A Sunday in Hell (original title: En Forårsdag i Helvede) is a 1976 Danish documentary film directed by Jørgen Leth. The film is a chronology of the 1976 Paris–Roubaix bicycle race from the perspective of participants, organizers and spectators. Paris–Roubaix is the most famous and usually the most dramatic of the spring classics. Much of the latter portion is over narrow, cobbled tracks that choke with dust on dry days and become slick and muddy in rain. For the riders it is a challenge to keep going without puncturing or crashing.