The track in the photo is 375ft race line" the grove" or about 425ft around the outside. Rules state that the course must have 12ft wide lanes and a min. of 120ft race line, there isn't a maximum race line yet.
I have run on tracks as big as 410ft raceline, and as small as 150ft raceline.
Some tracks are banked up to 33 degree and some of the smaller one are flat.
Almost all the rac tracks are permanent race facilaties.
The outdoor tracks are made up of concrete or asphalt. Indoor tracks are a tight looped carpet just for radio controlled cars.