I was looking for a hike that I could do from Whistler Village for a few hours without a car and without a lift pass. Lost Lake is too close (and short) so I decided on Alta Lake which is a larger lake to the South West of Whistler Village.
It was easy to find, and despite the lake not being all that scenic, there were some great views of the surrounding mountains. I also managed to find some old car wrecks and some giant wooden chairs lakeside.
I walked around 12km in total in about two and a half hours; it was very enjoyable.