5) Comfortably Numb , Whistler, British Columbia
The sign at the entrance “use at own risk” says it all. Comfortably Numb in British Columbia demands a great amount of skill and physical fitness. Very technical, and lots of steep descents and climbs make it not suitable for novices and even some intermediate bikers.
4) Porcupine Rim Mountain Bike Trail, Moab, Utah
As many mountain bikers could attest to, Porcupine Rim Trail in Moab, Utah is one of the most challenging and surely satisfying trails in the world. Its fast technical downhill runs make it hard to concentrate on turns and obstacles. The views and the scenery are a big bonus for riders.