PM jog. Two with tot. Dub. Those are just a few of the titles entered into my training log for the second run of a day. Doubles, you might be thinking, are limited to pros and serious runners who are ...

When I was in high school, my cross-country team began every school day with a three-to four-mile run and ended it with another run. We placed first or second at the state meet every year. The secret ...