Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME 2026
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.
Cut-off times and crew - Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME · 2026
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Arrivée | 42.0 | 4,528 m | 42.0 | 4,528 m | 4,528 m | — | Sat 06:30 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.
Elevation profile
The course and its aid stations
Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME: 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 9h32 to 6h10, and the aid-station stop budget from 0h21 to 0h08. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
Below a UTMB® Index of roughly 430, the overall cut-off of 11h30 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 9h32 | 0h21 | — | 572 g | 6.7 L | 4,764 mg | +1h58 |
| 550 | 8h29 | 0h16 | — | 509 g | 5.9 L | 4,242 mg | +3h01 |
| 600 | 7h56 | 0h14 | — | 476 g | 5.6 L | 3,964 mg | +3h34 |
| 650 | 7h24 | 0h12 | — | 444 g | 5.2 L | 3,700 mg | +4h06 |
| 700 | 6h54 | 0h10 | — | 414 g | 4.8 L | 3,453 mg | +4h36 |
| 750 | 6h33 | 0h09 | — | 393 g | 4.6 L | 3,277 mg | +4h57 |
| 800 | 6h10 | 0h08 | — | 370 g | 4.3 L | 3,079 mg | +5h20 |
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
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- ULTRA PIGLIONE TRAIL57 km · 3,760 m D+ · October 18, 2026
- LONG PIGLIONE TRAIL37 km · 2,405 m D+ · October 18, 2026
- Panoramic Trail - 30k29 km · 2,188 m D+ · October 18, 2026
- Valle dei Segni Wine Trail - 55K57 km · 3,362 m D+ · October 24, 2026
- Bellagio Skyrace28 km · 1,926 m D+ · October 25, 2026
- TRAIL MONTE CASTO - 44 KM45 km · 1,968 m D+ · October 25, 2026
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 — Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME
Weather for Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME
The weather for Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME 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 Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME, hour by hour on the courseFrequently asked questions
How many checkpoints?
Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME has 1 checkpoint: 1 checkpoint with undocumented contents. Details are in the two tables above.
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?
Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME is 42 km long with 4528 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 7h56 for Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME.
What's the weather forecast?
The weather for Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME 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 Trail Grigne Sud - TGS Extreme - TGS Sprint - Trail Grigne Sud EXTREME?
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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