The Knee Knackering North Shore Trail Run, also known as the Knee Knacker, was established in 1989 and is a 48.6 km (30 miles) ultramarathon trail run in that takes place in British Columbia, in the Greater Vancouver area on the second Saturday of July each year.
The route, comprising about 2,600 m of vertical climb and descent, generally follows the Baden-Powell Trail, and traverses the North Shore Mountains from Horseshoe Bay to Deep Cove.
Both ends of the Baden Powell trail course are close to sea level, with a high point of 4,016 feet (1224 m) at the peak of Black Mountain.
The course follows a scenic and very technical trail through a coastal British Columbia rain forest.
Most of the trail is within the forest, and there are some spectacular vistas at a number of points along the way, particularly at Eagle Bluff.