One of our favorite places in Colo is near our home in Woodland Park (which is just a 25 min drive up a beautiful mountain pass from Colorado Springs)...Manitou Lake. We love riding the paved trail all the way from town to the lake...it is so beautiful.
One of our other favorites near Woodland Park is Rampart Reservoir...although there was some damage there from recent fires, we have wonderful memories of mountain biking around the reservoir - some of the trail is advanced, but oh so beautiful and FUN! Great campgrounds there, but not sure if the vegetation has grown back since the fires or not. We love kayaking the lake...water is a little colder than our Florida water!