more stats
4,075 ft
Distance
235 ft
Climb
-15 ft
Descent
00:09:32
Avg time
220 ft
Altitude change
714 ft
Altitude min
934 ft
Altitude max
714 ft
Altitude start
935 ft
Altitude end
5.4%
Grade
-6.6%
Grade max
23.9%
Grade min
2,851 ft
Distance climb
436 ft
Distance down
787 ft
Distance flat
00:09:32
Avg time

Mainline Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Gravel Bike
    • Horse
    • Hike
    • Trail Running
  • Riding Area
    Boxley Creek
    North Bend, Washington
  • Difficulty Rating
    Blue Rate
  • Local Popularity
    75 in Mountain Biking [+]
    • 65 in E-Biking
    • 85 in Trail Running
    • 5 in Hiking
    • 5 in Horseback
  • Global Ranking
    #174320 in Mountain Biking [+]
    • #72717 in E-Biking
    • #71094 in Trail Running
    • #320258 in Hiking
    • #11051 in Horseback
  • Hiking SAC Scale
    T1 Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC, Gravel
  • Direction
    Both Directions
    Popular Direction Shown
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Trail Visibility
    Sometimes hard to follow
  • Season
    Year round
  • Family Friendly
    Yes
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes up to Class 1
  • Ride in Rain
    Yes
  • Land Owner
    King County Parks

Main trail to climb from Snoqualmie Valley Trail to the downhill courses that start at the top of Boxley Creek. Middle section is flow with climbs at the beginning and end of trail. Multi directional with primary flow from east to west. Trail has several offshoots that can be mistaken as Mainline. Mainline is generally marked by orange tape.

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 20 rides
  • 9 miles avg distance
All
  • 130 rides
  • Last: Jun 7, 2026
c1c2c3c4
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Mainline Trail Reports

statusdatedescription
Mar 23, 2026 @ 12:41pm (America/Vancouver)
Mar 23, 2026
 Still needs logging tread work, buts downs cleared to top.
Mar 21, 2026 @ 5:03pm (America/Vancouver)
Mar 21, 2026
 Mainline is clear from the SVT entrance to where the logging area ends. Some tread work still needs to occur, but cleared & raked/rideable....
Feb 27, 2026 @ 12:52pm (Pacific/Midway)
Feb 27, 2026
Mainline has major damage where it parallels the power line clearing. There is some sort of forest clearing activity with heavy equipment which...
Nov 22, 2025 @ 7:17pm (America/Los_Angeles)
Nov 22, 2025
 Cleared. Went on rode most of the rest of the Box / didn't come across any others.
Nov 20, 2025 @ 1:56pm (America/Los_Angeles)
Nov 20, 2025
 The trail is blocked by a substantial fallen tree at the top of the first climb.
more »
Status:
on Mar 23, 2026
Variable
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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
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  • > 90%
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The intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
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Slope Aspect
Direction the slope faces
Flat N NE E SE S SW W NW
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        Directions to mainline-419976 trailhead (47.453550, -121.725110)

        Photos

        0 more »
        35 |
        Nov 22, 2025 @ 7:19pm
        Nov 22, 2025
        22 |
        Nov 27, 2024 @ 2:26pm
        Nov 27, 2024
        30 |
        Nov 27, 2024 @ 2:26pm
        Nov 27, 2024
        27 |
        Nov 27, 2024 @ 2:26pm
        Nov 27, 2024

        Videos

        2 more »
        youtuber A Small Gem of a Trail System || Boxley Creek
        8:31 | 158 | Nov 18, 2024 , North Bend
        First Recording (Boxley Creek)
        0:59 | 42 | Aug 14, 2024 , North Bend

        Technical Trail Features (TTF)

        Routes with this trail

        24
        Mainline Loop
        2 miles • 243 ft • 2 •
        The Loop is a popular route through the Boxley Creek region. This route utilizes the two most popular...

        Trail Products

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        Nearby Trails

        Boxley Creek

        • By METT-TCTF Pro & contributors
        • #419976 - 1,213 views

        Frequently Asked Questions About Mainline

        ▼ Where is Mainline located?
        Mainline is located in Boxley Creek, North Bend, Washington, United States. It is part of the Boxley Creek trail network. The trailhead is located at coordinates 47.45355, -121.72511.
        ▼ How hard is Mainline?
        Mainline is rated as Blue difficulty. The physical rating is Moderate. The average grade is 5.4%. The climb difficulty is rated Blue.
        ▼ What is the elevation gain for Mainline?
        Mainline has 235 ft of elevation gain. The trail has 15 ft of elevation descent. The elevation ranges from 714 ft to 934 ft.
        ▼ Is Mainline a point to point trail?
        Mainline is not a point to point trail. The direction is Both Directions. The trail type is singletrack.

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