Slate Trail Ultra 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 9 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 - Slate Trail Ultra · 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 | Llanberis - Padarn Hotelkm 21.7 | Nantlle - Poblado Coffikm 37.6 | Beddgelert - Llewelyn Hotelkm 55.3 | Blaenau Ffestiniog - Y Ganolfan Hallkm 73.6 | Cwm Penmachno - Shiloh Hallkm 95.8 | Betws-y-Coed - St Mary's Churchkm 109.5 | Ogwen Valley - Gwen Gof Uchafkm 124.8 | Bethesda - Llys Dafyddkm 136.7 | Finishkm 147.0 |
|---|---|---|---|---|---|---|---|---|---|
| Water | available | available | available | available | available | available | available | available | available |
| Hot meal | unavailable | unavailable | available | available | available | available | available | unavailable | available |
La feuille de ton assistance pour Slate Trail Ultra · 2026
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
Slate Trail Ultra: 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 23h46 to 14h31, and the aid-station stop budget from 1h44 to 0h35. The longer the race, the more stops weigh: this is time you should plan to spend standing still, not only running.
Source
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium |
|---|---|---|---|---|---|---|
| 500 | 23h46 | 1h44 | 9.8 | 1,426 g | 16.6 L | 11,884 mg |
| 550 | 22h02 | 1h26 | 8 | 1,322 g | 15.4 L | 11,017 mg |
| 600 | 20h15 | 1h11 | 6.3 | 1,215 g | 14.2 L | 10,121 mg |
| 650 | 18h35 | 0h59 | 4.6 | 1,115 g | 13 L | 9,293 mg |
| 700 | 16h56 | 0h49 | 2.9 | 1,016 g | 11.9 L | 8,467 mg |
| 750 | 15h39 | 0h41 | 1.7 | 939 g | 11 L | 7,823 mg |
| 800 | 14h31 | 0h35 | 1 | 871 g | 10.2 L | 7,257 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
- North Coast 110170 km · 4,705 m D+ · November 7, 2026
- Winter 5588 km · 2,006 m D+ · December 5, 2026
- Arc of Attrition - Arc 100M173 km · 5,318 m D+ · January 22, 2027
- Ultra-Trail Snowdonia - Eryri 100M164 km · 9,356 m D+ · May 14, 2027
- Eryri by UTMB® - Eryri 100M®164 km · 9,356 m D+ · May 14, 2027
- Ultra-Trail Snowdonia - Eryri 100K107 km · 5,518 m D+ · May 15, 2027
- Eryri by UTMB® - Eryri 100K®108 km · 5,884 m D+ · May 15, 2027
- Skyline Scotland by UTMB® - Grand Tour of The Ben 100K®91 km · 2,811 m D+ · September 18, 2027
- Centurion A100158 km · 1,087 m D+ · October 17, 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 — Slate Trail Ultra
Weather for Slate Trail Ultra
The weather for Slate Trail Ultra 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 Slate Trail Ultra, hour by hour on the courseFrequently asked questions
How many checkpoints?
Slate Trail Ultra has 9 checkpoints: 6 aid stations and 3 water points. Details are in the two tables above.
What's the longest segment without aid?
The one leading to Cwm Penmachno - Shiloh Hall: 22.2 km and 760 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?
Slate Trail Ultra is 147 km long with 3666 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 20h15 for Slate Trail Ultra.
What's the weather forecast?
The weather for Slate Trail Ultra 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 Slate Trail Ultra?
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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