These days, a commute's 5-10mi (each way, depending). If there were more MUPs and greater availability of bike lanes on the roadways, it'd be a far nicer and safer ride.

Once was, several times weekly I would cycle just short of 25mi each way. Though practically none of that was in a bike lane or on a MUP. Oh, to be so young and injury-free as that. Ah, well.