[Not a pilot - Please delete as others add better charts]. Here is a quick and dirty map via Google:
The course is a ~9 mi. counterclockwise oval with the short side along Runway 8/26 and the grandstands. The longer sides fit mostly within the hills, though some of the planes do go directly over the foothills that parallel Lemon Valley Drive.
I understand that the race officials put certain homeowners up in hotels for the duration of the races.