Mandala du Mont-Blanc by Raidlight 2027
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 - Mandala du Mont-Blanc by Raidlight · 2027
| Aid station | Cum. km | Cum. D+ | Seg. km | Seg. D+ | Seg. D- | Crew | Cut-off | Access |
|---|---|---|---|---|---|---|---|---|
| Arrivée | 150.8 | 7,335 m | 150.8 | 7,335 m | 7,335 m | — | Sun 12:00 AM |
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 Mandala du Mont-Blanc by Raidlight · 2027
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
Mandala du Mont-Blanc by Raidlight: 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 32h58 to 20h51, and the aid-station stop budget from 2h38 to 0h51. 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 320, the overall cut-off of 44h00 is no longer reachable at the estimated pace.
| UTMB® Index | Estimated time | Of which stops | Night hours | Carbs | Fluid | Sodium | Cut-off margin |
|---|---|---|---|---|---|---|---|
| 500 | 32h58 | 2h38 | 13 | 1,978 g | 23.1 L | 16,487 mg | +11h02 |
| 550 | 30h34 | 2h04 | 13 | 1,834 g | 21.4 L | 15,287 mg | +13h26 |
| 600 | 28h19 | 1h41 | 13 | 1,699 g | 19.8 L | 14,155 mg | +15h41 |
| 650 | 26h11 | 1h24 | 12.2 | 1,571 g | 18.3 L | 13,089 mg | +17h49 |
| 700 | 24h16 | 1h10 | 10.3 | 1,456 g | 17 L | 12,130 mg | +19h44 |
| 750 | 22h32 | 1h00 | 8.5 | 1,352 g | 15.8 L | 11,264 mg | +21h28 |
| 800 | 20h51 | 0h51 | 6.9 | 1,251 g | 14.6 L | 10,426 mg | +23h09 |
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.
In the 2027 ranking
Mandala du Mont-Blanc by Raidlight is 151 km and 7,335 m of elevation gain, that's 224 km-effort: category XXL, among 60 races in 2027. Its time limit of 44 h requires a minimum speed of 3.4 km/h: rank 26 out of 52 of the widest cut-off times in XXL.
XXL ultra-trails 2027: 210 km-effort and above
Similar effort in 2027
- Scenic Trail - K120 Ultra · 225 km-effort
- Arc of Attrition - Arc 100M · 226 km-effort
- 100 MILLAS SIERRAS DEL BANDOLERO by Trangoworld - 100 millas · 221 km-effort
Other trails worth preparing for
- THP winter - W100102 km · 5,306 m D+ · November 21, 2026
- ULTRA TRAIL TROUPES DE MARINE - 128KM131 km · 4,673 m D+ · November 21, 2026
- Nébian - UTNB - 8 boucles99 km · 4,457 m D+ · November 21, 2026
- Lyon SaintéLyon160 km · 5,278 m D+ · November 28, 2026
- Moncontour - Ultra Menestrail98 km · 3,386 m D+ · December 5, 2026
- Les Herbiers - La HOT du Père Noël135 km · 3,109 m D+ · December 19, 2026
- Les Courses du Père Noël - La HOT - circuit delestage 120km117 km · 2,350 m D+ · December 19, 2026
- UTDF - Ultra Trail Des Fontaines105 km · 4,271 m D+ · February 6, 2027
- Ultra Tour des Côtes d'Armor - 100 Km101 km · 1,529 m D+ · February 28, 2027
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 — Mandala du Mont-Blanc by Raidlight
Weather for Mandala du Mont-Blanc by Raidlight
The weather for Mandala du Mont-Blanc by Raidlight 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 Mandala du Mont-Blanc by Raidlight, hour by hour on the courseFrequently asked questions
How many checkpoints?
Mandala du Mont-Blanc by Raidlight 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?
Mandala du Mont-Blanc by Raidlight is 151 km long with 7335 m of elevation gain.
How long to finish?
With a UTMB Index of 600 (average runner), the estimated time is around 28h19 for Mandala du Mont-Blanc by Raidlight.
What's the weather forecast?
The weather for Mandala du Mont-Blanc by Raidlight 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 Mandala du Mont-Blanc by Raidlight?
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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