1 miles
Distance
364 ft
Climb
-322 ft
Descent
00:17:21
Avg time

Underground Details

  • Riding Area
    Grand Rapids
    Grand Rapids, Michigan
  • Difficulty Rating
  • Trail Type
    Singletrack
  • Bike Type
    XC
  • Trail Usage
    Biking Primary
  • Direction
    One Direction
  • Climb Difficulty
    Green
  • Physical Rating
    Easy
  • Global Ranking
    #56101 in Mountain Biking
  • Local Popularity
    75 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
  • Land Manager
    Kent County

Once the lurk of urban BMXers in the early 2000s, this trail grew into disrepair until 2015 when restoration efforts began. It is now affectionately referred to as "The Underground" but remains a popular getaway for local city riders. Great for hardtailing, fat biking, or even BMXing.

Local Trail Association
More Stats for Underground bike trail
  • Altitude change
    42 ft
  • Altitude min
    699 ft
  • Altitude max
    809 ft
  • Altitude start
    699 ft
  • Altitude end
    741 ft
  • Grade
    0.633%
  • Grade max
    -39.683%
  • Grade min
    37.852%
  • Distance climb
    3,071 ft
  • Distance down
    2,875 ft
  • Distance flat
    691 ft
  • Avg time
    00:17:21
  • view trail stats
Status:
on Oct 27, 2018
Dry
no votes yet

view (148)
close
Trail Conditions
  • Unknown
  • 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 Ridden Direction

The intendid direction a trail should be ridden.

  • Downhill Only
  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
  • One Direction

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 or Major Issue / Red

  • 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 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
  • Other Other
      Directions to underground trailhead (42.919997, -85.633122)
      update trails status or condition

      Underground Trail Reports

      datedescription
      Oct 27, 2018 @ 10:13am
      Oct 27, 2018
      reporter
      Jul 29, 2018 @ 8:49am
      Jul 29, 2018
      It a little sandy at the south entrance but still rideable if you keep your speed up.
      May 24, 2018 @ 10:45am
      May 24, 2018
      May 22, 2018 @ 8:35am
      May 22, 2018
      Some puddles in the low spots, but otherwise good
      May 15, 2018 @ 4:56am
      May 15, 2018
      Mostly good, with a few damp spots
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 1 rides
      • 16 miles avg distance
      6 Months
      • 55 rides
      • 17 miles avg distance
      All
      • 135 rides
      •  

      Photos

      more »
      267 |
      Aug 17, 2004 @ 9:34am
      Aug 17, 2004
      Underground, Grand Rapids
      117 |
      Feb 29, 2004 @ 7:43pm
      Feb 29, 2004
      Underground, Grand Rapids
      191 |
      Feb 29, 2004 @ 7:43pm
      Feb 29, 2004
      Underground, Grand Rapids
      157 |
      Feb 29, 2004 @ 7:43pm
      Feb 29, 2004
      Underground, Grand Rapids

      1 Review & Comments

      • + 1
      flag onlysingletrack (Mar 13, 2018 at 17:59)
       Nice photos! But, were those really from the "Underground" in Grand Rapids, Michigan? I don't see any remnants of the lumber or the concrete culvert pipe.
      [Reply]

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