All the stages in RBR are supposed to be licenced from actual events and roads, as its the Mont Blanc rally I would assume thats the case.
You can find details on the RBR site; its also worth noting that the game itself has picked up a number of awards from Blackhole Motorsports, including best physics model.
"Richard Burns Rally, the first true rally simulation game for PS2, Xbox and PC has picked up four awards in the Sim-Racing Awards 2004, voted for by users of Blackhole Motorsports (
www.bhmotorsports.com), the webs No.1 Rally sim website.
The game released in July 2004 was an instant hit with Rally game fans as it looked to provide the most realistic and exhilarating rally experience on any gaming platform.
Richard Burns Rally scooped the awards for; Best Gameplay, Best Physics Model, Surprise of the Year and beat both Colin McRae 2005 and Toca Race Driver 2 to the coveted Game of the Year Award. "
Richard Burns Rally - Website