Font Size Male and female gender divisions are seen as far too restrictive in the Philadelphia distance running scene. The solution? A famous half-marathon is re-inventing itself by adding a non-binary division to the competition. And encouraging this to become a trend nationally. The Philadelphia Distance Run (PDR) used to be one of America’s premiere distance races, drawing Olympic caliber runners. It was considered the world’s fastest half-marathon, and world records were set there by men and women. For the past decade, it was known as the Rock 'n' Roll Philadelphia Half Marathon. It’s returning Sept. 19 as the PDR and adding a non-binary division, to make the race as inclusive as possible, reports Philadelphia ABC News’ George Solis.