I can ride and walk but not run. Old neck injury with permanently damaged C2. Any jolt can cause dizziness and blinding pain. Even riding on terrain that's too rough is painful.
I got a little too enthusiastic Friday when I discovered a utility easement in a field filled with yucca plants in bloom. In dim light they look eerie, like little ghosts hovering a few feet off the ground. I rode through to record some video with my helmet cam and shoot a few stills. But the utility road was really rough and I paid for it Friday night and all Saturday with aching neck and shoulders.
Next time I'll try with my comfort hybrid -- the long wheelbase, suspension fork and fatter tires should handle those easements pretty well. It's mostly flat or rolling open fields, but a mite bumpy for me.
But I'll ride again Sunday, if at all possible.