A tough race requiring navigational skills particularly in poor visibility. A reconnaissance is recommended. The route is flagged from the start to the foot of the gully (1.3km) and from CP6 to the finish (0.5km). The flagged sections are compulsory. The rest of the route is unmarked and offers the possibility of route choices.

The race starts and finishes at the disused Arenig quarry, elevation 350m. The route follows an uphill quarry track for 1200m to a height of 470m. It then crosses a stone wall and climbs up a steep gully and emerges onto a grassy hillside. The gully can be avoided by skirting round the crags to the right.

NOTE: Runners who arrive at CP2 after one hour and ten minutes (1:10) from the start of the race will be instructed to proceed to CP4 and so do a short version of the race.

Equipment and emergency food are mandatory as outlined in the WFRA website.