From alpine meadows and snow gum forests to rugged ridgelines and historic high-country huts, the GSER 100-mile course showcases the breathtaking beauty of Victoria’s iconic High Country. With crystal-clear creeks, rolling pastures, and some of Australia’s most dramatic mountain peaks, this is the ultimate ultra-trail running experience.
Starting from the heart of Mt Hotham, runners will set off to the cheers of the crowd, embarking on an epic journey across the Victorian Alps.
The course weaves through the majestic Dargo High Plains, the Bogong High Plains, and the iconic Razorback Ridge. Along the way, runners will traverse challenging climbs, descend into lush valleys, and pass through landmarks such as the Cobungra River, Mount Feathertop, and Federation Hut.
As the adventure unfolds, runners will encounter breathtaking views of the high-country wilderness, with every summit and descent testing their resolve. The journey culminates in a triumphant finish at Mt Hotham, where the sense of accomplishment and camaraderie await.
Spanning 100 miles of rugged, scenic, and truly unforgettable trails, the GSER is designed for those who crave the ultimate challenge amidst the raw beauty of Australia’s alpine wilderness. This is ultra-trail running at its finest.
FULL AID STATION =
Drop Bags, Water, VFuel Endurance Drink Mix, Coke, hash browns, noodles, homemade soup, toasties, fruit, chips, lollies, tea, and coffee will be available.
(Vegan and Gluten-free options available)
BASIC AID STATION =
Water, chips and lollies.
WATER POINT =
Water.
(C) = Crew Access and Support
(P) = Pacer Access and Support from this Aid Station
At GSER, we love our Trail Crews almost as much as we love our runners. You’re the most colourful, the loudest, and absolutely essential to the incredible atmosphere of race weekend!
But you’re not just there to cheer – you’ve got a mission: get your runner to that finish line.
Your first job? Read the Support Crew section in the GSER 2025 Runner Guide, released one month before the race. It’s packed with key details you’ll need for a smooth, successful day.
Want to know where to go, how to get there, and what to expect? The Trail Crew page is your best friend—loaded with crew-specific info, maps, and tips.
(P) = Pacer access and (C) = Crew support is allowed at that Aid Station.
At GSER 2025, Pacers are allowed for our 100-mile (GSER100) event.
Not only will GSER Pacers take in the scenic mountain views of the Victorian high country, but they’ll also provide their runner with moral support, and companionship and keep them motivated to make it to the finish line.
GSER 100-mile runners will be allowed 3 pacers to join them:
All PACERs will have full access to the Aid station facilities.
PACER fees are $30 per pacer, per leg.
All PACERS must be registered online no later than November 17th, 2025.
