Route map shows direction arrows, kilometre markers, aid stations and checkpoints. Satellite mode requires internet access. Tap a coloured marker to see its name and distance; use the +/− controls or pinch to zoom. Load the official GPX on your watch or phone for navigation on the day.
Hover or tap the profile for distance, elevation and gradient. Steepest 500 m: about 23% average on the climb to Bretagne Rock (km 13.9–14.4).
Pick a finish time. Arrival times are spread by effort, so climbs get more time and runnable descents less, rather than an even pace per km. They include short aid-station stops.
Each line is one finish target. The red line is the 6-hour cut-off pace: stay to the left of it.
Orange edge: km with more than 40 m of climbing. Green edge: km with more than 40 m of descent.
"At 6 h pace" is when a runner on track for the 13:00 cut-off reaches each station. It is a guide, not an official intermediate cut-off.
Longest gap: 10.4 km from Krismiskamp (AS#1) to Meulwater Kamp (AS#2). Leave AS#1 with full bottles. Expect to be out for roughly 1 hour (front runners) to nearly 3 hours (cut-off pace) on this leg, and it is followed by the hardest climb of the day.
Bring your own cup or soft flask. The Rock Ultra runs on Leave No Trace: there are no disposable cups at aid stations. Carry all your wrappers back to an aid station or the finish.