Great Southern Endurance Run

NOV
21-23
2025
Experience alpine single track and rugged mountain trails based at Mt Hotham in the iconic Great Southern Endurance Run. Distances range from short mountain loops to epic 100 mile challenges with limited entries and strong race support.
21-23 Nov 2025
100 miles 50 miles 56 kilometers 28 kilometers 14 kilometers

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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.

100 mi
Gser100 – 100mile
50 mi
Gser50 – 50mile/50mile Relay
56 km
Gser56 – 56km
28 km
Gser28 – 28km
14 km
Gser14 – 14km

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