French Railways (SNCF) operates a train from Grenoble to Courchevel hourly. Tickets cost $15 - $22 and the journey takes 40 min. French Railways (SNCF) also services this route every 2 hours.
How to get from Grenoble to Courchevel
From Echirolles train to Montmelian, train to Moutiers-Salins-Brides-les-Bains, then taxi to Courchevel. 3 h 12 min 64€. From Echirolles train to Montmelian, train to Moutiers, then bus to Courchevel 1850 - Gare Routière. 4 h 52 min 35€. From Grenoble drive to Courchevel. 1 h 31 min 17€.