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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
Trail Flow (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%
  • bi-directional trail
  • no data
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 intended direction a trail should be ridden.
  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction
Contribute Details
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
ATV/ORV/OHV Filter
Max Vehicle Width
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US Cell Coverage
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Radar Time
Activity Recordings
Trailforks uses anonymized public activity data. ?
Activity Recordings
Trailforks uses anonymized public activity data. ?
Personal Heatmap
▶ Activity Types
all / none
▶ Options
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Date range month
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Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status

Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.

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Slope Aspect
Direction the slope faces
Flat N NE E SE S SW W NW
Trails Deemphasized
Trails are shown in grey.
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Suggested Layers
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        The forest, also known simply as "Demo", is home to a series of mountain biking trails. Many of the singletrack trails course down ridges, largely on old logging road cuts created when the forest was first logged beginning in the 1930s. These routes were adopted as part of the recreational trail network when CAL FIRE acquired the property in the early 1990s. Additional singletrack trails were established through CAL FIRE's collaborations with local mountain biking clubs in 2000 (Braille Trail) and 2015 (Flow Trail.) The trails have grown into some of the most popular in the California Bay Area. They range from long fire road climbs and descents to tight, technical singletrack. The diversity in the trails makes them good for everyone from strong beginners to expert mountain bike riders. The trail network is changing over time as CAL FIRE conducts timber harvests in different areas of the forest. Old logging cuts (and the trails on them) are evaluated for long-term impacts to the watershed and steep sections are modified to limit erosion by either obliteration and recontouring, installing drainage structures, applying a top coat of hard crushed rock, or other measures. Singletrack trails are often realigned to help improve the recreational experience while protecting the watershed from excessive sediment delivery into the creek.
        • Activities:
          • Mountain Bike
          • E-Bike
          • Horse
          • Hike
          • Trail Running