Arrowhead Trail profile.  Basically flat to rolling for the first 1/3, then real hills start aways before MelGeorge including a lot which force cyclists to dismount and trudge and skiers may be walking up too.  Serious hills climbing out of Elephant Lake, then it flattens for a bit until more big hills to the west of Lake Vermillion.  Final 20 miles are flat to finish.Have heard several numbers on total climbing of trail, likely ~7500ft.