Deep in the heart of the MTB mecca of Moab, Utah is this hell-raising trail appropriately named Porcupine Rim.

Those looking for a technical ride will not be disappointed. Expect eight miles of dust road and spectacular canyon views before you career three miles down the sketchiest singletrack of your life. Think two-foot gaps, loose sandy sections and exposed cliffs that fall away into the Colorado River.

But it’s not the sheer drops that pose the most risk to riders – dehydration is the biggest killer on this trail. It is the desert after all, where temperatures often reach 38 °C. Back in 2005, a 15-year-old girl died from dehydration on a family bike ride here. So remember to take a lot of water with you!