Joined: Jul 2002
Posts: 40,863
Likes: 3,116
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
It would be tough to make up much time in 4 miles no matter what you do. FWIW, I have about the same distance and the direct route takes 19-22 minutes regardless of whether I ride the 30lb beast or the 17lb race bike. It has more to do with the stoplights than anything else.