Mont-Tremblant is a mountain with a ski resort bolted onto its flank and a town of 10,992 people (2021) spread around it. The Algonquin called the mountain the "trembling mountain", and the name stuck. Joseph Bondurant Ryan, an American who came for gold in 1938, opened the first lodge on 12 February 1939 and skiing took over. Intrawest bought the resort in 1991 and built the car-free village, and today it belongs to Alterra Mountain Company, the owner of the Ikon Pass.
Three days is the right length for one mountain and a spa. Two ski days cover the South, North, Soleil and Edge sides with time to repeat the runs you liked, and a third lets your legs rest while you do what the region is good at when it's cold: a dog team, a silent thermal spa, the old villages. Most visitors come from Montreal, about 140 km away by road, for a long weekend, and this plan is built to fit one.
Day one is the village and the South side, day two the North side, the Edge and the Soleil side, and day three is off the mountain: dog sledding, the Old Village, Saint-Jovite and the Scandinave Spa. Start on a Monday if you can: lifts and restaurants are far calmer than on a weekend, and the spa's weekday rate is lower. French is the language of daily life here; more in the Canada pages.