My road/cross bike is a 2011 Specialized Tricross Disc Apex, and my Mountain setup is a 1992 Klein Rascal Rock Shox, Shimano XT. I ride road and we have 100+ miles of crushed limestone rails to trails about 2 miles from my front door, so I needed the Tricross to conquer both surfaces.
Riding the Tour de Cure Madison, WI 50k
and the Tour de Cure Twin Cities, MN 100k
looking for a 100 mile event as well