1.5 miles

Distance

17 ft

Climb

-1,151 ft

Descent

00:27:39

Avg time

Undertow Details

Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
Riding Area

Rocky Peak Park
Simi Valley, California
Difficulty Rating

Black Diamond rate
Voted Difficulty

Double Black Diamond (6 votes)
Trail Type

Singletrack
Bike Type

DH
Direction

Downhill Primary
Popular direction shown
Dogs Allowed

Yes
eBike Allowed

Yes up to Class 1
TTFs on Trail

Drop, Jump, Rock Face, Rock Garden
Global Ranking
#8189 in Mountain Biking [+]
- #906 in E-Biking
- #78092 in Trail Running
Local Popularity
100 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

Altitude change

-1,135 ft
Altitude min

1,139 ft
Altitude max

2,276 ft
Altitude start

2,273 ft
Altitude end

1,138 ft
Grade

-14.3%
Grade max

-94.6%
Grade min

9.3%
Distance climb

364 ft
Distance down

1 mile
Distance flat

164 ft
Avg time

00:27:39
Avg reverse time

00:58:35
view trail stats

Status:

on Dec 10, 2022

Ideal

Avg: 4.9 (13 votes)

Your vote: 0

view (157)

Directions to undertow-150409 trailhead (34.284160, -118.637850)

update trails status or condition

Undertow Trail Reports

status	date	description
	Dec 10, 2022 @ 7:38am Dec 10, 2022	Light rain. Perfect dirt. All time conditions, this is what we dream about out here
	Apr 26, 2022 @ 9:01pm Apr 26, 2022
	Feb 12, 2022 @ 7:34am Feb 12, 2022
	Jan 25, 2022 @ 1:36pm Jan 25, 2022
	Jan 16, 2022 @ 7:41pm Jan 16, 2022

view all reports »

Recent Ridelog Activity on Trail

Past Week

3 rides
6 miles avg distance

6 Months

115 rides
10 miles avg distance

All

1,218 rides
Last: Mar 18, 2023

Photos

0 |

Mar 14, 2023 @ 4:12pm

Mar 14, 2023

55 |

Apr 26, 2022 @ 9:00pm

Apr 26, 2022

80 |

Dec 8, 2021 @ 3:16pm

Dec 8, 2021

85 |

Dec 8, 2021 @ 3:15pm

Dec 8, 2021

Trail Lists

Southern California Tourist
6 trails

Routes with this trail

title	distance
Rocky peak enduro sampler	13 miles
Chumash-RockyPeak-Undertow	10 miles
Rocky Peak to Undertow	3 miles

9 Reviews & Comments

Score Time Post Comment

Verdugist (Sep 25, 2022 at 13:00)

After having tried this trail for the 3rd time today and just returning from black and double black trails in Whistler, this is definitely a double black. Much more technical and intimidating than Snow Summit 10 ply (minus the gap jumps) with high risk/consequence in at least 3 sections (all steep tech rollers). Especially now in the extremely loose sandy/dusty conditions. Very steep in some sections and generally constant tech as well as off camber sections to keep you on your toes. If you know the lines the overall flow of the trail is very good. Wear full face and chest/back guard.

[Reply]

bigchipero

(Jul 30, 2022 at 15:31)

this trail was definitely for the advance rock rider! serious drops that will put u in da hospital if u don’t know watcha do’in. Also even on a eBike u are going to want to shuttle cuz there are no good uphill options back to the top !

[Reply]

nofunstravaguy

(Apr 26, 2022 at 21:03)

This trail is rad! Definitely a 'Hard Black'. There are fewer difficult features than The Grudge, so I'dsay slightly easier overall. However, there are a few large rock rolls and steeps sections which are harder than The Grudge. I'd say The Grudge has more bang for buck - more stacked with rollers jumps and slabs. Both are AWESOME.

[Reply]

Marcpelosi (Sep 21, 2021 at 12:54)

I would definitely rate this a double black. Has some ride arounds but a couple features makes this a double black. Best trail I’ve ridden in LA so far for downhill/enduro

[Reply]

blindstuff

VKBC (Sep 20, 2021 at 10:53)

By far the hardest of the three trails off rocky peak road. A few rock rolls on this one are quite technically challenge, definitely not let go and hang on like you can do on some on the grudge. If you're an advanced rider and want a challenge this is it, unless you're really good it'll take a couple of rides through to clean the trail top to bottom

[Reply]

Stlc

(Jan 7, 2021 at 10:29)

Of the three main trails Undertow is the most difficult. Then the Grudge and Hummingbird is last on the list...

[Reply]

dantepetri1

(Oct 27, 2019 at 18:01)

Super fun trail, little bit of everything and great hard pack traction

[Reply]