1936 French Grand Prix
Due to national outcry as a result of the 1935 Grand Prix where just one French car started which was uncompetitive and failed to finish , it was decided that for 1936 the race should be held as an endurance race for sports cars , with rules very similar to the 24 Hours of Le Mans , and featured a Le Mans start . 
<triplet> 24 Hours of Le Mans <subj> endurance race <obj> sport