The history of the Boston Marathon from its humble origins starting with only 15 runners, to the first female runners, through the tragedy in 2013, and ultimately the triumph of 2014.
| Actor | Role |
|---|---|
 Matt DamonNarrator (voice) | Narrator (voice) |
| RRobert de CastellaSelf | Self |
| MManzie JonesGerald Jones | Gerald Jones |
 Rosa MotaSelf | Self |
| BBill RodgersSelf | Self |
| JJoan Benoit SamuelsonSelf | Self |