Julian Alps Trail Run by UTMB 2026
Julian Alps Trail Run by UTMB – Lake Bled 80K
Bled (Mala Zaka) → Kranjska Gora
Race guide
Updated 29 June 2026
The Julian Alps Trail Run by UTMB Lake Bled 80K is a point-to-point mountain race that carries you from the shores of Lake Bled at Mala Zaka all the way northwest to the alpine resort of Kranjska Gora — 80 kilometres of Slovenian mountain terrain with 3,602 metres of climbing and a high point of 2,166 metres. It is a race of two very distinct halves: approachable valley and forest running in the opening stretch, followed by increasingly exposed and technical alpine terrain as the course pushes deeper into the Julian Alps. The single mandatory cut-off is at the finish in Kranjska Gora by Day 05:00, so time management matters, but the course rewards runners who treat the first half as an investment rather than a race.
Course & Terrain Overview
Starting at Mala Zaka in Bled at 479 metres, the course unspools through the valleys and forested ridgelines of the Julian Alps before arriving at the major aid station in Žirovnica at 38 kilometres and 1,699 metres — roughly the midpoint both by distance and by character. From Žirovnica the route climbs hard, topping out at 2,166 metres before the long descent into Kranjska Gora at 814 metres. The terrain transitions from runnable valley trails and woodland singletrack in the first half to steeper, rockier alpine paths with genuine exposure in the second. Footing demands attention throughout: Slovenian mountain trails can be rooty and slippery in the valleys, and the high alpine sections involve loose rock and narrow ridgeline paths that require confident movement.
The Decisive Climbs and Where the Race Is Won or Lost
The climb to and from the high point of 2,166 metres in the second half of the race is the defining passage. By the time you leave Žirovnica at 38 kilometres, you have already accumulated meaningful elevation and several hours on your feet — how you managed that first half will determine everything that follows. The major climb out of Žirovnica up toward the high point is where races unravel for runners who went too hard too early: legs that burned through glycogen on the runnable early terrain hit the steep alpine ground with nothing left. The descent into Kranjska Gora from the high point, while a relief in elevation terms, is technical enough to punish fatigued quads — controlled descending technique and preserved leg strength from the first half are what allow you to actually move here rather than survival-shuffle to the finish.
How to Pace and Fuel This Race
The single most important tactical decision in the Lake Bled 80K is how you treat the opening 38 kilometres to Žirovnica. The valleys and forest trails feel inviting and fast — and that is the trap. Running those sections at a pace that feels comfortable, even social, is not leaving time on the table; it is building the account you will spend in the second half. Aim to arrive at Žirovnica feeling genuinely fresh: legs untrashed, energy reserves intact, hydration and calories on top. Use the major aid station there to eat properly, sort kit, and reset mentally before the real climbing begins. Fuelling should be proactive from the gun — don't wait until the alpine section to start eating. On the second half, break the remaining distance into manageable segments rather than staring at the full kilometres to go; a mental framework of 'two more climbs and I'm in Kranjska Gora' manages the psychological load far better than tracking raw distance. The cut-off is at the finish by Day 05:00, so build a buffer at Žirovnica and do not gamble it away on the descent.
Conditions to Expect
The Julian Alps sit in a zone where alpine weather can shift rapidly regardless of season. The high point at 2,166 metres is genuinely exposed, and afternoon thunderstorms are a real possibility on summer race days — wind, rain and a significant drop in temperature can arrive quickly on the upper ridges. Start the race with a waterproof layer accessible, not buried at the bottom of your pack. The valley sections around Bled and through the lower approach to Žirovnica are typically warmer and more sheltered, which creates a layering challenge: you may be warm in the early kilometres and cold on the high ground later. Trail surfaces in the valleys can be wet and rooty after rain, while the alpine rock above becomes genuinely slick. Night sections — depending on your finishing time — will require reliable headtorch lighting and an awareness that navigation demands more focus in the dark on unfamiliar Slovenian mountain trails.
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Checkpoints & cut-offs
✓ Course data verified against the official source (2026-07-05) · official source
0 km · 478 m · —
14.3 km · 554 m · —
26.8 km · 1432 m · —
31.7 km · 2166 m · —
43.9 km · 1435 m · Sat 21:00
60.6 km · 710 m · Sat 23:30
71.5 km · 753 m · —
78.9 km · 814 m · Sun 05:00
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