Tiger Mountain is also renowned as one of the most difficult trail systems in the Seattle Area. “The trails on Tiger are fierce, daring, and among the most aggressive in the Evergreen State,” writes local mountain biker Chris Daniels. And the deeper you dive into the trail system, "the more extreme and difficult it gets.” Of all the trails on the mountain, Predator is hands-down the most difficult. This experts-only trail "features 1.8 miles of steeper and more challenging terrain, including a committing rock waterfall chute,” according to EvergreenMTB.org. "This one-way descent is full of rock-armored steeps, with some tight turns over fast and undulating terrain packed with obstacles that will keep even highly skilled riders challenged,” they continue."

Sources: https://www.singletracks.com/mtb-trails/five2ride-mountain-bike-trails-off-i-5-washington-edition/ https://sacredrides.com/blog/seattle-mountain-bike-trails https://www.evergreenmtb.org/trails/tiger-mtn