more stats
1.1 miles
Distance
110 ft
Climb
-152 ft
Descent
00:09:29
Avg time
-44 ft
Altitude change
390 ft
Altitude min
440 ft
Altitude max
440 ft
Altitude start
397 ft
Altitude end
-0.7%
Grade
-25%
Grade max
19.5%
Grade min
1,342 ft
Distance climb
1,814 ft
Distance down
2,680 ft
Distance flat
00:09:29
Avg time

Silkworm Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Hike
    • Trail Running
  • Riding Area
    Tapeworm
    Renton, Washington
  • Difficulty Rating
    Blue Rate
  • Voted Difficulty
    Green (4 votes)
  • Local Popularity
    100 in Mountain Biking [+]
    • 95 in E-Biking
    • 5 in Trail Running
    • 5 in Hiking
  • Global Ranking
    #22941 in Mountain Biking [+]
    • #2988 in E-Biking
    • #213536 in Trail Running
    • #204594 in Hiking
  • State Ranking
    #404 in Mountain Biking · Washington [+]
    • #41 in E-Biking
    • #6,511 in Trail Running
    • #6,624 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    One Direction
  • Climb Difficulty
    Green
  • Physical Rating
    Easy
  • Family Friendly
    Yes
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 1
  • TTFs on Trail
    A-Frame, Bridge, Drop, Jump, Gap Jump, Ladder Bridge, Roller Coaster, Skinny, Teeter Totter, Wallride
  • Ride in Rain
    Yes

Super fun flowy trail with lots of undulating ups and down. Built within a tight space and engineered quite remarkably. Lots of fun wooden features to play on, a couple raised bridges, a medium size drop and a really cool teeter totter to finish things off.

Trail Supporters

  • Sponsor

Local Trail Association

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 8 rides
  • 6 miles average
6 Months
  • 98 rides
  • 6 miles avg distance
All
  • 1,180 rides
  • Last: Oct 31, 2026
c1c2c3c4
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update trails status or condition

Silkworm Trail Reports

statusdatedescription
Jul 1, 2026 @ 12:05pm (America/Vancouver)
Jul 1, 2026
 Single track flow is somewhat overgrown. Parts with jumps are ok.
Jan 14, 2026 @ 6:05am (America/Los_Angeles)
Jan 14, 2026
Oct 22, 2025 @ 5:20pm (America/Vancouver)
Oct 22, 2025
Jul 2, 2025 @ 9:00am
Jul 2, 2025
Oct 21, 2024 @ 12:06am
Oct 21, 2024
more »
Status:
on Jul 1, 2026
Ideal
Avg: 4.35 (22 votes)
Your vote: 0

view (9,138)
close
      Directions to silkworm trailhead (47.471020, -122.193100)
      View on Discover Map

      Photos

      38 more »
      mtb
      225 |
      Apr 24, 2022 @ 12:31pm
      Apr 24, 2022
      mtb
      199 |
      Apr 24, 2022 @ 12:30pm
      Apr 24, 2022
      mtb
      207 |
      Oct 3, 2021 @ 2:28pm
      Oct 3, 2021
      mtb
      263 |
      Aug 26, 2020 @ 11:01am
      Aug 26, 2020
      Wooden features 11Skinnies 6Rollers 4Boardwalk 4Drops 3Jumps 1Wallride 1Bridges 1

      Videos

      7 more »
      All The Fun Features On Silkworm Mtb Trail
      mtb
      0:23 | 1085 | Dec 15, 2020 , Renton
      Silkworm Sept 01 2019
      mtb
      9:54 | 1281 | Sep 7, 2019 , Renton
      Drop fail
      mtb
      0:12 | | Dec 14, 2020 , Renton
      Dirtnap on Silkworm
      mtb
      0:35 | 799 | Feb 12, 2012 , Renton

      Technical Trail Features (TTF)

      Routes with this trail

      131
      Tapeworm Time Trail Course (2023)
      ★ 3.0 • 7 miles • 681 ft • 36 • Race •
      This is the proposed Tapeworm Timetrail course for 2023.

      Trail Products

      4.5 ★★★★★
      22 Ratings
      5 ★ 64%
      4 ★ 18%
      3 ★ 18%
      2 ★
      1 ★

      4 Reviews & Comments

      Champhawker
      Impossibly compact placement for so much flow and variety. Someone really has a gift for the high speed climbing turn. Fun wood bits too, but the trail would still be a blast without them.
      carlsonwa carlsonwa
      Probably about as much fun you can make given the landscape they were working with. Fun banked turns, spaced enough to get some momentum. Easy access to well marked diamond options all along the route. If I lived closer I’d ride this daily.
      Frdbronco8
      My new favorite xc trail. Lots of optional wood features of differing sizes in great shape. Some fun short downhill sections to reward the climbs as well.

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      Nearby Trails

      Tapeworm

      • By ejbozlee & contributors
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      Frequently Asked Questions

      ▼ Where is Silkworm located?
      Silkworm is located in Tapeworm, Renton, Washington, United States. It is part of the Tapeworm trail network. The trailhead is located at coordinates 47.47102, -122.1931.
      ▼ How hard is Silkworm?
      Silkworm is rated as Blue difficulty. The physical rating is Easy. The average grade is 0.7%. The climb difficulty is rated Green.
      ▼ What is the elevation gain for Silkworm?
      Silkworm has 110 ft of elevation gain. The trail has 152 ft of elevation descent. The elevation ranges from 390 ft to 440 ft.
      ▼ Is Silkworm a point to point trail?
      Yes, Silkworm is a point to point trail. The direction is One Direction. The trail type is singletrack.
      ▼ How long is Silkworm?
      Silkworm is 1.1 miles long. The trail type is singletrack.
      ▼ Are dogs allowed on Silkworm?
      Yes, dogs are allowed on Silkworm. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Silkworm?
      Based on activity log data, the most popular months to ride Silkworm are:
      • October (55 activities)
      • March (47 activities)
      • May (46 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access Silkworm? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Silkworm are: View all parking locations in the area.
      ▼ How long does it take to ride Silkworm?
      Based on recorded activities, it takes an average of 9 minutes to ride Silkworm. The trail is 1.1 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Silkworm?
      Silkworm is a very popular trail. There have been 4,591 recorded activities on this trail. The trail has received 9,138 check-ins. View recent activity on this trail.

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