Singletrack refers to a path that remains sufficiently narrow for a single person to ride a bike or run. It may serve for mountain biking, trail running, or off-road triathlon.
Singletrack trails consist of thin sections with roots, rocks, steep corners, and drops. They differ from doubletrack or fire roads, which have a larger width and are smoother in texture. The trails test your balance, handling, and pace, and usually require a strategy for passing or being passed. For riders in need of building endurance, singletrack is a challenge that requires your complete attention.