Riding a bike? Well then you ARE keen on fitness and cutting emissions! You’ll be pleased to know that Tignes is a resort that you do not need your car to get around, they offer a 24 hour bus service up and down the mountain from Tignes 1800 to Val Claret!
Tignes works as a summer resort as well, so if it’s too cold for you to ride up the mountain you can always wait for the summer.
We'd suggest that you at least take the train as far as Bourg St Maurice - the nearest town. You may be able to manage the harsh 50km uphill from there!
Le Tour De France did come through Tignes so you could always recreate the route for yourself or a party of your friends.