Late October 2019 Started in Bellingham on the South Bay trail to Fairhaven which connects easily to the Interurban Trail, about 9 miles total each way... very nice ride with fantastic views of Bellingham Bay and some of the San Jaun islands. Most of the trail is flat and well packed but you do have to descend into and climb out of a couple of gorges where there were once rail bridges now long gone. Historic Fairhaven is a beautiful spot for lunch, lots of options. Will definitely do this one again!

I ride this trail twice a week from Everett to work in Mountlake Terrace and mostly love it. The areas in which you actually ride on the trail are wonderful. That means the sections from about Lynnwood Park & Ride thru Everett. I often am alone on those sections of trail, and I love to look over at stopped traffic on I-5 and feel smugly secure that I'm getting to work faster and with better exercise than those people.

The negatives of this trail are as people described: it starts and stops and sometimes there are sketchy people. There are several streets in which the trail stops and the rider has to cross streets -- 128th Street, 164th Street, approaching the back side of Alderwood Mall, and most of Mountlake Terrace including 220th Street. Those aspects of the trail are frustrating because they break the riding flow and make bikes feel like second class transportation. I especially hate the uphill/downhill approaching the mall, as it required riding on the road up a hill. It's a shame the city of Lynnwood couldn't widen that bridge to allow for bikes. Near 128th Street, the trail ends at an apartment complex and you have to ride through an area congested with kids in the afternoons, requiring weaving through people. Then on the other side of 128th, towards Everett, there are occasionally sketchy people who you can just bike away from.

Despite these frustrations, I love my Interurban Trail and am happy to ride it frequently. It's been improved over the years, especially thru Lynnwood, and riding it is a great way to start and finish the day.

Nice trail a little bumpy in places and overgrown with grass. The Darrington end starts by the airport and is near the IGA. The trail runs behind the Bluegrass festival grounds which gives great views of Whitehorse mountain. There is a wash out in one section near the river. It’s ok for bikes to ride by, or walk past. The trail is in the woods or in people’s back yards to Fortson Mill. The old mill is off in the woods and there is a parking lot. I went another mile west until there was a bridge marked closed. I had previously tried from the Centennial end, but the landslide still was blocking the trail. Hopefully more will open soon.

Late Summer 2018

TrailBear was not exactly “silent, upon a peak in Darien” when he parked at the twin bridges site (Rt. 530 & RR bridges) on the Whitehorse Trail (48°15'58.29"N x 122° 0'44.53"W).

“OMG, blacktop!” A few yards over, the trail surface was gleaming blacktop. Blacktop! Bear loves blacktop on his trails. Smooth riding. No ruts. Yes! We can do this! The trike came out and TB went spinning over the bridge and down the newly surfaced trail bed.

Smooth, fresh blacktop and dried leaves crunching under the tires. Looking closer, he wondered if he was one of the first riders on this stretch. There were only three tire tracks behind him. All evenly spaced. Might be him.

Was there some association with the construction crew he passed a few miles east where the trail crosses Rt 530 again… They were laying down more blacktop, heading east towards Darrington. Got a ways to go. Encourage them. They expected to be done with the trail project back in 2016. Perhaps 2020 might be the year. A bear can dream.

Regardless, the twin bridges is a lovely spot on the trail. You have a nice railroad bridge, a river with a long view, a beach for the kids and views. Locals are found recreating themselves here all summer.

Go west down the blacktop a bit and there is the Rt. 530 trail crossing – under construction. Wonder how they will do this. The Snohomish Centennial has a ped-controlled stop light at one crossing. This crossing is on a curve to make it sporting.

He managed to pedal across – but he waited and waited for a lull. Those fully loaded logging trucks doing 60 mph suggested caution. No sign of paving continuing west towards Trafton Trailhead. Back in 2016 when he checked out the Trafton Trailhead, he noticed they had laid a serious compacted gravel base heading east from Trafton, so there might be hope that was going to be a blacktop base.

@@@ MAP CHECK … The Whitehorse Trail project map – check it out

Here is the county project map. Currently, it is the best that you can easily put your hands on.

https://www.snohomishcountywa.gov/3693/Whitehorse-Regional-Trail

TB really hopes that the map note with a date of 2106 was a typo. You can see that they are doing this and that here and there. They have Phases. Must be a challenge to find all the funding for all the projects that add up to a completed trail.

The finished trail, combined with the excellent Snohomish Centennial Trail that runs from the Snohomish River north through Arlington to the Skagit County border will make this an even more attractive destination for riders.

The old right of way extends north along Rt. 9 in Skagit County and south into King County where it is the Burke-Gilman Trail. There are said to be plans to join the Snohomish to the B-G. Come that day, you can start at the Golden Gardens on Puget Sound and ride up to the Skagit line or cut over to Darrington.

@@@ FORTSON MILL TRAILHEAD … Welcome Wagon not in evidence (48°16'25.43"N 121°43'53.57"W)

TrailBear had such high hopes that morning. He would park at the Fortson Mill Trailhead and take a round trip east to Darrington and back. After all, the official map said this was the only open portion.

His hopes faded when he drove in … to the gate, hefty and well-locked. An official and rather annoyed sign proclaimed that “This Gate is Locked due to illegal dumping.” (Guys, if you are going to do caps, do caps for every word. More stylish.) Among the prohibited items were Alcoholic Beverages and Motor Vehicles. Not the place to party on a Friday night. At least the county hopes so. The gate says so.

Reading that ‘Foot traffic is allowed into the park” he hoofed it down the road to find a vast, empty parking lot in the woods. Great place to dump that old washer or have a kegger on Friday night. No signage.

More wandering about turned up the Fortson mill – now concrete walls with artistic graffiti, a dam and empty log pond and not much more. The trail is due north about 93 yards from the non-parking lot, over the slope and down.

@@@ DARRINGTON TRAIL HEAD … End of the trail (48°15'32.10"N 121°36'16.33"W)

Well, try the official open portion from the other end. Off to Darrington and the trail end on Railroad Ave. Pedal off down the trail and past the Three Rivers Mill. The trail here is gravel, and TrailBear was soon bored. Scrubby, cut over woods, no views, bumping over roots. Boring!

Stop, about face, pedal back. The reality is that from Fortson to Darrington, the Whitehorse is a woods ride. No bridges, no river, no views. TB has ridden the Trail of the Coeur d’Alenes and other scenic trails, so he is spoiled rotten and feels Entitled.

He wants scenic trails with endless unfolding vistas – an endless Instagram Heaven – not a bunch of scrubby woods. (And, while you’re at it – a rest room every five miles.)

He loaded up and headed back west to his happy discovery of real, fresh blacktop, a bridge and vistas at the twin bridges: “OMG, blacktop!” One happy TrailBear.

This is a beautiful trail. I had a free afternoon on a business trip to Seattle. Terrible traffic to get out of Seattle, but worth it to add this trail to my list. I wish I’d had more time. Had to cut my mileage short because I kept stopping for photos.

I'm leaving two stars because of the huge challenge it was to get from Everett to Seattle today, I like challenges but you may not and after attempting this trail you may even leave zero stars. You CAN NOT do the ride with out a map on your phone first off. Little to no signs leave you guessing and searching. The biggest thing today is the street closure around the Alderwood Mall area in Lynwood. If you're determined like I was today to get to Seattle, plan on taking 164th to 36th to 184th. Maple Rd and even Ash Rd underpass are closed - Till November. WTF. Interurban trail is years away from being user friendly.

This is a lovely paved trail that hugs the shoreline along Guemes Channel where large ferries regularly ply the waters between Anacortes and the San Juan Islands. The views are outstanding and the trail is accessible year round. Make a right turn off Highway 20 directly through the San Juan Passage housing development downhill to reach trailhead parking area along the water. The trail goes east about 1.2 miles toward the city of Anacortes with plans for eventual completion all the way to city center. This same parking area also serves the Ship Harbor Trail which runs westward toward the WA State ferry terminal. If you get the yen to go to Guemes Island there is a small Skagit County ferry that makes regular 5-minute crossings from downtown Anacortes.

Great trail, however do due tree roots there are some rough sections

I am happy that this trail exists, but it is hard to get in a rhythm riding it, as every mile or so the trail crosses a busy street, many with no lighted crossing. It is also highly urban, and much of the old right-of-way is gone, requiring the trail to take constant diversions. As noted in another comment, there are some "interesting" people on the trail as well from time to time. It's worth riding once or twice, but I much prefer more intact, scenic and safer trails like the Centennial.