Perisher & Thredbo, Snowy Mountains, NSW
Held each November in the Snowy Mountains, New South Wales. Choose the Kosci 30, Kosci 50 or Kosci 100 and prepare for runnable alpine trails, sustained climbing and mountain weather that can change quickly.
Distance
Elevation
Point to point from Perisher Ski Resort to Friday Flat, Thredbo. Wide alpine fire trail and subalpine meadow, with a rocky technical descent before the finish.
Distance
Elevation
A loop from Friday Flat through alpine plateau, snow gum forest, ski trails and flowing singletrack, with the climb towards Eagles Nest adding a sustained alpine test.
Distance
Elevation
A loop from Friday Flat through the high country of Kosciuszko National Park, with exposed ridgelines, rocky descents and the likelihood of continuing into the night.
Why Her Trails
Her Trails brings together event-specific programming, weekly coaching, female-focused education and a community preparing for the same race weekend.
A progressive Kosci 30, 50 or 100 program built around alpine fire trail, altitude and the unpredictable Snowy Mountains weather.
Bring your training, injury, pacing, fuelling, recovery and race day questions to a live group coaching call each week. Ask live or submit your question beforehand, with replays available afterwards.
Practical education woven throughout the program on menstrual cycles, perimenopause, menopause, pelvic health, fuelling, energy availability, recovery and injury risk.
Strength, mobility and recovery practices sit inside the training program. They are not treated as optional extras or referred to another product.
Prepare alongside women taking on the same event. Share the uncertain weeks, long run lessons, questions, progress and race week anticipation with people who understand the goal.
Practise pacing, fuelling, hydration, mandatory gear, altitude management and race day logistics during the training block, before those decisions carry consequences.
A plan on its own is just numbers on a page. Her Trails turns those numbers into training you understand, support you can lean on, and a community that gets you to the start line ready.
How Do I Join
Kosci 30, 50 or 100, priced by distance.
Best value if you are training year round.
Travelling to Perisher or Thredbo for 26 to 27 November 2026? Tell us and we'll help you plan around race weekend.
Kosci Through the Her Trails Lens
What the course demands
Kosci's trails are predominantly wide alpine fire trail and subalpine meadow: very runnable, with one notable rocky technical descent on each course. The 100km adds technical ridgelines and likely night running.
The real challenge is altitude and weather, not terrain. You're racing up to 2,228m, in late November conditions that can swing from a near-freezing morning start to 25 degrees, then to snow, hail or a thunderstorm, sometimes all in one day.
Mandatory gear is not a formality here. A waterproof jacket, thermal layer and headlamp are things you may genuinely need.
How this program prepares you
Aerobic strength built deliberately, and race specific long runs that mirror the demands of your distance, from the introductory Kosci 30 to the full Kosci 100 crossing.
Altitude awareness, layering strategy and mandatory gear familiarity built into your training, so race morning's cold start and an afternoon storm are both things you've already trained through, not surprises.
A program that respects real life while it prepares a steady mind for a long day at altitude in the Snowy Mountains.
Kosci Training
Her Trails builds dedicated, race specific coaching for all three Kosci distances we support.
14 Week Program
The perfect introduction to alpine trail racing: smooth, runnable trails and breathtaking views, point to point from Perisher Ski Resort to Friday Flat, Thredbo. Gradually builds fitness, strength and endurance through base work, hill sessions and longer runs, with race specific pacing and fuelling before taper.
$350 AUD · or 3×$130
View Program20 Week Program
A structured, terrain specific build for the alpine plateau, snow gum forest, ski trails and flowing singletrack up to the Eagles Nest climb. Coaching support, community connection and progression that protects your body while building real strength.
$495 AUD · or 3×$195
View Program20 Week Program
A runnable alpine 100km, built to develop aerobic durability first, then layer in fuelling, power hiking, low light confidence, alpine kit fluency and decision making under fatigue. Not a mileage contest: a progression toward being organised, durable and calm enough to execute a long alpine race.
$490 AUD · or 3×$195
View ProgramThinking Through Your Distance?
Practical coaching insight to help you understand the challenge before you choose.
From The Trail
The mountain does not care what pace you ran at sea level.
Kosci's trails are largely runnable, which is exactly why altitude catches people out. Above 2,000m your effort feels harder for the same pace, and the Snowy Mountains can hand you sun, snow and a thunderstorm in the same afternoon. Respect for the mountain, not just fitness, is what gets you through.
Race Ready
Gear Systems for Long Trail Races
Kosci's mandatory gear list is not a formality. A practical look at building a kit system you can actually rely on when the weather turns.
Read the Trail Note →Race Ready
Power Hiking as a Skill
On Kosci's longer climbs, an efficient hike often beats a forced jog. Why power hiking is trained, not improvised.
Read the Trail Note →Race specific coaching for Kosci 30, 50 and 100, or full access as an All-In member.
Kosci Through the Her Trails Lens
Kosci rewards more than fitness. It rewards runners who respect the mountain, carry the right gear and keep making sound decisions as the weather does whatever it decides to do.
What the Courses Demand
The Kosci 30, 50 and 100 use mostly wide, runnable alpine fire trail and subalpine meadow. That accessibility is part of the appeal, but it puts the real challenge somewhere other than the footing.
High alpine altitude makes effort feel harder at the same pace. Late November weather is genuinely unpredictable: a near-freezing morning start, a warm afternoon, then snow, hail or a thunderstorm, sometimes all on the same day. The 100km adds technical ridgelines, rocky descents and hours of night running for most finishers.
Across all 3 distances, the goal is not simply to run well when conditions are kind. It is to keep moving well and keep making sound decisions when the mountain changes its mind.
How Her Trails Prepares You
Each distance has its own progressive program, building aerobic fitness, power hiking strength and race specific endurance without asking you to reproduce the full race in training.
Layering strategy, mandatory gear familiarity, fuelling and pacing for altitude are practised within your training, so they are second nature before race morning.
The programming goes beyond the sessions themselves, with in depth guidance on pacing, fuelling, recovery, menstrual cycles, perimenopause and menopause, injury risk and adapting training around real life. Weekly live coaching calls give you a place to bring your own context, ask questions and work through when to maintain the plan, modify a session or step back.
Evidence-informed trail running guidance for women, written by the Her Trails coaching team.
