Sainte Foy Tarentaise is, by road,
9 hours from Calais, 6 hours from Paris, 2.5 hours from Lyon, 2.5 hours from Geneva.
There are numerous airlines flying from UK that serve both Geneva and Lyon. There are regular transfers from both airports directly to Ste Foy, either scheduled or pre-booked.
Eurostar run directly to Bourg St Maurice during the winter and also a more regular service to Lyon, and of course there are numerous TGV services from most major cities in France to Lyon.