Race pace

Grindstone Trail Running Festival by UTMB pace calculator

100M · Fri, September 18, 2026 · 167.4 km · 6400 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

36h 00

Hours Minutes Stopped min

Clock pace

10:58 / km

Finish time including stops.

Moving pace

10:42 / km

What your watch needs while moving.

Effort pace

7:44 / km

Uses climb and descent adjusted distance.

Cutoff buffer

+5h 24

At the selected finish target.

Course from GPX

167.4 km

6400 m D+ · 0 m D-

Adjusted workload

231.4 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