I am thinking about possibly finally biking instead of driving for my commute, but I am reluctant since it is pretty long. Before giving it a shot I wanted to hear what long commutes you guys have.

If you don't have a long commute, what would be your cut-off point?

Also, what type of ride is it? for me it would be very hilly with very populated narrow roads. I am willing to do it after all I have read on these forums.