5-7 miles is sort of pokey for a long distance, but that is about how fast i go up hills. Therefore, for me, going slow isn't something new. I use my bike to commute and I think it adds way more varibles than driving a car does. So I add 15-20 minutes more than I think I will need. Also it gives me leeway if I get a flat or need a coffee break or get terribly lost. That said sometimes I jsut can't find the extra time...