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
Max Vehicle Width
US Cell Coverage
cell carrier legend

Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
Winter Trails
Warning A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
x 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.
Trails Deemphasized
Trails are shown in grey.
Only show trails with NO bikes.

Save the current map location and zoom level as your default home location whenever this page is loaded.

      Blanding’s turtles and many other uncommon or rare animals call Nachusa home. Grassland birds—including grasshopper sparrows, dickcissels and Henslow’s sparrows—perch in the colorful prairie grasses, alongside the state’s largest populations of federally threatened prairie bush clover. And in October 2014, bison returned to Nachusa. In total, the preserve is home to 700 native plant species and 180 species of birds.

      Add double track mowed paths are open to explore and visitors are welcome to walk in the prairie off trail.
      Big Jump Prairie Trailhead Parking google parking directions
      Do not climb any fences, use gates only. Do not enter the fenced off bison ranges.
      Activities Click to view
      Region Details
      40 hike trails

      Region Status
      Open as of Dec 14, 2022
      Local Trail Association

      Hike Stats

      State Ranking
      Trails (view details)
      Trails Mountain Bike
      Trails E-Bike
      Trails Hike
      Trails Trail Running
      Total Distance
      18 miles
      Total Descent Distance
      6 miles
      Total Descent
      696 ft
      Total Vertical
      164 ft

      Activity Feed

      PlumbBobMupdateregionactivity #38689844
      Apr 3, 2023 @ 10:52am
      Apr 3, 2023
      PlumbBobMaddpoiactivity #38689746
      Apr 3, 2023 @ 10:48am
      Apr 3, 2023
      PlumbBobMaddtrailactivity #38688763 and 7 more
      Apr 3, 2023 @ 10:10am
      Apr 3, 2023
      PlumbBobMupdatetrailactivity #38566758 and 1 more
      Mar 30, 2023 @ 11:13am
      Mar 30, 2023
      PlumbBobMupdatepoiactivity #38565893
      Mar 30, 2023 @ 10:34am
      Mar 30, 2023

      Activity Type Stats

      activitytypetrailsdistancedescentdescent distancetotal verticalratingglobal rankstate rankphotosreportsroutesridelogs
      Mountain Bike166 ft
      E-Bike166 ft
      Hike4018 miles696 ft6 miles164 ft
      Trail Running3517 miles646 ft6 miles157 ft
      • By PlumbBobM TRAILFORKS HCH Map Team & contributors
      • Admins: TNC-IL
      • #56831 - 267 views

      Downloading of trail gps tracks in kml & gpx formats is enabled for Nachusa Grasslands.
      You must login to download files.