more stats
1.3 miles
Distance
123 ft
Climb
-98 ft
Descent
00:12:00
Avg time
25 ft
Altitude change
827 ft
Altitude min
889 ft
Altitude max
839 ft
Altitude start
863 ft
Altitude end
0.4%
Grade
-19.4%
Grade max
18.7%
Grade min
2,835 ft
Distance climb
2,192 ft
Distance down
1,824 ft
Distance flat
00:12:00
Avg time

Grom Loop Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Hike
    • Trail Running
  • Riding Area
    Marquette NTN South Trails
    Marquette, Michigan
  • Difficulty Rating
    Green Rate
  • Local Popularity
    80 in Mountain Biking [+]
    • 45 in E-Biking
    • 80 in Trail Running
    • 55 in Hiking
  • Global Ranking
    #12062 in Mountain Biking [+]
    • #49171 in Trail Running
    • #114746 in Hiking
  • Trail Type
    Singletrack
  • Bike Type
    AM, XC
  • Direction
    Both Directions
  • Dogs Allowed
    Yes
  • eBike Allowed
    Yes
  • Land Owner
    Noquemanon Trail Network

No community description for Grom Loop trail has been added yet!

AI Generated Description

Grom Loop is a highly rated 1 mile popular green difficulty singletrack trail located near Marquette Michigan. This mountain bike primary trail can be used both directions. On average it takes 12 minutes to complete this trail.

Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 12 rides
  • 6.9 km average
6 Months
  • 73 rides
  • 11.3 km avg distance
All
  • 386 rides
  • Last: Aug 14, 2026
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Grom Loop Trail Reports

statusdatedescription
Aug 6, 2026 @ 3:18pm (America/Menominee)
Aug 6, 2026
Jul 30, 2026 @ 7:37am (America/Detroit)
Jul 30, 2026
Anyone available to do a trail work hike with me on this Friday morning? Rain is coming and the reversals need a clean out. We just got to camp...
Jul 2, 2026 @ 3:01pm (America/Detroit)
Jul 2, 2026
Jul 2, 2026 @ 10:36am (America/Detroit)
Jul 2, 2026
Jun 30, 2024 @ 5:14am
Jun 30, 2024
more »
Status:
on Aug 6, 2026
Dry
Avg: 4.15 (7 votes)
Your vote: 0

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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 activity logs 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 users are riding a trail in its intended direction.
  • > 96%
  • > 90%
  • > 80%
  • > 70%
  • > 50%
  • < 50%
  • bi-directional trail
  • no data
Trail Last Ridden
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  • < 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
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  • Description
  • Photos
  • Description & Photos
  • Videos
Trail Popularity ?
Trailforks scans activity logs 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 activities = more kinetic energy = warmer colors.
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ATV/ORV/OHV Filter
Max Vehicle Width
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Activity Recordings
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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 users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status

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Slope Aspect
Direction the slope faces
Flat N NE E SE S SW W NW
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        Directions to grom-loop trailhead (46.513350, -87.412260)

        Photos

        No photos have been added for Grom Loop yet, add a photo.

        Videos

        3 more »
        youtuber My son tries to drop me on Grom Trail -...
        mtb
        11:35 | 628 | Jul 16, 2020 , Marquette
        Grom Kids Friendly Trail Testimonial for NTN
        mtb
        0:00 | 122 | Jul 22, 2020 , Marquette
        Trailside log rides
        mtb
        0:22 | 78 | Jul 22, 2020 , Marquette

        Technical Trail Features (TTF)

        Routes with this trail

        27
        Gorge-ous to Blue from NTN South Trailhead
        4 miles • 470 ft • 16 • Loop •
        A level above the Red and Green loops, this heads downhill on the incredibly scenic Gorgeous trail and...
        59
        Zueg's Trail loop via Gorge-ous
        ★ 2.0 • 7 miles • 1,006 ft • 15 •
        Loop from Rippling River to access to Zueg's Trail

        Reviews / Comments

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        Nearby Trails

        Marquette NTN South Trails

        Frequently Asked Questions About Grom Loop

        ▼ Where is Grom Loop located?
        Grom Loop is located in Marquette NTN South Trails, Marquette, Michigan, United States. It is part of the Marquette NTN South Trails trail network. The trailhead is located at coordinates 46.51335, -87.41226.
        ▼ How hard is Grom Loop?
        Grom Loop is rated as Green difficulty. The average grade is 0.4%.
        ▼ What is the elevation gain for Grom Loop?
        Grom Loop has 123 ft of elevation gain. The trail has 98 ft of elevation descent. The elevation ranges from 827 ft to 889 ft.
        ▼ Is Grom Loop a point to point trail?
        Grom Loop is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
        ▼ How long is Grom Loop?
        Grom Loop is 1.3 miles long. The trail type is singletrack.
        ▼ Are dogs allowed on Grom Loop?
        Yes, dogs are allowed on Grom Loop. Please keep dogs on a leash where required and clean up after them.
        ▼ When is the best time of year to ride Grom Loop?
        Based on activity log data, the most popular months to ride Grom Loop are:
        • July (89 activities)
        • August (58 activities)
        • June (35 activities)
        Check the reports page for current trail conditions.
        ▼ How do I access Grom Loop? Where is the closest parking trailhead?
        The closest parking and trailhead locations to Grom Loop are: View all parking locations in the area.
        ▼ How long does it take to ride Grom Loop?
        Based on recorded activities, it takes an average of 15 minutes to ride Grom Loop. The trail is 1.3 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
        ▼ How busy is Grom Loop?
        Grom Loop is a very popular trail. There have been 2,142 recorded activities on this trail. The trail has received 3,006 check-ins. View recent activity on this trail.

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