This is an amazing well marked trail that is mostly paved with options to take dirt excursions=loops off of it that come back on. Rode on it from Aspen to Basalt which is only 18 miles and then took the bus back which does accommodate bikes. The trail goes all the way to Glenwood Springs or visa versa from Aspen. The bus system in this area is incredible with buses running frequently between towns. So you can go as far as you want and take the bus back.