Ever since I first saw this film, I found it unforgettable. It is based on a short story by Alan Sillitoe, and does a wonderful job of bringing the unique atmosphere of his story to the screen (Sillitoe wrote the screenplay himself). There is a lot to admire in this film: the b&w cinematography (its power especially evident in the lyrical running sequences);the realistic presentation of the environment of the English working class at the time; brilliant acting, especially in the scenes of the confrontations between the - both masterful - Tom Courtenay and Michael Redgrave. All these ingredients provide for a richly textured study of the fine complications of emotion, experience and self-analysis. I would, of course, be in some ways inclined to agree that this film is outdated, but the main theme, that of the titular loneliness of the individual caused by the inadequacy of human means of communication, is something that can be still be felt in the modern times. Although the movement that spawned this film, the British Free Cinema, lasted for only a brief period of time, "The Loneliness of the Long-Distance Runner" has become the key British film of the 60s and a masterpiece of world cinema that,if you are a lover of classic films,you cannot allow yourself NOT to have.