1.5 miles
Distance
17 ft
Climb
-1,151 ft
Descent
00:26:28
Avg time
Undertow Details
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Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
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Riding AreaRocky Peak Park
Simi Valley, California -
Difficulty Rating
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Voted DifficultyDouble Black Diamond (12 votes)
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Trail TypeSingletrack
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Bike TypeDH
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DirectionDownhill PrimaryPopular direction shown
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Dogs AllowedYes
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eBike AllowedYes up to Class 1
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TTFs on TrailDrop, Jump, Rock Face, Rock Garden
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Global Ranking
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Local Popularity100 in Mountain Biking [+]
- 5 in Trail Running
- 5 in Hiking
One of three trails descending westward off the Rocky Peak Trail, Undertow offers many rock rolls, step-ups, and step-downs. It is more technically challenging than the adjacent trail Hummingbird.
This trail is unsanctioned.
Traditionally Indigenous Territory
More Stats for Undertow mountain bike trail trail
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Altitude change-1,135 ft
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Altitude min1,139 ft
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Altitude max2,276 ft
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Altitude start2,273 ft
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Altitude end1,138 ft
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Grade-14.3%
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Grade max-94.6%
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Grade min9.3%
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Distance climb364 ft
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Distance down1 mile
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Distance flat164 ft
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Avg time00:26:28
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Avg reverse time00:58:35
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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
- no data
Trail Last Ridden
Trailforks scans ridelogs to determine the last time a trail was ridden.
- < 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
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- Videos
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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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
inches
US Cell Coverage
Legend
Radar Time
x
Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
- mountain biking recent
- mountain biking (>6 month)
- hiking (1 year)
- moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
- Downhill Ski
- Backcountry Ski
- Nordic Ski
- Snowmobile
Winter Trails
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Missing Trails
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Least Popular
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 riders jump on trails. Zoom in to see individual jumps, click circles to view jump details.
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Directions to undertow-150409 trailhead
(34.284160, -118.637850)
update trails status or condition
Undertow Trail Reports
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Recent Ridelog Activity on Trail
Past Week
- 0 rides
6 Months
- 21 rides
- 18 miles avg distance
All
- 184 rides
- Last: Jun 6, 2025
Photos
more »
Trail Lists
-
Southern California Tourist
6 trails
Routes with this trail
12 Reviews & Comments
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