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2,306 ft
Distance
285 ft
Climb
-3 ft
Descent
00:12:51
Avg time
285 ft
Altitude change
868 ft
Altitude min
1,153 ft
Altitude max
868 ft
Altitude start
1,152 ft
Altitude end
12.3%
Grade
-5.5%
Grade max
37.7%
Grade min
2,041 ft
Distance climb
75 ft
Distance down
190 ft
Distance flat
00:12:51
Avg time
Bertha Details
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Activities
- Mountain Bike
- E-Bike
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Riding AreaMarquette NTN South Trails
Marquette, Michigan -
Difficulty Rating
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Voted DifficultyProline (1 vote)
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Local Popularity60 in Mountain Biking [+]
- 85 in E-Biking
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Global Ranking#19402 in Mountain Biking
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Trail TypeSingletrack
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Bike TypeDH, AM, XC
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DirectionDownhill Only
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Climb DifficultyGreen
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Physical RatingHard
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Alpine TrailYes
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Dogs AllowedYes
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eBike Allowed
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TTFs on TrailBerm, Bridge, Drop, Jump, Gap Jump, Ladder Bridge, Log Ride, Roller Coaster, Skinny, Wallride, Other
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Year Opened2002
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Land OwnerNoquemanon Trail Network
Downhill trail off benson. Has trail features.
Access Info
At top of benson grade, Keep going on the grade until you reach the bertha sign.
Disclaimer
Expert level
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 7 rides
- 9 miles avg distance
All
- 157 rides
- Last: Jun 20, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Bertha Trail Reports
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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)
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
The colour categories are based on what percentage of riders are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
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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
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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.
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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.
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BC Backroad Status
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Directions to bertha trailhead
(46.510360, -87.426410)
Photos
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Nearby Trails
- Bertha Return To Top 0 ft
- Hardtail Climb 794 ft
- Doug's Back 9.5 1,106 ft
- Carp Eh Diem Connector 2 1,237 ft
- Lower Bread Basket 1,486 ft
Marquette NTN South Trails
- By bikerkid06 & contributors
- #106994 - 4,960 views
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Frequently Asked Questions About Bertha
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Where is Bertha located?
Bertha 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 46.51036, -87.42641.
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How hard is Bertha?
Bertha is rated as Double Black Diamond difficulty. The physical rating is Hard. The average grade is 12.3%. The climb difficulty is rated Green.
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What is the elevation gain for Bertha?
Bertha has 285 ft of elevation gain. The trail has 3 ft of elevation descent. The elevation ranges from 868 ft to 1,153 ft.
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Is Bertha a point to point trail?
Yes, Bertha is a point to point trail. The direction is Downhill Only. The trail type is singletrack.
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