Colorado’s Bustang carries bikes. Ride it up into the mountains and ride back down. The hard direction is the one with a diesel engine. Pick a stop for road, gravel and mountain bike routes to Denver, plus day rides from the stop itself.
Tap a stop for rides. Greyed stops are on the line but don’t have routes yet.
Bustang's published limit is two bikes on the rack, first-come first-served, with no reservations. In practice the under-bus luggage bay takes more: riders regularly get three or four bikes on a mountain run. Mountain bikes go in the bay with the front wheel off; gravel bikes usually fit underneath as-is, wheels on.