There's a community college 5k from my house, where I occasionally take classes. The two buses there and back are on a fucked-up schedule that doesn't overlap conveniently. So sometimes I just say "fuck it," and walk home. It takes me just under an hour, at an easy pace, and it's only that slow due to all the traffic lights I have to wait at, and the fact that I'm towing a bag on wheels behind me.   If you rode a bike, I bet you could get that down under ten minutes depending on how many traffic lights there are and if there are hills.  You could carry your stuff on a rear rack with a set of panniers.