My second-ever road race was a St. Patrick’s Day 5K a couple of towns over, held on a sunny—and thank goodness not too cold! —spring morning. The course led through residential streets that had been closed off for the run, similar to those I’d trained on in and around my neighborhood. But now, for the first time, I didn’t have to stay on sidewalks and shoulders. I could run wherever I chose within the width of the lane. Not being at the front of the pack by a long shot, I had ample lateral wiggle room.