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
  • Climb Difficulty
  • Physical Rating
  • Season
  • eBike Allowed
  • TTFs on Trail
    A-Frame, Bridge, Drop, Skinny, Teeter Totter, Wallride
  • Ride in Rain
  • Global Ranking
    #21010 in Mountain Biking
  • Local Popularity
    90 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking

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 The CycoActive map is out of date and currently only lists a few of the trails, but it will get you started in the right direction.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
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More Stats for Tapeworm 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 Jan 6, 2019
Avg: 3.85 (12 votes)

view (479)
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
Trail Ridden Direction

Trailforks scans users ridelogs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.

  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
Trail Ridden Direction

The intendid direction a trail should be ridden.

  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction

Trail Difficulties
  • Access Road/Trail
  • White
  • Green
  • Blue
  • Black
  • Double Black Diamond

Trail Report Status
  • Clear / Green
  • Minor Issue / Yellow
  • Significant Issue / Amber
  • Closed or Major Issue / Red

  • Land Owner Overlay
  • Wilderness (typically no bikes in USA)
  • BLM (public)
  • USFS (Wildlife sanctuaries darker than usfs)
  • State land
  • Indigenous
  • Military
Trail Conditions
  • Unknown
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Dry
  • Very Dry
  • Map Markers
  • trail Trail Head
  • photo Photo
  • place Directory Listing
  • region Riding Area
  • Parking Parking
  • Viewpoint Viewpoint
  • Information Information
  • Warning Warning
  • Directions Directions
  • Water Fountain/Source Water Fountain/Source
  • Sight Sight
  • Restrooms Restrooms
  • Gate Gate
  • Camping Camping
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Other Other
      Directions to tapeworm trailhead (47.468349, -122.196183)
      update trails status or condition

      Tapeworm Trail Reports

      Jan 6, 2019 @ 10:35am
      Jan 6, 2019
      Dec 28, 2018 @ 8:03am
      Dec 28, 2018
      My first time getting over to this local trail. Just an hour after work. Had a lot of fun while I still had light to see all the many wet roots. ...
      Oct 30, 2018 @ 9:18am
      Oct 30, 2018
      Many leaves, in need of raking.
      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...
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 5 rides
      • 7 miles avg distance
      6 Months
      • 83 rides
      • 6 miles avg distance
      • 501 rides


      more »
      81 |
      Apr 29, 2017 @ 9:48pm
      Apr 29, 2017
      Tapeworm, Renton
      241 |
      Sep 30, 2015 @ 1:28pm
      Sep 30, 2015
      Tapeworm, Renton
      193 |
      Sep 30, 2015 @ 1:28pm
      Sep 30, 2015
      Tapeworm, Renton
      303 |
      Aug 16, 2014 @ 8:59pm
      Aug 16, 2014
      | 2 comments Tapeworm, Seattle

      2 Reviews & Comments

      • - 2
      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.
      • + 1
      flag masonguy (Dec 31, 2018 at 18:17)
       An absolute banger, but not easy! enjoy the challenge and the creativity of the builders, them jammed so much into such a small area it is brilliant!

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