Julian Alps Trail Run - SKY TRAIL 50K 2027
The forecast arrives five days before the start.
Here you'll find the elevation profile, an estimated finish time based on your UTMB Index and details of the 5 aid stations to plan your nutrition and hydration segment by segment.
What's your time based on your UTMB?
Times estimated by the RAVIT model, learned from real ultra-trail finish times. Enter your UTMB Index (utmb.world) to get a personalized estimate.
Predicted race time based on your UTMB Index® · smoothed times achieved by runners at your level in past editions
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Cut-off times and crew - Julian Alps Trail Run - SKY TRAIL 50K · 2027
Data from the official race rules, checked for every edition. The race rules prevail. Positions are interpolated along the GPX track and are a guide, not official course marking.
What you'll find at each aid station
| Product | Valvasorjev dom pod Stolomkm 5.2 | Sedlo Suhakm 19.9 | Dovjekm 36.6 | Gozd Martuljekkm 47.5 | Kranjska Gorakm 55.0 |
|---|---|---|---|---|---|
| Water | available | available | available | available | available |
| Brand products · Näak | available | available | available | available | unavailable |
| Hot meal | unavailable | unavailable | unavailable | unavailable | available |
La feuille de ton assistance pour Julian Alps Trail Run - SKY TRAIL 50K · 2027
Ton assistance peut te voir à ces postes. Ton plan RAVIT y met tes heures, ce qu'elle te tend et la route pour y aller.
Recto, verso et planche d'étiquettes, en PDF : l'exemple d'une coureuse de l'UTMB.
Elevation profile
The course and its aid stations
Julian Alps Trail Run - SKY TRAIL 50K: times, aid-station stops and fuelling needs by UTMB® Index
Between a UTMB® Index of 500 and 800, the estimated finish time on this race runs from 8h46 to 5h20. These times include aid-station stops: they come from real durations between two timing points, and this race's timing does not measure stops separately.
Source| UTMB® Index | Estimated time | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|
| 500 | 8h46 | — | 526 g | 6.1 L | 4,383 mg | +4h44 |
| 550 | 8h00 | — | 480 g | 5.6 L | 4,000 mg | +5h30 |
| 600 | 7h14 | — | 434 g | 5.1 L | 3,617 mg | +6h16 |
| 650 | 6h34 | — | 394 g | 4.6 L | 3,283 mg | +6h56 |
| 700 | 5h59 | — | 359 g | 4.2 L | 2,992 mg | +7h31 |
| 750 | 5h39 | — | 339 g | 4 L | 2,825 mg | +7h51 |
| 800 | 5h20 | — | 320 g | 3.7 L | 2,667 mg | +8h10 |
Figures based on 60 g of carbohydrate, 700 mL of fluid and 500 mg of sodium per hour, "average" preparation and mild conditions (15–25 °C). Above 25 °C, count on roughly 900 mL/h and 700 mg/h. Carbohydrate intake is trained: 60 g/h is a floor, 90 g/h assumes a glucose-fructose blend and a gut used to it.
Measured on the 2026 edition: the field checkpoint by checkpoint
1,193 starters, 4.5% DNF rate, 5 timed checkpoints.
| Segment | km | Median | Middle half | Measured | Median passage | Still ranked |
|---|---|---|---|---|---|---|
| Žirovnica (lake) - Start → Valvasorjev | 5.2 | 49 min | 44 min – 53 min | 1,189 | 49 min | 1,192 |
| Valvasorjev → Sedlo Suha | 20 | 2 h 41 | 2 h 20 – 3 h 06 | 1,158 | 3 h 31 | 1,180 |
| Sedlo Suha → Dovje | 36.6 | 2 h 48 | 2 h 29 – 3 h 11 | 1,047 | 6 h 21 | 1,169 |
| Dovje → Gozd Martuljek | 47.4 | 1 h 48 | 1 h 34 – 2 h 02 | 938 | 8 h 14 | 1,143 |
| Gozd Martuljek → Kranjska Gora | 54.8 | 1 h 10 | 1 h 02 – 1 h 20 | 1,040 | 9 h 15 | 1,139 |
“Median passage” is elapsed time from the start, not a clock time: the clock time depends on the edition.
Where runners drop out. Dovje (26) · Valvasorjev (12) · Sedlo Suha (11) out of 54 total DNFs.
RAVIT record from the official timing of the 2026 edition, data from September 28, 2026.
SourceIn the 2027 ranking
Julian Alps Trail Run - SKY TRAIL 50K is 55 km and 3,051 m of elevation gain, that's 85 km-effort: category M, among 124 races in 2027. Its time limit of 13 h 30 requires a minimum speed of 4.1 km/h: rank 43 out of 112 of the widest cut-off times in M.
M trails 2027: 75 to 114 km-effort
Similar effort in 2027
- Arosa Trailrun - AT54 · 85 km-effort
- Wildstrubel - Wild 55 Adelboden · 85 km-effort
- Ultra Trail Whistler - 50K · 85 km-effort
Other trails worth preparing for
- Izola - Obala Trail – 35 km35 km · 967 m D+ · November 7, 2026
- Izola - Obala Ultra Trail – 64 km64 km · 2,101 m D+ · November 7, 2026
- Julian Alps Trail Run - LAKE BLED 80K79 km · 4,270 m D+ · September 18, 2027
- Mojstrana - Triglav Lakes Race41 km · 2,272 m D+ · August 21, 2026
- Mojstrana - Triglav Trail Race67 km · 3,190 m D+ · August 21, 2026
Julian Alps Trail Run - SKY TRAIL 50K over the years
Sources and method
- Time projection — times by UTMB Index are taken from the actual splits of runners in each level band on previous editions of this race, aid station stops included. No formula is used as long as these results exist.
- Trail nutrition — hourly targets for carbohydrate, fluid and sodium follow the commonly accepted ultra-endurance guidance. La Clinique du Coureur — Fuelling in trail running
- Course, aid stations and cut-offs — taken from the event's official rules, which prevail in case of any discrepancy. Official site — Julian Alps Trail Run - SKY TRAIL 50K
Weather for Julian Alps Trail Run - SKY TRAIL 50K
The weather for Julian Alps Trail Run - SKY TRAIL 50K will appear here as soon as the forecast models reach that date, around five days before the start: feels-like temperature, rain, snow, wind and storms, section by section and at your passage time.
Detailed weather for Julian Alps Trail Run - SKY TRAIL 50K, hour by hour on the courseFrequently asked questions
How many checkpoints?
Julian Alps Trail Run - SKY TRAIL 50K has 5 checkpoints: 5 aid stations. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Dovje: 16.7 km and 753 m elevation gain. That's the one to load up for first.
How do I find the exact location of an aid station?
The Google Maps icon in the “Access” column opens the aid station's location: handy for planning your crew's routes.
What distance and elevation gain?
Julian Alps Trail Run - SKY TRAIL 50K is 55 km long with 3051 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 7h14 for Julian Alps Trail Run - SKY TRAIL 50K.
What's the weather forecast?
The weather for Julian Alps Trail Run - SKY TRAIL 50K will be published on this page around five days before the start, once the forecast models reach the race date. It will be detailed section by section: feels-like temperature, rain, snow, wind and storms.
Want to stack the odds in your favor for Julian Alps Trail Run - SKY TRAIL 50K?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
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