The Grand-Further Mountain Run is roughly 25km on 99% singletrack that takes you up and over Grandfather Mountain 2 times. The only part of the course that’s not singletrack is the first 0.15 miles of uphill road running. So, naturally, many people start out running pretty hard with the goal of reaching the singletrack before the rest of the field and avoiding getting trapped in a position that could potentially hold them back.