hmm is the poll for total a day or each way? I picked 2-4 hours assuming its a day. i also think it also matters what time of environment youll be commuting through (ie MUP or rural or urban areas, etc). Right now my commute takes from 50-60 minutes and is 32mi RT across most of Philadelphia. I think my cut off on the roads im on now would be ~20mi or so a way but it most of the ride was MUP where my brain didnt have to be constantly scanning for cars pulling out, pedestrians crossing, parrlellel parked cars' dooring me, etc, i think i would put up with more miles. Though MUPs that are highly congested arent much fun either...