K UTMB 50K UTMB 100K UTMB 100M
100 mi
Gser100 – 100mile
50 mi
Gser50 – 50mile/50mile Relay
56 km
Gser56 – 56km
28 km
Gser28 – 28km
14 km
Gser14 – 14km
Visit the organization's website for the most recent information.
Trail runs nearby

Discover alpine challenge at Hotham this November with GSER 2025, a multi day mountain trail event through spectacular Victorian Alps. With distances from 14 km to 100 mile there is a course for beginners and seasoned ultra runners alike.

Tackle the Bogong to Hotham Rooftop Run, a mountain trail race from Mountain Creek to the Mt Hotham summit with 29 km, 35 km and 64 km options. Expect big climbs, sweeping alpine views and a true backcountry challenge on 17 January 2026.

Take on the Mt Bogong Conquestathon, a single day hike or run around Victoria's highest peak with a challenging 21 km loop and 1,410 m of climb. Limited to 300 spots, the community event supports Birkebeiner Search and Rescue.

The La Sportiva Razorback Run is a challenging alpine trail running event held in Harrietville, Victoria, within the Alpine National Park. It offers three distances: 22 km, 40 km, and 64 km, each featuring rugged terrain and spectacular mou..