Analysing terrain data
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The exposure grade describes the potential consequences of falling or slipping off the path.
Low Exposure: The path is on completely flat land and potential injury is limited to falling over.
Medium Exposure: The trail contains some obstacles such as outcroppings and rock which could cause injury.
High Exposure: Some trail sections have exposed ledges or steep ascents/descents where falling could cause serious injury.
Extreme Exposure: Some trail sections are extremely exposed where falling will almost certainly result in serious injury or death.
Across the valley from all the action at the better-known Whistler Bike Park lies the Mount Sproatt alpine network. Five years in the planning and building, these epic trails officially opened in 2017.
The main loop is ~20km, with 1400m of climbing, so come prepared for a big day out! Into the Mystic is a beautifully-graded, machine-built trail which climbs 8km through old growth forest, into the alpine.
It links up with On the Rocks, a fitting name for this fun, flowy traverse which takes in Tonic Peak as it weaves past pretty alpine tarns to the junction with Lord of the Squirrels. Here you are presented with the choice of an out-and-back detour to the peak of Mt Sproatt (recommended).
Dubbed Happy Hour (2.5km and 207m climbing), this narrow and slightly techier trail rewards with vast views over Whistler Valley. Finally, Lord of the Squirrels will keep you on your toes (and hopefully on your bike) as it flows down 900m vertical of organic trail, rock slab, and the occasional ladder bridge.
Lord of the Squirrels is "classified as a blue trail — and it certainly is by Whistler’s standards — but there are plenty of rock rolls, roots, and tight switchbacks to keep you on your toes," writes Aaron Chamberlain on Singletracks.com.
"It’s a raucous, rowdy romp, dropping 3,000′ over four miles back to the Flank trail," Chamberlain continues. If you like to "earn your turns" and enjoy big backcountry riding experiences, they don't come better than this anywhere in the world.
Allow 5-8 hours for this ride. Sources: https://www.singletracks.com/blog/mtb-trails/whistlers-alpine-masterpiece-lord-squirrels-trail/