Grand Ridge Park
Grand Ridge Park includes 7 miles of WTA-built trail through western red cedar trees, sword ferns, nettles, berries and, at times, slugs. This trail is a little piece of the backcountry close to Seattle and is open to hikers, mountain bikers and equestrians.
Winding through 1,300 acres above Issaquah and Lake Sammamish, Grand Ridge Park is the result of a unique agreement between Port Blakely, which developed the Issaquah Highlands and King County. For every one acre of developed land, Port Blakely agreed to set aside four acres of park land. The trail provides habitat to many forest creatures besides just slugs, such as bears, owls, cougars, and chipmunks. You can access the trail at High Point or Central Park in the Issaquah Highlands, and eventually Duthie Park as well. Washington Trails Association has been involved with developing the trail system at Grand Ridge since 2000, first stringing together old logging roads and user-built trails and then building new trail north. The trail will eventually reach the Issaquah-Fall City Road and Duthie Hill on boardwalk through the marsh there. One of the highlights of the trail is a beautiful 40-foot long, hand-built bridge spanning Canyon Creek. Built by WTA volunteers over three years and milled from downed Cedar trees on the site, it's six-foot width accommodates hikers, bikers and horses, and also improves water quality. Both steelhead and cutthroat trout spawn downstream in Canyon Creek, which flows into the Snoqualmie River. In 2012, WTA volunteers also drove the final spike into a 600-foot boardwalk, also milled on site, that takes users out of the muck and on to firm ground. This boardwalk, near Duthie Hill, is the final section of trail to be finished at the park.
Driving Directions:
From Seattle, drive east on I-90 for approx. 18.1 miles. Take Exit 20, turn left at bottom of ramp. Pass underneath I-90 and park in the gravel lot to the west. Hike or bike west on the Issaquah-to-High Point Trail to the backcountry trailhead. You can also access the trail from Central Park and South Pond in the Issaquah Highlands neighborhoods. Access from the north is planned. Recent Trip Reports
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Grand Ridge Park
— May 06, 2012
— cholula
Day hike
Features:
Wildflowers blooming
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I love this trail. It is very close to my home and the forest is beautiful even though there isn't a...
I love this trail. It is very close to my home and the forest is beautiful even though there isn't a waterfall or view just beautiful forest and currently small wildflowers. I hiked this later in the day for the 5th time hoping that some of the bikers had gone home. Today was the second time I was almost creamed by 3 men mountain biking downhill and coming around a blind curve. The first biker stopped just short of me and the second biker slide to a stop almost hitting the first biker. They never apologized and didn't say a word but did stop long enough for my two leached dogs and myself to walk around them. It isn't fun to be on a beautiful trail and almost get hit by bikers going at least 17+ miles an hour. (My guess, I use to road race on my road bike.) It is disappointing that these bikers are taking over this new nice trail. I hope someone including myself doesn't get hurt hiking on this trail with a few inconsiderate mountain bikers. Many bikers were polite but it only takes one crazy to ruin your day.
Grand Ridge Park
— Apr 14, 2012
— granitemountain
Day hike
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Heard about this trail during a recent WTA work party in Auburn with much talk about the boardwalk n...
Heard about this trail during a recent WTA work party in Auburn with much talk about the boardwalk near the end. The trail is in great shape. Some climb at the beginning (about 500-750 feet over a mile or so) then level with ups/downs. Made it all the way to the boardwalk, about 4 hours roundtrip. It is a good nearby hike w/o much altitude gains. If the small parking lot is full, just park on the access road on the other side of I-90 that leads up to the tiger mountain trails. One warning, this is a heavily used mountain bike trail so beware if it freaks you out when a bike comes zipping down towards you. I will add that EVERY biker we encountered was very hiker friendly, courteous and paying attention. But it is a shared trail between mountain bikers and hikers.
Grand Ridge Park
— Mar 08, 2012
— George & Sally
Day hike
Issues:
Mudholes
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I had not done the northern section of the Grand Ridge Park Trail between Grand Ridge Drive and the ...
I had not done the northern section of the Grand Ridge Park Trail between Grand Ridge Drive and the SE Issaquah-Fall City Road, so decided on this hike today. I parked on NE Harrison Drive in the Issaquah Highlands and hiked 100 yards up to the trail head on Grand Ridge Drive because there is no parking where the trail crosses the road (there are no shoulders on this road). The trail snakes up through the woods, then hits an old logging road to the second trail junction. The main trail turns right and goes down hill to a creek crossing, them meets another old logging road and goes up a muddy hill. The road makes a horse shoe turn across another creek and goes a short distance and ends. There is a side trail (not shown on the King Co. Park map) just past the creek with a new sign, "PTS. East", heading uphill. From the end of the old road, the trail now heads down hill to two bridge creek crossings, where along the way I spotted an old King Co. survey concrete monument with a brass cap dated "1940". After the second bridge that cross a tributary of Canyon Creek the trail goes back up hill into a flat area. I passed a large granite boulder left from the last ice age when the glaciers melted back some 10,000 years ago. Then I passed a small lake with a sign reading "No Swimming Allowed". Further on the trail switchbacks down hill to the new boardwalk across the swamp that was construction by WTA members. They did a great job on this project. At the end on the boardwalk the trail swithbacks up about 1/4 mile to the SE Issaqauh-Fall City Road just acoss from Duthie Hill Park. I had lunch at the wooden bench on the boardwalk before hiking back, which is mostly up hill. I met several mtn. bikers, one trail running and one guy walking in slacks and a dress shirt. The trail is muddy in several areas, especially on the section between the big boulder and the new boardwalk. Anly saw one Douglas squirel and a few birds. No views along this hike as you are in the forest the whole time. The only big view was where I parked and you could see out to the Olympic Mtns., the skyscrypers of Bellevue and Seattle, plus the brown LA haze hanging over Seattle. This hike make a good alternative to the crowds going up West Tiger 3. George
Grand Ridge Park
— Feb 04, 2012
— kyle
Day hike
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Started out from Central Park in Highlands...If your looking for a nice local Seattle area hike with...
Started out from Central Park in Highlands...If your looking for a nice local Seattle area hike without having to get into snow this is a good one at the moment as long as you don't mind sharing the trail with more bikers than hikers. Lovely little rolling ramble through the hills without any blow downs today.
Day hike
Issues:
Blowdowns | Water on trail
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Went out for a trail run adventure following the big snow/ice/wind storms we had this week. We start...
Went out for a trail run adventure following the big snow/ice/wind storms we had this week. We started in Issaquah on the paved trail, where it is about 2 miles to the high point trailhead from the 1-90/front street interchange, and went to the end at issaquah-Fall City road. There was still a few inches of wet, sloppy snow left, crusted over in some places still from the icestorm. There are very many branches down everywhere littering the trail. We cleared many that we could lift that weren't weighted down with too much snow. The trail is still navigable, and even the several downed trees were easy to climb over, no need for major re-routes. One tree has fallen across the new WTA bridge but didnt seem to hurt the structure other than break the railing. Another has fallen across the new (almost completeed) boardwalk. By another strike of luck (or good karma), the boardwalk was not damaged either but the tree will need to go! It was really great to have what is finished of the boardwalk there to avoid the swamp. On the return trip, much of the snow had melted and the trail had turned into a river in many places so we ended up wet anyhow. The creek crossing would have been a real soaker, but we crossed on a mossy log just below where the creek crosses the trail. Like many other trails in the region right now, this one is going to need lots of clean up, but based on this weekend's adventures, Grand Ridge is better off than what i saw at Tiger or Cougar Mtn. It still took us an extra 90 minutes for the ~14 mile round trip.
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![]() The WTA Bridge is the handiwork of thousands of volunteer hours. Photo by Susan Elderkin.
2010, 2011
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