Cast
Пётр Репнин
member of the academic Council (uncredited)
Александр Леньков
Lyonya
Наталья Кустинская
Alyona
Александр Грузинский
Gervasiy Fedoseyevich
Георгий Куликов
Nikolai Lvovich
Juri Zurilo
Marko
Филимон Сергеев
Kirill
Леонид Чубаров
trainer
Александр Ханов
Aleksei Ivanovich
Кларина Фролова
Alyona's grandmother
Николай Толкачёв
member of the academic Council
Thomas Holtzmann
Self (uncredited)
Алексей Бахарь
pilot (uncredited)
Аркадий Цинман
speaker at the academic Council in MAI
Владимир Липпарт
member of the academic Council
Eugeny Agurov
head of the American delegation
Семён Бардин
member of the academic Council (uncredited)
Ольга Наровчатова
student-rower (uncredited)
Виктор Яковлев
Alyona's relative
Валентина Ананьина
Aleksei Ivanovich's companion (uncredited)
Павел Винник
Shatrov
Георгий Светлани
Alyona's grandfather
Иван Бычков
longshoreman
Erwin Knausmüller
rewarding person (uncredited)
Леонид Евтифьев
member of the academic council
Леонид Брусин
Vikentiy
Вячеслав Гостинский
member of the American delegation (uncredited)
Инна Кондратьева
member of the academic Council (uncredited)
Лариса Жуковская
princessa Christina
Валентин Смирнитский
Vasiliy
Вячеслав Захаров
Seva
Александр Потапов
Taras
Gennady Bolibok
Yukhan
Ирина Мирошниченко
Violetta
Олег Мокшанцев
Soluyanov
Marina Vlady
Self (uncredited)