UTMB cutoff calculator
Target finish to arrival at Saint-Gervais, Courmayeur, Champex, Vallorcine, and Chamonix. Buffer at every life base gate.
Night
16:00 start
You hit Courmayeur in the dark. Build buffer before Italy.
Vert
10,000 m gain
Linear pace math lies on this course. Use the full predictor for bands.
Train
Course DNA
Readiness against UTMB vert and night work.
Loading calculator…
Ultra Trail Du Mont-Blanc (UTMB)
Tightest gate
Saint-Gervais +39m
Comfortable margin at the tightest checkpoint.
Checkpoint buffer
| Checkpoint | Mi | Arrival | Cutoff | Buffer |
|---|---|---|---|---|
| Les Houches | 5.0 | 0:45:36 | 1:30:00 | +44m |
| Saint-Gervais | 13.0 | 2:51:07 | 3:30:00 | +39m |
| Les Contamines | 19.3 | 3:55:08 | 5:30:00 | +1h 35m |
| La Balme | 24.9 | 5:02:15 | 7:30:00 | +2h 28m |
| Refuge Croix du Bonhomme | 28.0 | 6:01:51 | 8:49:48 | +2h 48m |
| Les Chapieux | 31.7 | 6:58:35 | 10:15:00 | +3h 16m |
| Lac Combal | 41.0 | 9:14:39 | 13:30:00 | +4h 15m |
| Col Checrouit | 47.8 | 10:49:49 | 16:00:00 | +5h 10m |
| Courmayeur | 50.3 | 11:30:30 | 17:15:00 | +5h 44m |
| Refuge Bertone | 53.4 | 12:28:45 | 18:30:00 | +6h 1m |
| Refuge Bonatti | 57.8 | 13:16:12 | 20:00:00 | +6h 44m |
| Arnouvaz | 61.5 | 13:59:48 | 22:00:00 | +8h |
| La Fouly | 70.2 | 16:02:47 | 25:45:00 | +9h 42m |
| Champex-Lac | 78.3 | 17:37:03 | 29:00:00 | +11h 23m |
| Plan de l'Au | 83.3 | 18:36:25 | 31:30:00 | +12h 54m |
| Trient | 87.6 | 19:40:25 | 33:45:00 | +14h 5m |
| Vallorcine | 94.4 | 21:31:07 | 37:30:00 | +15h 59m |
| La Flegere | 102.5 | 23:11:05 | 42:30:00 | +19h 19m |
| Finish Chamonix | 106.3 | 24:00:00 | 46:30:00 | +22h 30m |
Selected course: Ultra Trail Du Mont-Blanc (UTMB)
Cutoff math is linear. The full aid station planner adds km-effort and hiking flags.