The locals' escape from Rally traffic — Nemo Road south into Rapid City, then Norris Peak Road back through pine forest with almost nobody on it.
Intermediate. Sustained twisty riding with elevation change. Nothing scary, but you're on the throttle for two hours straight — pace yourself.
Fuel in Sturgis. Nemo Guest Ranch has no pump; nearest re-fuel is Rapid City or back in Sturgis.
Nemo Guest Ranch mid-ride for a burger and a beer. Colonial House in Rapid City if you extend.
Mid-morning any day of Rally — you'll leave the crowds behind five miles in.