I ride single track at age 70, but do not do what the kids (30 yr olds) do. No features or jumps for me - recovery from a serious crash would take too long. I upgraded from an old KHS 500 with 26 in wheels to a Scott 940 full suspension with 29 inch. The bike is fast and I can keep up with many of the kids on flow type trails. I am wondering if my reaction time will eventually keep me from riding the way i am now. Meanwhile i will keep having fun. I went to Mulberry Gap (Elijay) mountain bike campground last December to ride the north GA mountain trails. I was slow but had fun!!!