It's a tall order to design a world class mountain-biking course. I always knew that. Then I interviewed Greg Martin. He's the course director for the USA Cycling Cross Country National Championships that were held in Sun Valley this past July. He laid out the specifics of building challenging terrain for me. In short, it's more work than you think.
Here's the dirt on everything that went into this year's course in Sun Valley. (And next week I'll have an interview up with Greg—stay tuned.)
USA Cycling Cross Country National Championships By the Numbers
180,000 Lbs. of rock used to create the boulder gardens