Spraying Mud, Jumping Boulders: This Is Cyclocross (Video)

For those who have never been involved in cyclocross, the sport can be a little nebulous. The off-road bikes have skinny but knobby tires. There’s no suspension. And why are the participants always running with bikes on their shoulders?

Well, this video gets down to the nitty-gritty. Rider Chris Akrigg rips up some rugged forest trails in a five minute video aboard his Mongoose Selous , a to-be-released CX steed. —Sean McCoy