I do not mountain bike alone mostly because I am a clumsy fool and prone to slow-mo falls. Once of twice we have gone to the local beginner to intermediate trail and beat DH there so he catches up. The trail is very well traveled so I guess if I wrecked bad someone would be along at sometime. I know how to change a flat and other basic fixes. Plus as I found when I broke my seat post, it doesn't take that long to walk out of the trail.