Check out this POV video from the most recent Thunder Rock 100 training weekend. It shows the last 50 miles of the course — and it spares none of the difficulties.
If you’re registered for the (sold-out) race and want to see firsthand what awaits, you can run the entire course this Friday – Sunday (April 11-13) with a group. The mileage will be broken into roughly 50-30-20. See the Facebook page or contact Randy Wharton, the race director, for details.