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4,548 ft
Distance
259 ft
Climb
-380 ft
Descent
00:07:20
Avg time
-121 ft
Altitude change
815 ft
Altitude min
987 ft
Altitude max
987 ft
Altitude start
865 ft
Altitude end
-59.983%
Grade max
39.695%
Grade min
1,654 ft
Distance climb
2,701 ft
Distance down
194 ft
Distance flat
00:07:20
Avg time
B-17 Trail Details
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Activities
- Mountain Bike
- E-Bike
- Hike
- Trail Running
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Riding AreaTamarancho
Fairfax, California -
Difficulty Rating
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Voted DifficultyBlue (4 votes)
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Local Popularity95 in Mountain Biking [+]
- 80 in E-Biking
- 60 in Trail Running
- 65 in Hiking
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Global Ranking
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Trail TypeSingletrack
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Bike TypeXC
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DirectionBoth DirectionsPopular Direction Shown
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Climb DifficultyBlue
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Physical RatingModerate
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Dogs AllowedYes
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eBike Allowed
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Land OwnerBoy Scouts of America
A Fun fast flowy trail that is made from classic redwood dirt. Trail named after the b17 crash on whites hill during the cold war.
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 7 rides
- 14 miles average
6 Months
- 199 rides
- 14 miles avg distance
All
- 2,184 rides
- Last: Jun 19, 2026
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
May | June | July | August |
September | October | November | December |
B-17 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 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
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- < 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
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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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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.
BC Backroad Status
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Slope Aspect
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Directions to b17-trail trailhead
(37.991020, -122.622450)
Photos
6 more »
Trail Lists
Routes with this trail
★ 5.0 • 14 miles • 2,406 ft • 7 •
Tamarancho Ride from Fairfax. Maiden Voyage
★ 3.5 • 7 miles • 1,254 ft • 10 • Loop •
Great loop around Tamarancho Trail system!
★ 3.5 • 19 miles • 2,965 ft • 11 • Loop •
Begin the Tamarancho loop via Alchemists Trail then take Dead Heifer Fire Road at the bottom of the Endor...
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Nearby Trails
- Blue Ridge Fire Road 0 ft
- Saddlecut Trail 427 ft
- Wagon Wheel Trail 4,304 ft
- Broken Dam Trail 4,537 ft
- Burnt Tree Fire Road 4,541 ft
- By TheBikeNerd
NWTA & contributors - #20431 - 8,909 views
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Frequently Asked Questions About B-17 Trail
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Where is B-17 Trail located?
B-17 Trail is located in Tamarancho, Fairfax, California, United States. It is part of the Tamarancho trail network. The trailhead is located at coordinates 37.99102, -122.62245.
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How hard is B-17 Trail?
B-17 Trail is rated as Blue difficulty. The physical rating is Moderate. The climb difficulty is rated Blue.
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What is the elevation gain for B-17 Trail?
B-17 Trail has 259 ft of elevation gain. The trail has 380 ft of elevation descent. The elevation ranges from 815 ft to 987 ft.
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Is B-17 Trail a point to point trail?
B-17 Trail is not a point to point trail. The direction is Both Directions. The trail type is singletrack.
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