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1.3 miles
Distance
263 ft
Climb
-263 ft
Descent
00:09:45
Avg time
625 ft
Altitude min
779 ft
Altitude max
763 ft
Altitude start
763 ft
Altitude end
-35.611%
Grade max
59.55%
Grade min
3,089 ft
Distance climb
3,190 ft
Distance down
834 ft
Distance flat
00:09:45
Avg time
River Otter Loop Details
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Activities
- Mountain Bike
- Gravel Bike
- Adaptive Bike
- Hike
- Trail Running
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Riding AreaHidden Falls Regional Park
Auburn, California -
Difficulty Rating
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Local Popularity80 in Mountain Biking [+]
- 35 in Trail Running
- 40 in Hiking
- 5 in Adaptive Biking
- 90 in Gravel Biking
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Global Ranking
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Trail TypeDoubletrack
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Bike TypeXC, Gravel, Adaptive MTB
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DirectionDownhill PrimaryPopular Direction Shown
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Climb DifficultyGreen
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Physical RatingModerate
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Dogs AllowedYes
No community description for River Otter Loop trail has been added yet!
AI Generated Description
River Otter Loop is a 1 mile popular blue difficulty doubletrack trail located near Auburn California. This mountain bike primary trail can be used downhill primary and has a moderate overall physical rating with a 263 ft green climb. On average it takes 9 minutes to complete this trail.
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
- 2 rides
- 20 miles average
6 Months
- 48 rides
- 17 miles avg distance
All
- 365 rides
- Last: Sep 18, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
River Otter Loop 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
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- 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
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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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Directions to river-otter-loop trailhead
(38.970050, -121.181710)
Photos
3 more »
Videos
1 more »
Routes with this trail
★ 3.5 • 13 miles • 1,614 ft • 16 • Loop •
Many ways to put Hidden Falls together but I like this.
★ 1.0 • 14 miles • 1,541 ft • 7 • Loop •
This is my favorite route around Hidden Falls
19 miles • 1,999 ft • 20 •
A clockwise flowing large loop starting with a warm-up climb on , and including an out and back on the...
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Nearby Trails
- Deer Trail Reroute 0 ft
- Hidden Falls Access Trail 1,430 ft
- Pheasent Trail 1,732 ft
- Bobcat Trail 1,916 ft
- Grey Squirrel 2,251 ft
Hidden Falls Regional Park
- By TheBikeNerd
NWTA & contributors - #20276 - 2,503 views
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