The Ten Block Randomizer Campaign was made by spinning randomizer wheels for both the vehicle type and surface type.
White Series (excluding start, finish, and scenery) = 10 blocks
Green Series (excluding start, finish, and scenery) = 15 blocks
Blue Series (excluding start, finish, and scenery) = 20 blocks
Red Series (excluding start, finish, and scenery) = 25 blocks
Black Series (excluding start, finish, scenery AND map #25) = 30 blocks