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Trail Conditions
  • Unknown
  • Snow Groomed
  • 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 Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
  • < 2 days
  • < 1 week
  • < 2 weeks
  • < 1 month
  • < 6 months
  • > 6 months
Trail Ridden Direction
The intendid direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
ContributeDetails
Colors indicate trail is missing specified detail.
  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans ridelogs to determine which trails are ridden the most in the last 9 months. Trails are compared with nearby trails in the same city region with a possible 25 colour shades. Think of this as a heatmap, more rides = more kinetic energy = warmer colors.
  • most popular
  • popular
  • less popular
  • not popular

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

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

  • 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 Groomed
  • 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
  • TTF TTF
  • 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
  • Table or Bench eBike Charging Point
  • Other Other
      The McDonald-Dunn Forest is an 11250-acre research forest that lies north and of Corvallis. It is managed by the Research Forests group in the College of Forestry at nearby Oregon State University.

      Forest roads and authorized trails are open to foot, horse, and non-motorized bicycles for recreational use. There are no authorized trails in the Dunn forest. Trails are mostly singletrack. Some are gravel surface, some are natural. Some are subject to restrictions either based on season or on user types. There are no bicycle-only trails and all the trails are bidirectional.

      Recreation policy for the forests prohibits riding off of trails and states that it is unlawful to build or change or maintain trails without permission. Additionally, the trail etiquette requires mountain bikers to yield to all other user groups and asks that users stay on authorized trails only.
      Primary Trail Type: Cross-Country
      eBikes Allowed: No
      AKA: Mac Forest
      Links
      Region Details
      • 12
      • 3
      • 15
      • 10
      • 6


      Open on May 8, 2019
      Local Trail Association
      local trail association
      (teamdirt.org)

      Stats

      Avg Trail Rating
      Global Ranking
      #838
      State Ranking
      #13
      Trails (view details)
      46
      Trails Mountain Bike
      47
      Trails Hike
      47
      Trails Trail Running
      47
      Trails Horse
      1
      Total Distance
      42 miles
      Total Descent
      14,866 ft
      Total Vertical
      1,829 ft
      Highest Trailhead
      2,165 ft
      Reports
      474
      Photos
      16
      Ridden Counter
      1,368

      Photos of McDonald Forest Mountain Bike

      2 |
      Apr 25, 2019 @ 1:57pm
      Apr 25, 2019
      trail: No Secret
      67 |
      Nov 7, 2017 @ 8:38am
      Nov 7, 2017
      132 |
      Jun 13, 2017 @ 11:27am
      Jun 13, 2017
      132 |
      Jun 13, 2017 @ 11:27am
      Jun 13, 2017
      trail: Upper Dan's
      56 |
      May 2, 2017 @ 3:11pm
      May 2, 2017

      Videos of McDonald Forest Mountain Bike

      Dave's Trail - McDonald Forest
      trail: Dave's
      3:11 | 294 | Apr 2, 2018 , Corvallis
      The Tower Trail - McDonald Forest
      4:11 | 157 | Apr 2, 2018 , Corvallis
      McDonald Forest, Corvallis, Oregon
      trail: Extendo
      276 | Oct 8, 2017 , Corvallis

      Recent Trail Reports

      statustraildateconditionuserinfo
      Uproute
      May 8, 2019 @ 8:43am
      May 8, 2019
      DryRLove
      Road 662
      Apr 29, 2019 @ 11:35am
      Apr 29, 2019
      Drytbmaddux Team Dirt
      Road 680
      Apr 26, 2019 @ 8:09pm
      Apr 26, 2019
      Drytim-berjack
      Road 6020
      Apr 26, 2019 @ 8:09pm
      Apr 26, 2019
      Drytim-berjack
      Secret's Out
      Apr 26, 2019 @ 8:03pm
      Apr 26, 2019
      Drytim-berjackRunning great!
      Road 700
      Apr 26, 2019 @ 8:01pm
      Apr 26, 2019
      Drytim-berjack
      Dave's
      Apr 26, 2019 @ 8:57am
      Apr 26, 2019
      Drytbmaddux Team Dirt All-time conditions.
      Vineyard Mountain
      Apr 26, 2019 @ 8:57am
      Apr 26, 2019
      Drytbmaddux Team Dirt All-time conditions.
      No Secret
      Apr 25, 2019 @ 12:56pm
      Apr 25, 2019
      VariableallnamesrtakenMostly dry. A couple mud slicks where you...
      Play Time
      Apr 22, 2019 @ 1:49pm
      Apr 22, 2019
      Wetdanielcoyle TEAM DIRT OSU Center for civic engagement had 30...

      Activity Feed

      usernameactiontypetitledate
      user #1515812davidpettaddridelogMay 22, 2019 ride log
      May 22, 2019 @ 8:37pm
      13 hours
      user #1568974PcicilioaddridelogMay 22, 2019 ride log
      May 22, 2019 @ 8:36pm
      13 hours
      user #1404924MackcoaddridelogMay 22, 2019 ride log
      May 22, 2019 @ 5:46pm
      16 hours
      user #1602634MedinaEaddridelogMay 22, 2019 ride log
      May 22, 2019 @ 3:00pm
      19 hours
      user #1217391Cdarcy9addridelogMay 21, 2019 ride log
      May 21, 2019 @ 8:02pm
      2 days

      Recent Comments

      usernametypetitlecommentdate
      user #1012780tbmadduxreportPlay TimeNice job!
      Apr 14, 2019 @ 3:57pm
      Apr 14, 2019
      user #1012780tbmadduxreportPlay TimeThe trail was dry? That's a lie! Laughing...
      Feb 20, 2019 @ 1:43pm
      Feb 20, 2019

      Nearby Areas

      namedistance
      Chip Ross Park 1 12.1 km
      Alder Creek 2 43.3 km
      Bald Hill Natural Area 85.3 km
      Tum Tum 612 km
      Marys Peak 1 315.1 km

      Local Badges

      • By ACree & contributors
      • Admins: Team Dirt, metaoes68
      • #6123 - 6,895 views
      • mcdonald forest activity log | embed map of McDonald Forest mountain bike trails | mcdonald forest mountain biking points of interest
      • subscribe print map 3d map donate to earn trail karma!

      Downloading of trail gps tracks in kml & gpx formats is enabled for McDonald Forest.
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