Which single track race is the longest in terms of distance?

Formula One Grand Prix
1924
Indianapolis 500
4591
Le Mans 24h
14689
Porsche Supercup
2024
Over the 24 hour period of Le Mans endurance race, modern competitors will complete race distances well over 5,000 km (3,110 mi). It is a distance over six times longer than the Indianapolis 500, or approximately 18 times longer than a Formula One Grand Prix.
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