3,558 ft
Distance
00:06:19
Avg time

Grand Chasm Details

  • Activities
    • Mountain Bike
  • Riding Area
    Trowbridge Forest
    Thunder Bay, Ontario
  • Difficulty Rating
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC, Fat
  • Trail Usage
    Biking Only
  • Direction
    Downhill Primary
    Popular direction shown
  • Climb Difficulty
    Blue
  • Physical Rating
    Moderate
  • Season
    May-Oct
  • Dogs Allowed
    Yes
  • TTFs on Trail
    Berm, Bridge, Drop, Jump, Ladder Bridge, Rock Face
  • Ride in Rain
    Yes
  • Global Ranking
    #1898 in Mountain Biking
  • Local Popularity
    100 in Mountain Biking

Originally built in the the mid 90's the area around Grand Chasm has seen significant changes over the years and multiple lines developed as local riders looked to take advantage of the terrain and natural features around the heart of the old mines.

In 2011 the local mountain bike club, in consultation with IMBA representatives, started to redevelop and align the trails in order to improve flow, length and sustainability of the trail. After nearly 4 years of work the final produce was unveiled and a new 1.1km signature trail was opened in Shuniah Mines. Riders are now treated to a true flow trail with long sweeping sections, bermed corners, and plenty of optional tech features including; a ladder bridge, roll-able jumps and rock features. The new trail takes advantage of modern trail building techniques, while still maintaining the "old school" feel.

*New for 2016*
Due to the closures of old mine shafts in the area by the city of Thunder Bay, the top portion of Grand Chasm has required significant re-routing. Local builders with the support of the city have been given the opportunity to complete the first machine built section of trail in Shuniah Mines. Expected to open when work is completed in the spring of 2016, the new top portion of the trail will contain some of the largest XC features every constructed in the trail system.

Local Trail Association
More Stats for Grand Chasm bike trail
  • Altitude min
    899 ft
  • Altitude max
    900 ft
  • Altitude start
    900 ft
  • Altitude end
    900 ft
  • Grade max
    -0.445%
  • Grade min
    0.728%
  • Avg time
    00:06:19
  • Avg reverse time
    00:07:48
  • view trail stats
Status:
on Jan 20, 2020
Snow Groomed
Avg: 5 (5 votes)

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Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • 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 intended 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
  • Ideal
  • 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
  • Sight Sight
  • Restrooms Restrooms
  • eBike Charging Point eBike Charging Point
  • Water Fountain/Source Water Fountain/Source
  • Gate Gate
  • Trail Sign Trail Sign
  • Table or Bench Table or Bench
  • Ladder Ladder
  • Stairs Stairs
  • Bridge Bridge
  • Camping Camping
  • Cabin Cabin
  • Lodge Lodge
  • Bear Cache Bear Cache
  • Dock Dock
  • Ranger Station Ranger Station
  • Summit Summit
  • Other Other
      Directions to grand-chasm trailhead (48.476760, -89.206510)
      update trails status or condition

      Grand Chasm Trail Reports

      statusdatedescription
      Jan 20, 2020 @ 7:52pm
      Jan 20, 2020
      reporter Groomed tonight, should set up nicely for low pressure riding tomorrow.
      Jan 14, 2020 @ 5:05pm
      Jan 14, 2020
      reporter Fresh snowfall needs packing, groomer is being repaired.
      Nov 5, 2019 @ 7:36pm
      Nov 5, 2019
      reporter Freeze-Thaw cycle, please avoid riding when wet to prevent damage to the tread.
      Oct 15, 2019 @ 3:01pm
      Oct 15, 2019
      reporter Trails are soaked. Please avoid riding if you start to leave ruts or tire tracks to prevent further damage before the trails start to freeze. The...
      Sep 16, 2019 @ 7:41am
      Sep 16, 2019
      Log down
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 3 rides
      • 10 miles avg distance
      6 Months
      • 207 rides
      • 11 miles avg distance
      All
      • 1,691 rides
      •  

      Photos

      more »
      54 |
      Feb 18, 2019 @ 11:00am
      Feb 18, 2019
      41 |
      Nov 2, 2018 @ 4:00pm
      Nov 2, 2018
      29 |
      Nov 2, 2018 @ 3:59pm
      Nov 2, 2018
      97 |
      Jan 27, 2018 @ 8:36am
      Jan 27, 2018

      Routes with this trail

      titleratingdistance
      Shuniah FORTY Miner race
      7 miles

      Reviews / Comments

      No reviews yet, be the first to write a review or ask a question.
      Use trail reports to comment on trail conditions.


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      Videos

      more »
      Shuniah Mines Pretzel Trail
      817 | Nov 6, 2014 , Thunder Bay
      Fall-time in Shuniah
      0:59 | 124 | Nov 2, 2018 , Thunder Bay
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