Although we decided a week earlier that we wanted to do something, we didn't get around to deciding where to go or doing any sort of planning until two days beforehand. Our excellent preparation included food shopping at 10pm the night before, and our start was a little delayed by a trip to MEC to exchange the water filter we picked up just before the food shopping (because it leaked).
Best Hikes and Walks of Southern British Columbia by Dawn Hanna summarises the hike as 14km long (return) with a high point of 915m and minimal elevation gain.