Most of the famous "rare mileage" routings (Techiapi Pass, Feather Canyon, UP Overland, etc.) are out west and therefore pretty hard for me to grab a ride on (not that I won't try to do so if the opportunity presents itself, but the time each way is a bit prohibitive). Are there any occasional/semi-common rare mileage bits either in the East/South or elsewhere more or less east of Chicago?