Whistler is the ultimate ski-in, ski-out pedestrian-friendly village. Depending on what you want to see and where you stay, you should be able to get from point A to point B just by walking or biking.
Pedestrians can saunter along the Village Stroll, which is lined with ... so you may want to download Tourism Whistler's Whistler Hiking and Biking Map or pick one up from the visitor center ...