For four years, Joe Robinson and Lance Woods ran the streets of Detroit. Robinson took the east side where he resided, and Woods had the west side. But they never ran together. They didn’t know each other. Though both lifelong Detroiters, their paths never crossed. Not in running, and not in their careers. Woods worked in youth development in the local school system while Robinson operated as a young, hip hip entrepreneur with his company APX Management, which works with up-and-coming rappers in the city. Yet both had a similar vision for their home and the African-American community: a running...