When it comes to 24-hour races, endurance is crucial as drivers try to cover as much distance as possible within a defined time period. All vehicles normally have to still be in the race at the end of the time period and need to cross the finish line to ensure that the distance they've covered is valid. This sounds a lot easier than it is. Drivers have to constantly battle against conditions, tiredness and even darkness. For this reason, 24-hour races are often referred to by experts as the secret champion of motorsports.
