3,558 ft
Distance
00:06:21
Avg time

Grand Chasm Details

  • Riding area
    Trowbridge Forest
    Thunder Bay, Ontario
  • Difficulty rating
    Blue
  • Trail type
    Singletrack
  • Bike type
    AM, XC, Fat
  • Trail Usage
    Biking Only
  • Direction
    Downhill Primary
  • Climb Difficulty
    Blue
  • Physical rating
    Moderate
  • Season
    May-Oct
  • TTFs on trail
    Berm, Bridge, Drop, Jump, Ladder Bridge, Rock Face
  • Ride in rain
    Yes
  • Global Ranking
    #1237

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 mountain 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
    00:06:21
  • Avg reverse time
    00:07:48
  • view trail stats
Status:
on Nov 13, 2017
Snow Covered
Avg: 5 (2 votes)

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Directions to grand-chasm trailhead (48.476740, -89.206450)
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Grand Chasm Trail Reports

datedescription
Nov 13, 2017 @ 5:22am
Nov 13, 2017
reporter About 2 inches of fresh snow.
Nov 2, 2017 @ 8:46am
Nov 2, 2017
reporter Mud, snow and maybe a little ice. Trails are not in the best shape for riding.
Aug 26, 2017 @ 8:03pm
Aug 26, 2017
reporter
Aug 4, 2017 @ 6:00am
Aug 4, 2017
reporter The small amount if rain overnight should help with the dust.
Jul 28, 2017 @ 5:56am
Jul 28, 2017
reporter Trails are dusty dry in most areas.
view all reports »

Photos

more »
21 |
Sep 19, 2017 @ 7:01am
Sep 19, 2017
Grand Chasm, Thunder Bay
165 |
Jan 16, 2017 @ 5:19pm
Jan 16, 2017
Grand Chasm, Thunder Bay
221 |
Aug 9, 2016 @ 7:52am
Aug 9, 2016
Grand Chasm, Thunder Bay
190 |
Aug 9, 2016 @ 7:51am
Aug 9, 2016
Grand Chasm, Thunder Bay

Routes with this trail

titleratingdistance
Shuniah FORTY Miner race
7 miles

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Videos

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Shuniah Mines Pretzel Trail
437 | Nov 6, 2014 , Thunder Bay
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