Grande Trail Serra D'Arga - GTSA 100k 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 - Grande Trail Serra D'Arga - GTSA 100k · 2026
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Arrivée | 100.6 | 4,413 m | 100.6 | 4,413 m | 4,156 m | — | Sat 08:00 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
Grande Trail Serra D'Arga - GTSA 100k: 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 19h49 to 12h11, and the aid-station stop budget from 1h07 to 0h23. 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 445, the overall cut-off of 22h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 19h49 | 1h07 | 9 | 1,189 g | 13.9 L | 9,909 mg | +2h11 |
| 550 | 18h20 | 0h55 | 9 | 1,100 g | 12.8 L | 9,169 mg | +3h40 |
| 600 | 16h32 | 0h45 | 9 | 992 g | 11.6 L | 8,269 mg | +5h28 |
| 650 | 14h54 | 0h36 | 9 | 894 g | 10.4 L | 7,449 mg | +7h06 |
| 700 | 13h54 | 0h31 | 9 | 834 g | 9.7 L | 6,949 mg | +8h06 |
| 750 | 13h08 | 0h27 | 9 | 788 g | 9.2 L | 6,570 mg | +8h52 |
| 800 | 12h11 | 0h23 | 9 | 731 g | 8.5 L | 6,088 mg | +9h49 |
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
- V Trail Demonios do Lizandro - Ultra Trail 100K102 km · 3,112 m D+ · November 6, 2026
- Sao Vicente - Ultra X 60 Madeira63 km · 3,126 m D+ · November 7, 2026
- Sao Vicente - Ultra X 110 Madeira117 km · 5,876 m D+ · November 7, 2026
- EPIC Trail Run Azores - EPIC10099 km · 5,039 m D+ · December 4, 2026
- São Vicente - Ultra Race106 km · 5,519 m D+ · December 5, 2026
- EPIC Trail Run Azores - EPIC6063 km · 2,693 m D+ · December 5, 2026
- Oh Meu Deus - Oh Meu Deus 100K94 km · 5,289 m D+ · May 1, 2027
- AXtrail Ultra Trail Aldeias Do Xisto - Utax103 km · 7,548 m D+ · October 16, 2026
- Trail Abrantes 100 - 100km104 km · 2,941 m D+ · October 10, 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 — Grande Trail Serra D'Arga - GTSA 100k
Weather for Grande Trail Serra D'Arga - GTSA 100k
The weather for Grande Trail Serra D'Arga - GTSA 100k 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 Grande Trail Serra D'Arga - GTSA 100k, hour by hour on the courseFrequently asked questions
How many checkpoints?
Grande Trail Serra D'Arga - GTSA 100k 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?
Grande Trail Serra D'Arga - GTSA 100k is 101 km long with 4413 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 16h32 for Grande Trail Serra D'Arga - GTSA 100k.
What's the weather forecast?
The weather for Grande Trail Serra D'Arga - GTSA 100k 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 Grande Trail Serra D'Arga - GTSA 100k?
In 2 minutes, RAVIT generates your complete plan: segment-by-segment time, carbs, water and sodium at every aid station, printable roadbook.
No card required · Instant results