I have finally gotten around to riding the whole way to work, 12 miles each way. The weather has been gorgeous here in chicagoland. I get to ride a while through the forest preserve. Today I was running a little behind and had to really crank. Covered the 12 miles in 41 minutes at 17 mph. That is pretty much the same time total it takes me to get to work when I drive my car half the time.