Flash Trail Challenge Autumn 2026
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 6 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.
Cut-off times and crew - Flash Trail Challenge Autumn · 2026
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 | A1：ファミリーマート長田丸山店エイド（約10.5km地点）km 10.2 | A2：再度公園エイド（約18km地点）km 18.5 | A3：六甲ビジターセンターエイド（31.5km地点）km 31.4 | A4：六甲ビジターセンターエイド（約46km地点）km 47.0 | A5：再度公園エイド（約58km地点）km 60.2 | A6：ファミリーマート長田丸山店エイド（約67km地点）km 68.5 |
|---|---|---|---|---|---|---|
| Water | ✕ | ✕ | ✕ | ✕ | ✕ | ✕ |
| Brand products | ✕ | ✕ | ✕ | ✕ | ✕ | ✕ |
Elevation profile
The course and its aid stations
Flash Trail Challenge Autumn: 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 16h18 to 10h01, and the aid-station stop budget from 0h55 to 0h19. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium |
|---|---|---|---|---|---|---|
| 500 | 16h18 | 0h55 | 10 | 978 g | 11.4 L | 8,150 mg |
| 550 | 15h11 | 0h46 | 10 | 911 g | 10.6 L | 7,592 mg |
| 600 | 13h55 | 0h38 | 9.9 | 835 g | 9.7 L | 6,956 mg |
| 650 | 12h35 | 0h31 | 8.6 | 755 g | 8.8 L | 6,293 mg |
| 700 | 11h40 | 0h26 | 7.7 | 700 g | 8.2 L | 5,837 mg |
| 750 | 10h56 | 0h22 | 6.9 | 656 g | 7.7 L | 5,470 mg |
| 800 | 10h01 | 0h19 | 6 | 601 g | 7 L | 5,010 mg |
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.
Other trails worth preparing for
- Hiroshima Ultra-Trail by UTMB® - HIROSHIMA 100K®98 km · 5,584 m D+ · April 10, 2027
- Hiroshima Ultra-Trail by UTMB® - HIROSHIMA 50K®50 km · 2,735 m D+ · April 10, 2027
- Kagaspa Trail Endurance 100 - KAGASPA 100K97 km · 4,985 m D+ · June 19, 2027
- Kagaspa Trail Endurance 100 - KAGASPA 50K57 km · 2,445 m D+ · June 20, 2027
Sources and method
- Time projection — les temps par cote sont repris des passages réels des coureurs de chaque tranche sur les éditions précédentes de cette course, arrêts aux ravitaillements compris. Aucune formule n'intervient tant que ces résultats existent.
- 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 — Flash Trail Challenge Autumn
Weather for Flash Trail Challenge Autumn
The weather for Flash Trail Challenge Autumn 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 Flash Trail Challenge Autumn, hour by hour on the courseFrequently asked questions
How many checkpoints?
Flash Trail Challenge Autumn has 7 checkpoints: 6 aid stations and 1 checkpoint with undocumented contents. Details are in the two tables above.
What's the longest segment without aid?
The one leading to A4：六甲ビジターセンターエイド（約46km地点）: 15.7 km and 424 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?
Flash Trail Challenge Autumn is 79 km long with 4287 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 13h55 for Flash Trail Challenge Autumn.
What's the weather forecast?
The weather for Flash Trail Challenge Autumn 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 Flash Trail Challenge Autumn?
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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