Starting at Lynn Headwaters Regional Park, uses the Hanes Valley Trail, and then runs back to the start via the Grouse Mtn Rd and some trails.  25km.  See Gary Robbins' GPS file here:  http://www.movescount.com/moves/move34008081

The North Coast Trail is a 60km route at the northern end of Vancouver Island.  In a post titled "don't hike the North Coast Trail", besthike.com says:

"The NCT is a 'backcountry adventure', not a hike. There’s a reason some groups manage only 1km (.6mi) / hour on some sections."