Race pace

UTMB - Ultra-Trail du Mont-Blanc pace calculator

UTMB 171K · Fri, August 28, 2026 · 172.4 km · 10069 m D+

Race-day pacing plan

Set a finish target and stopped-time budget, then use the GPX-derived split table for where the course should feel slow or runnable.

Official cutoff

46h 30

Hours Minutes Stopped min

Clock pace

13:14 / km

Finish time including stops.

Moving pace

12:58 / km

What your watch needs while moving.

Effort pace

8:11 / km

Uses climb and descent adjusted distance.

Cutoff buffer

+8h 30

At the selected finish target.

Course from GPX

172.4 km

10069 m D+ · 0 m D-

Adjusted workload

273.1 effort-km

100 m climb = 1 km; 300 m descent = 1 km.

Hardest block

Split plan will appear below.

Five-kilometer blocks from the GPX, weighted by climb and descent load.

Start 18:00