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Trail:Tiger Mountain

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Name Tiger Mountain
Tech Rating icon_favourites.gif icon_favourites.gif icon_favourites.gif
Grunt Rating icon_favourites.gif icon_favourites.gif icon_favourites.gif
Singletrack 100%
Fire road 0%
Paved 0%
Total trail 12 mi.
Alt. change 1900
Latitude: 47.466687
Longitude: -121.931183
Nearest medical: Not set yet
Page adopted by: R1de
Get Directions

See current weather conditions

Tiger Mountain Seasonal Trail Closure Information - Trails at Tiger are open seasonally, based on weather and ground conditions. See the Current Conditions selection below for the latest information about the status of these trails.

Trail Overview

Sign up for trailwork. We need your help to build these trails. Everyone is welcome!

Tiger Mountain is one of Seattle's most popular mountain biking destinations. The East Tiger Summit Trail, Preston Railroad Trail, Iverson (Fat Hand) Trail, and Northwest Timber Trail are all open to bicycles. Starting this season (2014), there are three new trails open - Silent Swamp, Joy Ride, and Fully Rigid. The trails are typically closed seasonally from October 15 to April 15 (check exact dates below), but there are many miles of roads open all year long.

Trails vary in difficulty. Iverson is considered the most technical, followed by Preston Railroad Grade and then NW Timber. Both Iverson and NW Timber have rolling grades although NW Timber has fewer roots and rocks, and easier climbs. Iverson is usually ridden clockwise. NW Timber is often ridden both directions. Preston is either a climb, descent, or both and sports several challenges with rocks and roots along the way. The new East Tiger Summit Trail is very fast and flowy; it is not technical in nature, but runs VERY FAST.

How to find it

From Seattle take I-90 East to Highway 18. Continue South on Highway 18 for 4.4 miles, until you reach East Tiger Summit on your right.

There are two main parking areas, both accessed from the highway 18 summit. The upper area is gated and is locked at 8:00 PM per the sign on the gate. This area also includes pit toilets. The road to the upper area travels travels west just above the lower parking lot.

Effective July 1st, 2011: a Discover Pass will be required to park at the upper lot. See here for details on obtaining a Discover Pass

Typical Conditions

Tiger mountain can be very wet following rain. The Preston can ooze water for up to a week after a heavy rain, so please take this into consideration when planning your ride.

The trails are closed seasonally from October 15 through April 15. Exact dates may vary, so check with Evergreen to see if the dates have been extended due to dry weather.

Current Conditions

All bikes trails are open! R1de 22:36, 11 April 2014 (PDT)

Always check the DNR's Trail Status page for any updates or closure notices: here.

Turn-By-Turn Guide

Click here to view the Tiger Mountain MTB trail map.

Click here for a GeoPDF map of the MTB trails at Tiger

Click here for a GPS track of the old Preston Out & Back

Click here for an older High-res map from

All trails are two-way and multi-use.

Summit Trail > Preston > NW Timber Trail loop

  • Climb up the main Tiger Mountain Road. From the lower parking lot, this is the gated road to your right as you head up the hill.
  • After approx 2.5 miles, you'll reach an intersection; stay to the right.
  • At the next fork in the road, say to the left and ride up to the radio towers.
  • Descend the trail down around the summit as it crosses back over the road you came up (just after a rock garden).
  • Merge onto the top of Preston and continue as described below, picking up where the end of Preston leaves off.

The Standard Road > Preston > NW Timber Trail loop

  • Climb up the main Tiger Mountain Road. From the lower parking lot, this is the gated road to your right as you head up the hill.
  • After approx 2.5 miles, you'll reach an intersection; stay to the left.
  • About 1/3 mile further you'll see the entrance to the Preston RR Trail on your right. If you go down a big hill you've gone too far.
  • Take the Preston RR Trail, it's about 4 miles long and has no intersections.
  • When you come out on the road, take a left and go about 100 ft.
  • Take a right turn at the first intersection.
  • Follow this road for approx 2 miles. You'll go down a big dip, and then climb up a hill.
  • At the Top of this hill you'll see some gravel piles and a road heading off to your right. The entrance to the NW Timber Trail is just past the road on your right.
  • Take the NW Timber trail for approx 2.5 miles. There are no intersections.
  • At the road, take a left and coast back down to the lower parking lot, about 1/3 of a mile -or- take the connector trail back to the upper parking lot.

The Iverson Loop (AKA Fat Hand Trail)

  • At the lower parking lot, take the left-hand road (West Side Road) towards the upper lot.
  • Continue past the upper lot, going around the gate.
  • After about 1.5 miles, you will see the entrance to the Iverson Railroad Trail to your right.
  • The trail starts with a short climb and has several short ups-and-downs before heading back down.
  • At the bottom, the train intersects the connector trail just before the bridge.
  • Turn right and you will quickly hit the upper parking lot.

West Tiger

  • Only Puget Power Trail and High School Trail are open to mountain bikes.
  • Bus Trail and Bonneville Trail are both not signed for limited use (Use your best judgment).
  • All other trails are off limits to bikes
  • From the bottom of the High School Trail, take your first right, then left at the 'T' up to Puget Power
  • The climb up from the High School to Puget Power is 18%-20%, High School is about 15%
  • High school is smooth double track, Puget Power is a middle chain ring fire access road.
  • It's 2.8 miles from the High School to the High Point Trailhead. Out and back using Bonneville is about 7.5 miles
  • Grunt 3 | Tech 1

All distances are estimates here and only for general reference.

Map of new East Tiger Summit Trail

Local Points of Interest

Misc. Information

A Message From the Washington Department of Natural Resources DNR is the land manager and is committed to building strong partnerships with trail users and volunteers. They ask you keep the folling in mind:

  • Tiger Mountain is a working forest. This means that trees are harvested to pay for things such as schools, but it also means the roads are actively used. Please be aware of vehicle traffic on the roads. This includes radio tower service vehicles which are present even when there is no active logging.
  • DNR is committed to building public partnerships. They have almost no budget for recreation yet are one of the biggest providers in the state of trails that re open to mountain bikes. Help support them by supporting Evergreen, voicing your support for DNR and volunteering for trail work.
  • Please respect the forest. DNR needs help with maintenance and any adverse uses make it hard to keep trails open and up to standard. Don't ride closed trails, respect seasonal closures, and help them keep the parking areas clean.

Advocacy Information

New Trails

The process started with heavy upgrades to the Preston RR Trail, followed by construction the new East Tiger Summit Trail, and continues with the rebuild of the Silent Swamp Trail (Preston to NW Timber singletrack connection) and construction of a new trail -- Off-The-Grid -- which will offer an alternative (versus using Preston) way down the mountain.

Ground breaking on the first new trail for Mt Bikers on Tiger mountain in 2 decades was November 7th 2010. See the Bike Intelligencer article on new trails. The E Tiger Summit trail opened in Sept 2012, followed by Silent Swamp, Joyride and Fully Rigid in April 2014. Next on the list: Off-the-Grid... an alternative to Preston!

Trail work will continue all summer. Sign up for a work party on the Evergreen calendar. Check back to see if new work dates have been added.

We need your support so we can build this trail. Please donate today.