7.4 miles
Distance
1,069 ft
Climb
-1,065 ft
Descent
1,223 ft
High Point
4 ft
Altitude change
548 ft
Altitude min
606 ft
Altitude start
610 ft
Altitude end
-48.2%
Grade max
48.4%
Grade min
4 miles
Distance climb
3 miles
Distance down
3,885 ft
Distance flat

Lost Valley Loop is a roughly 9 mile ride out of the Fall Creek TH. Debates rage about route, but most people ride counter-clockwise so as not to miss the awesome descent on the McKenny Trail back down to Fall Creek. Thanks to trail work and re-routing over the past few years, this is now a year-round loop.

Detailed Description
Lost Valley Loop is a 7 mile popular easy route located near Olympia Washington. This mountain bike only route can be used both directions and has a moderate overall physical rating. This route includes 6 trails. This route climbs 1,069 ft with a max elevation of 1,223 ft then descends -1,065 ft.

Trail Issues on Route

  • Significant Issue / Amber: 2 trails (newest: Jun 7, 2026)
  • Minor Issue / Yellow: 2 trails (newest: Jun 11, 2026)
Local Trail Association
Local trail association
Friends of Capitol Forest (friendsofcapitolforest.org)
Please consider joining or donating to the local riding association to support trail development & maintenance.
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Stats

  • Distance
    7 miles
  • Avg time
    1 hr 32 min
  • Altitude min
    548 ft
  • Altitude start
    606 ft
  • Altitude end
    610 ft
  • Climb
    1,069 ft
  • Descent
    -1,065 ft
  • Grade max
    -48.2%
  • Grade min
    48.4%
  • Distance climb
    4 miles
  • Distance down
    3 miles
  • Distance flat
    3,885 ft

33 Reviews & Comments


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Details

  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Green
  • Route Type
    Loop
  • Bike type
    AM, XC
  • Direction
    Both Directions
  • Physical rating
    Moderate
  • Ridelogs
    160
Avg: 4 (1 votes)
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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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Slope Aspect
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Flat N NE E SE S SW W NW
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    youtuber The Nostalgia of Mountain Biking
    The Nostalgia of Mountain Biking
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    Apr 15, 2024

    Recent Trail Reports Along Route

    statustraildateconditiondescription
    Mima Falls Trail West
    Jun 11, 2026 @ 12:22pm (America/Vancouver)
    Jun 11, 2026
    A fair amount of wet/muddy. One down tree. Fairly overgrown.
    Lost Valley
    Jun 11, 2026 @ 12:22pm (America/Vancouver)
    Jun 11, 2026
    Pretty overgrown in parts. No downed trees though.
    Greenline Trail
    Jun 7, 2026 @ 3:07pm (America/Los_Angeles)
    Jun 7, 2026
    At the first road crossing come from the top I came across a trail closed sign. No indication there or at the Fall Creek Trailhead why it was closed. Similar sign at the Greenline Tie.
    McKenny Trail
    Jun 3, 2026 @ 11:16am (America/Los_Angeles)
    Jun 3, 2026
    The Margaret McKenny campground entrance to the trail is flagged and closed. Due to "hazard trees". It is ribboned blocked before the parking to use the trailhead parking. There was no signage on the trail itself further in near the Mima Fall Tie or up towards MnM trails.
    C-Line / C6000
    Jan 15, 2022 @ 9:31am
    Jan 15, 2022
    15 jan Clear to fall creek trailhead
    more reports »
    • By mutenutshellTF Pro & contributors
    • #6284 - 4,853 views

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