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1.4 miles
Distance
447 ft
Climb
-168 ft
Descent
00:12:07
Avg time
280 ft
Altitude change
829 ft
Altitude min
1,115 ft
Altitude max
835 ft
Altitude start
1,115 ft
Altitude end
3.738%
Grade
-16.52%
Grade max
22.722%
Grade min
4,753 ft
Distance climb
2,322 ft
Distance down
407 ft
Distance flat
00:12:07
Avg time
Walnut Details
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Activities
- Mountain Bike
- E-Bike
- Gravel Bike
- Adaptive Bike
- Hike
- Trail Running
-
Riding AreaFrank G. Bonelli Park
San Dimas, California -
Difficulty Rating
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Local Popularity35 in Mountain Biking heatmap [+]
- 40 in E-Biking
- 5 in Trail Running
- 5 in Hiking
- 5 in Adaptive Biking
- 5 in Gravel Biking
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Global Ranking#132542 in Mountain Biking [+]
- #82344 in E-Biking
- #348298 in Trail Running
- #323714 in Hiking
- #8804 in Adaptive Biking
- #19962 in Gravel Biking
-
State Ranking#4,990 in Mountain Biking · California [+]
- #1,657 in E-Biking
- #14,200 in Trail Running
- #13,877 in Hiking
- #506 in Adaptive Biking
- #1,308 in Gravel Biking
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Trail TypeDirt/Gravel Road
-
Bike TypeXC, Gravel, Adaptive MTB
-
DirectionBoth Directions
-
Climb DifficultyBlue
-
Physical RatingModerate
-
Dogs AllowedYes
-
eBike Allowed
Hard packed wide trail (fire road) that is part of the main Bonelli Loop and part of the Schabarum Skyline Route
Local Trail Association
-
-
Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 3 rides
- 14 miles avg distance
All
- 27 rides
- Last: Nov 7, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Walnut 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 users are riding a trail in its intended direction.
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 Used
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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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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.
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- popular
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Activity Recordings
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Activity Recordings
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BC Backroad Status
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Directions to walnut-59357 trailhead
(34.093370, -117.819020)
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Routes with this trail
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★ 3.0 • 10 miles • 1,371 ft • 18 • Loop •
The 10 mile Nurburgring of the West Coast, taking you round the whole outside perimiter of the Bonelli...
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Nearby Trails
- Antonovich 965 ft
- Ragin Waters Dr Car Park 1,765 ft
- Walnut Ridge 1,900 ft
- Vargus Connector 2,513 ft
- Lower Vargus 3,136 ft
Frank G. Bonelli Park
- By derkderkall
& contributors - #59357 - 1,192 views
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