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1.3 miles
Distance
227 ft
Climb
-220 ft
Descent
00:14:35
Avg time
7 ft
Altitude change
127 ft
Altitude min
294 ft
Altitude max
195 ft
Altitude start
200 ft
Altitude end
0.1%
Grade
-31.9%
Grade max
28.2%
Grade min
2,927 ft
Distance climb
2,441 ft
Distance down
1,266 ft
Distance flat
00:14:35
Avg time
Lower Tilley Loop Details
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Activities
- Mountain Bike
- Hike
- Trail Running
-
Riding AreaRockville Hills Regional Park
Fairfield, California -
Difficulty Rating
-
Voted DifficultyBlack Diamond (2 votes)
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Local Popularity50 in Mountain Biking [+]
- 5 in Trail Running
- 5 in Hiking
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Global Ranking
-
State Ranking
-
Trail TypeSingletrack
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Climb DifficultyBlack Diamond
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Physical RatingModerate
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Dogs AllowedYes
No community description for Lower Tilley Loop trail has been added yet!
AI Generated Description
Lower Tilley Loop is a highly rated 1 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 227 ft black diamond climb. On average it takes 14 minutes to complete this trail.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 6 rides
- 6 miles avg distance
All
- 186 rides
- Last: Oct 17, 2026
Lower Tilley 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
- 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
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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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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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BC Backroad Status
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Directions to lower-tilley-loop trailhead
(38.243930, -122.133620)
Photos
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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
pistol2ne
It's a black because of the climbing technical features. Doable if you're in shape and time your peddles right. Not steep but definitely worthy of rating.
Reign51
Solid singletrack trail with isolated technical features anywhere from 3 yard rock / root step up style obstacles to 7 to 10 yard long exposed rock sections.
Decently challenging ride in either direction for intermediate to advanced riders who can ride Tamo / JM / Corte Madera trails. Very strong technical riders (read climbers) may find it easy. Wouldn't recommend this trail to any beginner to intermediate riders who do not have some rock riding experience unless they are happy to walk what they can't ride or are riding with someone familiar with the trail.
Decently challenging ride in either direction for intermediate to advanced riders who can ride Tamo / JM / Corte Madera trails. Very strong technical riders (read climbers) may find it easy. Wouldn't recommend this trail to any beginner to intermediate riders who do not have some rock riding experience unless they are happy to walk what they can't ride or are riding with someone familiar with the trail.
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Nearby Trails
- Upper Tilley Trail 476 ft
- Tilley Connector 479 ft
- Wild Turkey Run 535 ft
- Fire Road 551 ft
- Bay Area Ridge Trail 594 ft
Rockville Hills Regional Park
- By bkxc
Everstoke & contributors - #60938 - 2,664 views
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