Joined: Jul 2002
Posts: 40,863
Likes: 3,115
From: Sacramento, California, USA
Bikes: Specialized Tarmac, Canyon Exceed, Specialized Transition, Ellsworth Roots, Ridley Excalibur
I also have a 4 mile commute and just consider those to be recovery rides. Give yourself a little extra time to get to work and ride really, really, really easily. Like getting passed by little old ladies on beach cruisers. You want to spin the legs but not put any stress on the system.