Dewey Decimal Dash ~ 5K & Fun Run/Walk

Dewey Decimal Dash ~ 5K & Fun Run/Walk takes place in Haverford Township, Pennsylvania, on November 7, 2026. The 5K goes first at 8:00 a.m. over 3.1 miles, and the one-mile walk/run follows five minutes later at 8:05 a.m., a library-themed event with two formats to choose between.

The tight gap between starts is practical: race the 5K while someone else takes the mile, and you will both be done inside the same half hour. Neither distance demands a long build. For the 5K, four to six weeks of running three times a week is a realistic path from nothing to a comfortable finish, while the mile is short enough to enter on current fitness. Early November mornings are cold, so warm up before the gun rather than in the first half mile.