PACIFIC SPIRIT PARK
Pacific Spirit Regional Park, the largest urban park in the world, is a 874 hectare (2,160 acre) second growth temperate rainforest with over 73 kilometres of walking and hiking trails. Some of these trails also allow off-leash dog walking, mountain biking, and horse riding. It's a great place for a break from the urbanity of the city.
A trail map can be found here or at many of the Park's entrances.