Courmayeur pass covers: includes Courmayeur plus 2 days in one of the other Aoste valley ski resorts e.g. La Thuile & Pila. If you decide to ski in Chamonx, you can for approximately €50 per day, plus the return bus fare for approx. €20 return.
Mont Blanc Unlimited pass covers: includes Courmayeur & Chamonix Valley but does not include La Thuile & Pila. If you decide to ski a day in La Thuile or Pila, you need to upgrade for €34. Please note the bus between Courmayeur & Chamonix is no longer included with the Unlimited pass. There is a €14 fee.