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1.9 miles
Distance
142 ft
Climb
-328 ft
Descent
00:20:07
Avg time
-186 ft
Altitude change
153 ft
Altitude min
405 ft
Altitude max
405 ft
Altitude start
220 ft
Altitude end
-1.8%
Grade
-25%
Grade max
16.2%
Grade min
3,094 ft
Distance climb
1 mile
Distance down
1,486 ft
Distance flat
00:20:07
Avg time
Unknown Details
-
Activities
- Mountain Bike
- Hike
- Trail Running
-
Riding AreaRockville Hills Regional Park
Fairfield, California -
Difficulty Rating
-
Voted DifficultyBlack Diamond (2 votes)
-
Local Popularity55 in Mountain Biking [+]
- 5 in Trail Running
- 45 in Hiking
-
Global Ranking
-
State Ranking
-
Trail TypeSingletrack
-
Bike TypeAM, XC
-
Climb DifficultyGreen
-
Physical RatingModerate
-
Dogs AllowedYes
-
TTFs on TrailRock Garden
No community description for Unknown trail has been added yet!
AI Generated Description
Unknown is a 2 mile moderately popular black diamond difficulty singletrack trail located near Fairfield California. This mountain bike primary trail and has a moderate overall physical rating with a 142 ft green climb. It features rock garden. On average it takes 20 minutes to complete this trail.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 8 rides
- 9 miles avg distance
All
- 158 rides
- Last: Oct 10, 2026
Unknown 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.
- > 96%
- > 90%
- > 80%
- > 70%
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- 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
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- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
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Directions to unknown-60941 trailhead
(38.250970, -122.138420)
Photos
12 more »
Videos
4 more »
mtb
16:12 |
424 |
Jan 12, 2021 , Fairfield
mtb
553 |
May 27, 2017 , Fairfield
mtb
0:26 |
|
Mar 5, 2023 , Fairfield
Routes with this trail
★ 3.5 • 7 miles • 1,354 ft • 41 • Point to Point •
Tour of some of the chunky black and double back descents in Rockville
7 miles • 1,325 ft • 41 • Point to Point •
Tour of some of the chunky black and double back descents in Rockville
4 Reviews & Comments
bigboyriffs
This is a serious challenge to clear. I can typically clear most single black trails without much problem but there's a few sections on this I had to walk. Granted I'm better at tech downhill than tech xc.
Isaacg77
This trail is definitely on the harder side of black to clear everything especially when tired unless you descend it from cave…Lots of step ups and short rocky sections to deal with. It gets mellow for a short stretch but makes you work through most of it on both upper and lower.
Jlhart06
Although fairly moderate for much of its length, this trail is accented by some very technical sections and difficult step ups while climbing that as a whole make this more of a black diamond trail IMO.
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Nearby Trails
- Connector 0 ft
- Cave Trail 52 ft
- Gnarnia 52 ft
- Connector 68 171 ft
- Rock Garden 213 ft
Rockville Hills Regional Park
- By bkxc
Everstoke & contributors - #60941 - 2,733 views
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