Tiger Mountain
Tiger Enduro, Iverson Stage
Key Info
2-3-4 of 5(technical difficulty)
3 of 5(physical difficulty)
Premium Trail
20 miles total
1600' elevation gain
90% single track
10% fire road
47.466290 lat.
-121.930575 long.


Predator is open. Tiger Mountain's first downhill mountain bike trail is open for business!

Caution: this is a very steep and technical one-way downhill only, experts only, double black diamond trail. Enjoy!

Tiger Mountain is one of Seattle's most popular mountain biking destinations. The East Tiger Summit, Preston Railroad, Iverson (Fat Hand), Silent Swamp, Fully Rigid, Joy Ride, Off-the-Grid, Bail-out, Northwest Timber and Predator Trails are all open to bicycles. Starting in 2014, trails will not be subject to the past Oct 15 to Apr 15 seasonal closures. However, all trails are still subject to closures depending on trail and weather conditions (check for updates on this page and on the DNR's Tiger Mtn page here). There are many miles of logging roads that are open all year long.

Trails vary in difficulty:

  • Iverson is considered moderately technical, and is a bit of a grunt in either direction.  Call it a Blue Square.
  • East Tiger Summit is extremely fast and flowly, requiring minimum pedaling, and overall pretty buff but with a few gnarly spots.  Big physical grunt to get to the top, but a Green Circle to descend.
  • Preston Railroad Grade is also fast but more technical than the Summit Trail, with roots, rocks, some gnar sections and some switchbacks.  It requires very little pedaling in the downhill direction, but can be ridden either way.  It's a challenge in the climbing direction!  Blue Square on the way down, Black Diamond for the way up.
  • Preston Bailout Radness (PBR) is a relatively short, .4 mile, trail off of the third switch back on Preston that offers an alternate way to the crossover road that removes most of the climb to Fully Rigid.  It’s a rooty, technical flow trail that crosses the characteristics of Fully Rigid and Joy Ride with excellent sight lines and several bermed turns. Blue square/black diamond descending, black diamond climbing. Note this trail is designated as descending riders having right-of-way.
  • Silent Swamp is a rolling elevation trail that connects the bottom of Preston to the top of NW Timber (via Joy Ride) without needing to ride the road.  This is a new purpose built trail for bikes, so not reusing a road grade.  It can be ridden either way, Blue Square either way.
  • Fully Rigid is a short, technical trail that connects the road above NW Timber to the intersection of Silent Swamp and Joy Ride.  It has some very tight and gnarly sections, and is intended to be ridden in the downhill direction, and is an extreme challenge to climb!  Black Diamond downhill, Double Diamond uphill.
  • Joy Ride is similar to the East Tiger Summit Trail - flowy and fast with some rollers in places.  Green Circle/Blue Square either way.
  • NW Timber is a mostly buff Green Circle that can be ridden either direction, but has a few intimidating cruxes that a fair number of riders might dismount for (the infamous off-camber root drop near the ledge).  This trail is nearest to the trailhead; watch for hikers and riders going both ways.
  • Off the Grid (OTG) is 2.5 mile trail opened late August 2014.  It is a mostly downhill trail that peels off to the right just after you cross the road when descending the East Tiger summit trail. It rides like a good mix of Joy Ride and Fully Rigid, but does contain a few short climbing section. It exits directly above the entrance to Fully Rigid.
  • The newest trail to join the Tiger Mountain network of bike trails, is Predator.  Predator is a true DH (yes, downhill!) trail rated double-diamond/experts-only.  It features 1.8 miles of steeper and more challenging terrain, including a committing rock waterfall chute.  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.  The entrance (top) of Predator is on the crossover road, just past the final "Y" intersection on your way to the summit: instead of turning left to go up to the summit, go right and look for the trailhead on your right.  This trail crosses the main Tiger road near the bottom, and terminates near the end of Iverson.

Tiger mountain can be wet following rain.  Significant trail rerouting and maintenance efforts over the years have drastically improved Tiger's recovery and rideability due to rain, but due to the traffic it receives, it's still wise to avoid in rainy weather.

Tiger's summit is high enough to receive significant snowfall during winter months, and there may be intermittent closures of the upper trails during snow events.

Iverson and NW Timber see significant use by hikers.

Evergreen is underway with a major improvement of the Tiger Mountain bicycle trail system.