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2,629 ft
Distance
90 ft
Climb
-121 ft
Descent
00:05:05
Avg time
-31 ft
Altitude change
261 ft
Altitude min
368 ft
Altitude max
292 ft
Altitude start
261 ft
Altitude end
-1.171%
Grade
-29.776%
Grade max
14.975%
Grade min
992 ft
Distance climb
1,407 ft
Distance down
230 ft
Distance flat
00:05:05
Avg time
Upper Tilley Trail Details
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Activities
- Mountain Bike
- Hike
- Trail Running
-
Riding AreaRockville Hills Regional Park
Fairfield, California -
Difficulty Rating
-
Voted DifficultyBlack Diamond (1 vote)
-
Local Popularity70 in Mountain Biking [+]
- 55 in Trail Running
- 75 in Hiking
-
Global Ranking
-
State Ranking
-
Trail TypeSingletrack
-
DirectionBoth Directions
-
Dogs AllowedYes
No community description for Upper Tilley Trail trail has been added yet!
AI Generated Description
Upper Tilley Trail is a 2,629 ft popular black diamond difficulty singletrack trail located near Fairfield California. This mountain bike primary trail can be used both directions. On average it takes 5 minutes to complete this trail.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 28 rides
- 8 miles avg distance
All
- 370 rides
- Last: Oct 18, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
Upper Tilley Trail 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
Trailforks scans activity logs 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
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- Videos
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.
Think of this as a heatmap, more activities = more kinetic energy = warmer colors.
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- popular
- less popular
- not popular
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Activity Recordings
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Activity Recordings
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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 users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Slope Aspect
Direction the slope faces
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Directions to upper-tilley-trail trailhead
(38.242629, -122.133591)
Photos
3 more »
Routes with this trail
★ 4.0 • 10 miles • 1,488 ft • 25 • Loop •
Moderate Route that hits some of the easier single black trails at Rockville
★ 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
Reign51
Good singletrack trail with isolated technical sections. The top section that parallels the Manzanita trail is a good ride in either direction, and cleanable by an intermediate to advance rider. The lower section, from the Upper / Lower Tilly Connecter intersection down to Lower Tilly, is best ridden in the downhill direction due to 2 to 3 steep rock sections that are likely unclimable, the middle of which puts you into an unbanked 90 degree right hand turn. Rock sections contain no major drops, but are steep and chunky. An intermediate rider would enjoy this challenge, most advanced riders will likely be able to push the speed limit.
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Nearby Trails
- Fire Road 108 ft
- Tilley Connector 125 ft
- Lower Tilley Loop 476 ft
- Old Ranch Paved Road 584 ft
- Wild Turkey Run 748 ft
Rockville Hills Regional Park
- By bkxc
Everstoke & contributors - #62175 - 1,985 views
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