The opening climbs: technical from mile one
There is no warm-up. From the Black Dome Trail trailhead you go straight into rock-strewn climbing, and the technical nature of the course announces itself immediately. This is not a course you ease into on smooth fire road before the real work starts. The real work starts at the gun.
Treat the first climbs as a preview of the whole day: rock scrambling, careful foot placement, and effort that has almost nothing to do with your flat-ground fitness. Runners who show up expecting a runnable 50-mile pace get an unpleasant surprise fast.