Julian Alps Trail Run - SKY TRAIL 50K 2025
The forecast arrives five days before the start.
Here you'll find the elevation profile and an estimated finish time based on your UTMB Index.
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 · 2025
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Valvasorjev | 5.2 | 0 m | 5.2 | 589 m | 47 m | — | — | — |
| Sedlo Suha | 17.6 | 0 m | 12.3 | 940 m | 684 m | — | Fri 05:30 PM | — |
| Dovje | 34.7 | 0 m | 17.2 | 763 m | 1,487 m | — | Fri 06:00 PM | — |
| Gozd Martuljek | 45.6 | 0 m | 10.9 | 363 m | 321 m | — | — | — |
| Kranjska Gora | 53.1 | 0 m | 7.5 | 404 m | 343 m | — | Fri 10:30 PM | — |
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
Aid station contents not documented.
La feuille de ton assistance pour Julian Alps Trail Run - SKY TRAIL 50K · 2025
Les règles d'assistance de cette course ne sont pas encore connues : tu marqueras tes rendez-vous toi-même.
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 8h27 to 5h09. 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 | 8h27 | — | 507 g | 5.9 L | 4,225 mg | +6h02 |
| 550 | 7h44 | — | 464 g | 5.4 L | 3,867 mg | +6h45 |
| 600 | 6h59 | — | 419 g | 4.9 L | 3,492 mg | +7h30 |
| 650 | 6h20 | — | 380 g | 4.4 L | 3,167 mg | +8h09 |
| 700 | 5h47 | — | 347 g | 4 L | 2,892 mg | +8h42 |
| 750 | 5h27 | — | 327 g | 3.8 L | 2,725 mg | +9h02 |
| 800 | 5h09 | — | 309 g | 3.6 L | 2,575 mg | +9h20 |
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.
Edition 2025 measurements
Edition 2025 measured 50 km, vs 53.1 km for this one: its times aren't included here.
See segment-by-segment analysis of Julian Alps Trail Run - SKY TRAIL 50KOther trails worth preparing for in France
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- 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 checkpoints with undocumented contents. Details are in the two tables above.
What distance and elevation gain?
Julian Alps Trail Run - SKY TRAIL 50K is 53 km long with 3059 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 6h59 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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