Not related to the Motordrome challenge. This circuit is the most ridiculous, time consuming, excessive, and insane thing I have done thus far. No better way to end the 10 in 10 then. I will show three posts, the other configs you can figure for yourselves.
Note the main inner stadium is ringed entirely with stands, with the connecting roads going underneath and out.
Track Map:
Full Endurance (12.36 mi./19.94 km):
Full GP (8.75 mi./14.11 km):
Combined Short Endurance (9.13 mi./14.76 km):
Inner Endurance (5.28 mi./8.52 km):
Inner GP (4.1 mi./6.61 km):