The slopes at St Martin de Belleville
Saint Martin provides a base to access a massive 600km of pistes, ranging from 1,400-3,400 metres in altitude, so there's plenty to explore. Access is via the Saint Martin gondola and then a chairlift, which whisks you up to the top of the Tougnete peak.
From there, the ski area is your oyster: you can drop down into the Meribel valley on one side, or carve your way over to Les Menuires and Val Thorens in the other direction. When you've completed your adventures, you can ski back to Saint Martin via the blue-graded Biolley piste.