Coste Road can now be driven on Assetto Corsa. There are two ways: normal (from A to B) and reverse (from B to A). For now there is only 1 download and it contains both normal and reverse. Coste road is extremely fun to drive and is a cross between a mountain / hillclimb through a few small towns along the way.
COSTE 2015 v0.22
Assetto Corsa Coste Road Download