The only decent modern one i'm aware of is a conversion/rip from Assetto Corsa. It's somewhat frowned upon so I won't link it, but a search on google should prove fruitful ! I really wish we had an official version though for sure also.
I might have found it, but it is just the file, can you point me to a tutorial on how to install it, so far I have not use the workshop to install add on content
it will probably be a .rfcmp file you need to put it in the packages folder in your rfactor 2 install location. Once there, load up the launcher and on the left hand side above settings, there is the content button. Click o that and locate the file. right click on it and install. it will then be in the track list once you launch the game