For some, running is a cornerstone in their lives. To those individuals, there is an unquenchable need to run on roads, trails and track. They cannot explain it, but that does not matter. Running is who they are. It is for them The Unforgiving Line is written. Blending past and present, the glorious history of distance running is woven into the tale. Mac, a running warrior from a past era, cannot erase his failure at the worst of times: the 1968 Olympic trials fifteen-hundred meters. D.J., a talented but emotionally fractured sixteen-year old, carries scars garnered from a troubled home life. Mac and D.J. form an unlikely pairing, but each carries the other on a path that encounters rejection, failure, and broken dreams in the quest of finding love and redemption. The Unforgiving Line delivers through the final stride.