The film's protagonists are speed skaters. The competition scenes feature champions and medalists of the USSR, World, European, and Olympic championships: Ants Antson, Irina Egorova, Viktor Kosichkin, and Valentina Stenina.
| Actor | Role |
|---|---|
 Valentin AbramovNot listed | Not listed |
 Liliya AleshnikovaNot listed | Not listed |
 Aleksandr BelyavskiyNot listed | Not listed |
 Vladimir GusevNot listed | Not listed |
 Yelena RyabinkinaNot listed | Not listed |
 Vladimir SamoylovNot listed | Not listed |
 Vladimir TykkeNot listed | Not listed |
 Gennadi YudinNot listed | Not listed |
 Igor OkrepilovNot listed | Not listed |