Races
Julian Alps Trail Run
Kranjska Gora. Julian Alps singletrack. Vrsic Pass. Mangart views and limestone cols above Slovenia.
120 km+13,942 ft-12,877 ft26 hours1,356 ft to 6,831 fttech 6/10Checkpoints per race bookJulian AlpsTriglav National ParkWSER qualifierSeptember
Distance120 km
Gain+13,942 ft
Loss-12,877 ft
Altitude1,356 ft to 6,831 ft
Technicality6/10
Air35°F to 75°F
- Start1,599 ft
- High6,831 ft
- Low1,356 ft
- Finish2,664 ft
Field, 2025 · 5-year samplescraped
Starters548
Finish rate78%
Median24:02
Sub-24213
Geometryderived
Steepest drop1,565 ft-14.1% over 2.1 mi
Night miles30 misunset near 18:00 local
Course records
Men05:59:44Marjan ZUPANCIC
Women06:57:29Ajda RADINJA
The cruxVrsic Pass high traverse and Mangart saddle exposure (near mile 48)
Course DNA
The Course
Julian Alps Trail Run runs 120 km through Kranjska Gora, Slovenia. +13,942 ft gain and -12,877 ft loss. Surfaces skew 80% alpine trail / 15% scree / 5% road. Vrsic Pass high traverse and Mangart saddle exposure. High point near 6,831 ft. Low near 1,356 ft. September temps run 35°F to 75°F. The course rewards patience early and punishes rushed descents after mile 37.
The Work
Train for 13,942 feet of climbing across 120 km. Back-to-back long runs on trail. Practice power-hiking grades above 15 percent. 26 hours total means limited margin: rehearse fueling every 45 to 60 minutes and downhill eccentric work weekly. Technicality 6/10. Build a block that simulates the crux near mile 48.
Kit
September in Kranjska Gora, Slovenia: plan for 35°F to 75°F. Mandatory shell if rain is in forecast. Headlamp with spare batteries if 26 hours pushes past dark. Poles help on sustained climbs above mile 19. Vest capacity for 2 liters minimum. Shoes matched to 80% alpine trail: lugs for mud, rock plate if the course turns technical after mile 37.
Race Day
Hold effort through mile 19. The field often splits on the first big climb after mile 37. Vrsic Pass high traverse and Mangart saddle exposure near mile 48 is where time is won or lost. Walk the steep pinches. Run the flats and gentle downhills. Crew at major aids: socks, calories, ice if hot. Transitions under 5 minutes when possible. Final third is 25 miles of fatigue management. Finish with reserve for the last descent.
Results
Julian Alps Trail Run finish lines.
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Sources (2)
- Field stats (2025): https://utmb.world/utmb-index/races/18649.julianalpsbyutmb120k.2025?page=1
- Course record (M): https://utmb.world/utmb-index/races/18649.julianalpsbyutmb120k.2019?page=1