Singletrack trails are approximately bike-width in dimension, contrasting with wider double-track and fire roads. They’re the backbone of mountain biking.
Good singletrack may include technical rocky sections, berms (banked turns), switchbacks, hills, drops, and jumps. The width forces riders into committed lines and creates the flow that makes mountain biking addictive.
Building singletrack that lasts in Central Texas means dealing with limestone, root networks, and flash flood drainage — which is where proper trail design separates rideable trails from erosion gullies.