more stats
6.0 miles
Distance
1,531 ft
Climb
-860 ft
Descent
01:28:48
Avg time
671 ft
Altitude change
1,359 ft
Altitude min
2,729 ft
Altitude max
1,956 ft
Altitude start
2,628 ft
Altitude end
2.1%
Grade
-33.2%
Grade max
35.9%
Grade min
4 miles
Distance climb
2 miles
Distance down
1,319 ft
Distance flat
01:28:48
Avg time

Hoffnagle Loop Details

  • Activities
    • Mountain Bike
    • Gravel Bike
    • Adaptive Bike
    • Hike
    • Trail Running
  • Riding Area
    Oat Hill Mine @ Robert Louis Stevenson park
    Calistoga, California
  • Difficulty Rating
    Access Trail or Doubletrack Rate
  • Local Popularity
    35 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
    • 5 in Adaptive Biking
    • 5 in Gravel Biking
  • Trail Type
    Doubletrack
  • Bike Type
    AM, XC, Gravel, Adaptive MTB
  • Direction
    Both Directions[+]
    • Both Directions for Gravel Biking
  • Climb Difficulty
    Black Diamond
  • Physical Rating
    Hard
  • Dogs Allowed
    Yes
  • Land Owner
    Napa Land Trust

No community description for Hoffnagle Loop trail has been added yet!

AI Generated Description

Hoffnagle Loop is a 6 mile less popular doubletrack trail located near Calistoga California. This multi-use trail can be used both directions and has a hard overall physical rating with a 1,531 ft black diamond climb. On average it takes 1 hour28 minutes to complete this trail.

Tags
Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 1 rides
  • 86 miles avg distance
All
  • 10 rides
  • Last: Apr 23, 2026
update trails status or condition

Hoffnagle Loop Trail Reports

statusdatedescription
Jun 14, 2021 @ 9:32am
Jun 14, 2021
 The fire road is really overgrown. Lots of spiky plants and burrs to whip your shins the entire way down and stick to your socks and shoes.
Feb 7, 2021 @ 6:36pm
Feb 7, 2021
 Fun descents but the steep sections are no joke. Very little shade.
more »
Status:
on Jun 14, 2021
Dry
Avg: 4.13 (1 votes)
Your vote: 0

view (145)
close
      Directions to hoffnagle-loop trailhead (38.590803, -122.474095)
      View on Discover Map

      Photos

      No photos have been added for Hoffnagle Loop yet, add a photo.

      Videos

      no videos have been added for Hoffnagle Loop yet, add a video.

      Routes with this trail

      73
      Oat Mine Loop
      ★ 4.5 • 26 miles • 5,268 ft • 6 • Out & Back •
      A great place to practice some basic, all the way to advanced MTB skills, before races, or just to stay in...
      5.0 ★★★★★
      1 Ratings
      5 ★ 100%
      4 ★
      3 ★
      2 ★
      1 ★

      Reviews / Comments

      No reviews yet, be the first to write a review or ask a question.
      Use trail reports to comment on trail conditions.


      We hope you've been enjoying Trailforks!

      Create a FREE account to view all trail reviews and much more.

      Create a Free Account

      Nearby Trails

      Oat Hill Mine @ Robert Louis Stevenson park

      • By joepridmore & contributors
      • #26998 - 2,076 views

      Frequently Asked Questions

      ▼ Where is Hoffnagle Loop located?
      Hoffnagle Loop is located in Oat Hill Mine @ Robert Louis Stevenson park, Calistoga, California, United States. It is part of the Oat Hill Mine @ Robert Louis Stevenson park trail network. The trailhead is located at coordinates 38.5908, -122.4741.
      ▼ What is the elevation gain for Hoffnagle Loop?
      Hoffnagle Loop has 1,531 ft of elevation gain. The trail has 860 ft of elevation descent. The elevation ranges from 1,359 ft to 2,729 ft.
      ▼ Is Hoffnagle Loop a point to point trail?
      Hoffnagle Loop is not a point to point trail. The direction is Both Directions. The trail type is doubletrack.
      ▼ How long is Hoffnagle Loop?
      Hoffnagle Loop is 6.0 miles long. The trail type is doubletrack.
      ▼ Are dogs allowed on Hoffnagle Loop?
      Yes, dogs are allowed on Hoffnagle Loop. Please keep dogs on a leash where required and clean up after them.
      ▼ How do I access Hoffnagle Loop? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Hoffnagle Loop are: View all parking locations in the area.
      ▼ How long does it take to ride Hoffnagle Loop?
      Based on recorded activities, it takes an average of 1 hour 20 minutes to ride Hoffnagle Loop. The trail is 6.0 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Hoffnagle Loop?
      Hoffnagle Loop is a less popular trail with lighter traffic. There have been 132 recorded activities on this trail. The trail has received 145 check-ins. View recent activity on this trail.

      Hit the Trail

      Open in App

      Get this trail on your phone instantly.
      open trail in app

      Download Trail

      Save to wishlist, Garmin & download.
      save the trail

      Find Related Routes

      Find routes and users activities that include this trail.
      find routes for this trail

      You must enter a description before submitting.