3,558 ft
Distance
00:06:25
Avg time

Grand Chasm Details

  • 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
    00:06:25
  • Avg reverse time
    00:07:48
  • view trail stats
Status:
on Feb 22, 2019
Snow Groomed
Avg: 5 (3 votes)

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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

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 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
      Directions to grand-chasm trailhead (48.476760, -89.206510)
      update trails status or condition

      Grand Chasm Trail Reports

      datedescription
      Feb 22, 2019 @ 5:37am
      18 hours
      reporter Freshly groomed 2/21/19. Get some riding in while you can because we've got another 15-25cm in the forecast this weekend.
      Feb 16, 2019 @ 7:55pm
      Feb 16, 2019
      reporter Machine groomed tonight, should be some of the seasons best riding tomorrow!
      Feb 14, 2019 @ 5:38am
      Feb 14, 2019
      reporter Freshly groomed 2/13/19. The trails should have set up well over night and will be primed for riding
      Feb 14, 2019 @ 5:36am
      Feb 14, 2019
      reporter Freshly groomed 2/13/19. The trails should have set up well over night and will be primed for riding
      Feb 9, 2019 @ 1:41pm
      Feb 9, 2019
      reporter Machine groomed today, still soft and needs a few more pass to be ridable.
      view all reports »

      Recent Ridelog Activity on Trail

      Past Week
      • 6 rides
      • 9 miles avg distance
      6 Months
      • 127 rides
      • 11 miles avg distance
      All
      • 1,691 rides
      •  

      Photos

      more »
      4 |
      Feb 18, 2019 @ 11:00am
      Feb 18, 2019
      Grand Chasm, Thunder Bay
      9 |
      Nov 2, 2018 @ 4:00pm
      Nov 2, 2018
      Grand Chasm, Timmins
      8 |
      Nov 2, 2018 @ 3:59pm
      Nov 2, 2018
      Grand Chasm, Timmins
      61 |
      Jan 27, 2018 @ 8:36am
      Jan 27, 2018
      Grand Chasm, Thunder Bay

      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
      622 | Nov 6, 2014 , Thunder Bay
      Fall-time in Shuniah
      0:59 | 26 | Nov 2, 2018 , Thunder Bay
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