gmap-pedometer.com/?r=5169008 Not a easy track at all, even if it seems so theres bumps everywhere, and driven as counter clockwise. 
A demanding course here. In Seattle, Washington. The route takes you by many city landmarks known around the world such as the Space Needle and Pike Place Market. A route of speed, sharp corners, landmarks, and the ability to position your vehicle for hill inclines is key. It is a very physically demanding course.
This is a unique course through Portland, Oregon. You get high speed racing across bridges, and tighter inner city driving through downtown and industrial areas. It goes by the cities convention center and has locations with spectators in mind.
The putty road is one of the best roads in western Sydney. Its not short at around 285KM but its a good ride/drive and a nice way to spend a Sunday.
There is a few places to stop for food and to get fuel (I get less then 200km a tank when I am having fun)ā¦
It looks fairly simple, but there is a lot of elevation changes which makes for some fun challenges. Too fast, you catch air. There is also a turn nearby I could modify in, that would rival Laguna Secaās corkscrew.
iām back
and here it is a purpose built track right in the center of Africa
what do you think about it ???
How do you use this software? 
Click on start recording and double click to set points.
I made a rally course from some mountain roads close to where I live, it wouldnāt let me save it.
http://img215.imageshack.us/img215/5189/rallyj.jpg
Itās all gravel except for the road marked 90. Overall length is around 39 miles (57km)
Right, now that I can use this hereās my route
gmap-pedometer.com/?r=5484642
11.2538 Miles in an area where the fastest you could legally go is 60. Welcome to Canada, good roads with bad speed limits 
gmap-pedometer.com/?r=5499491
Just a quick one I threw together, this wouldnāt be suited for most of the cars you had in mind, the curvy section is narrow, rough, and thereās a lot of hills.