A street smart runner develops an intense rivalry with an equally ambitious wealthy young athlete.
| Actor | Role |
|---|---|
 Lenora CrichlowShania | Shania |
 Lily JamesLisa Temple | Lisa Temple |
 Lorraine BurroughsTrix | Trix |
 Lashana LynchBelle | Belle |
 Rupert GravesDavid Temple | David Temple |
 Phil DavisBrian | Brian |
 Tiana BenjaminTara | Tara |
 Dominique TipperSarah | Sarah |
 Bradley JamesCarl | Carl |
 Noel ClarkeTom | Tom |
| JJake PenningtonLeo Temple | Leo Temple |
| HHannah FranksonRachel | Rachel |
 Emma HandyGB Training Centre Official | GB Training Centre Official |
 Margherita TaylorRadio DJ | Radio DJ |
 Emma FieldingEllie Temple | Ellie Temple |
 Eva DagooPress (uncredited) | Press (uncredited) |
 Emma-Louise PatonRelay Team: Ukraine | Relay Team: Ukraine |
| JJason LewisDarren | Darren |
 Paul BlackwellPaparazzi | Paparazzi |
 Daniel FrancisSean Warren | Sean Warren |