2 miles
407 ft
-407 ft
Avg time

Tapeworm Details

  • Riding area
    Renton, Washington
  • Difficulty rating
  • Trail type
  • Bike type
    AM, XC
  • Trail Usage
    Biking Primary
  • Direction
    Downhill Primary
    Popular direction shown
  • Climb Difficulty
  • Physical rating
  • Season
  • eBike Allowed
  • TTFs on trail
    A-Frame, Bridge, Drop, Skinny, Teeter Totter, Wallride
  • Ride in rain
  • Global Ranking

Skill builder ride, nice quick after-work destination. It takes 1-2 hours to ride everything. This is a small system of trails that are tightly wound to make the most of a power utility company lot. There are now six trails: Crop Circles (only 1/2 can be ridden), The Tapeworm, Parasite, Mr. DNA, The Silkworm and BermSled. The CycoActive map is out of date and currently only lists a few of the trails, but it will get you started in the right direction. This is a trashy section of young deciduous trees, don't expect nice forest (this area is great night riding, just be cautious of low hanging branches).

+Bermsled: Flowy downhill with berms and jumps
+Mr. DNA: Technical with roots and rocks
+Parasite: Technical with sharp turns, roots, and log piles, many short steep ups and downs
+Tapeworm: Technical with structures, roots, drops, short uphills and log piles.
+Cropcircles: Maze-Like ride
+Silkworm: Flowy XC with optional drops, structures, and berms
+Main Path: Fire road/singletrack, easy, not hard features

Access Info

Most people park at the adjacent Philip Arnold Park and ride a few hundred yards up the road to access the trails.

From Seattle, take I-5 South to I-405 North. Take exit #2 to SR-167 North. As soon as you've gone under the freeway, turn RIGHT onto S Grady Way. This soon turns into Main Ave S. At a traffic light, take a RIGHT onto S 4th St which will go uphill. At the first intersection, bear soft right into Cedar Ave S. Go about 0.4mi, take the first LEFT onto S. 7th St going steep uphill. Go straight to the 4-way stop. Go straight, and before the gate turn right into the parking lot.

To get to the trails, bike up the gated road a bit. You'll see entries on the right; take the one just past the jeep road as one way in. The alternative is to take the first entrance as you crest the top of the road from the Philip Arnold parking lot. Once you're on the trail, the left fork takes you to the main entrance area, and the right fork to the Parasite entrances.

Local Trail Association
  • Please consider joining or donating to the local riding association to support trail development & maintenance.
    donate to earn trail karma!
More Stats for Tapeworm mountain bike trail
  • Altitude min
    323 ft
  • Altitude max
    415 ft
  • Altitude start
    400 ft
  • Altitude end
    400 ft
  • Grade max
  • Grade min
  • Distance climb
    4,745 ft
  • Distance down
    4,421 ft
  • Distance flat
    1,379 ft
  • Avg time
  • Avg reverse time
  • view trail stats
on Oct 6, 2018
Avg: 3.75 (12 votes)

view (337)
Layers winter
Trail Style
  • ?
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Directions to tapeworm trailhead (47.468349, -122.196183)
update trails status or condition

Tapeworm Trail Reports

Oct 6, 2018 @ 10:12am
Oct 6, 2018
Sep 15, 2018 @ 8:15pm
Sep 15, 2018
Just beware of the homeless person's tent 1/2 mile into the trail. It is mostly out of the way of the trail but it just hugs one of the wood...
Jul 3, 2018 @ 2:42pm
Jul 3, 2018
Jan 17, 2018 @ 5:38pm
Jan 17, 2018
Oct 7, 2017 @ 5:02pm
Oct 7, 2017
view all reports »


more »
61 |
Apr 29, 2017 @ 9:48pm
Apr 29, 2017
Tapeworm, Renton
213 |
Sep 30, 2015 @ 1:28pm
Sep 30, 2015
Tapeworm, Renton
168 |
Sep 30, 2015 @ 1:28pm
Sep 30, 2015
Tapeworm, Renton
285 |
Aug 16, 2014 @ 8:59pm
Aug 16, 2014
| 2 comments Tapeworm, Seattle

1 Review & Comments

  • - 1
flag Cascadiatrails (Jan 7, 2018 at 13:25)
 One of the worst trails I’ve ever ridden. I felt like the trail would never end. Too many loops on top of loops.

Post a Comment

You must login to Pinkbike.
Don't have an account? Sign up

Join Pinkbike  Login


no videos have been added for Tapeworm yet, add a video.
  • subscribe
  • flag
  • login to download gpx or kml files.