The race distance is equal to the least number of complete laps which exceed a distance of 305 km ( 190 mi ) ( although Monaco is 260 km ( 160 mi ) ) .
The race distance are limited to two hours .
The race distance is equal to the least number of complete laps which exceed a distance of 305 km ( 190 mi ) ( although Monaco is 260 km ( 160 mi ) ) , and are limited to two hours .