Pathfinder | 134 pts
The map placement here is a little off, as you don't really want to start on SW Marine Drive. The best place to start is on either side of West 16th Avenue, just as you enter the UBC Endowment Lands kind of area west of Blanca Street. Visit the Park Centre there to get maps.
The trails criss-cross a fair bit and it's easy to get lost, so having some GPS on hand is a good idea. Otherwise, you are totally surrounded by some incredible natural beauty with plenty of opportunities for birdwatching along the way.
Take some time to explore the UBC campus itself if you can too. It's a gorgeous campus. The Beaty Biodiversity Museum is really neat.