If you want to bike then hike and get away from larger crowds, a relatively flat trip is to pedal from the Carbon entrance up to Ipsut Creek, then hike up to the Carbon Glacier and the suspension bridge. The previous suggestion (Klapatche Ridge and St. Andrews Park) is excellent and more athletic. Also off the West Side Road is Gobbler's Knob. One of my favorites, featuring some cross-country travel, is to hike out of Mowich Lake to Knapsack Pass, then around Mt. Pleasant, through Spray Park and back to Mowich. Excellent loop.