more stats
1.0 mile
Distance
215 ft
Climb
-117 ft
Descent
00:08:39
Avg time
99 ft
Altitude change
985 ft
Altitude min
1,160 ft
Altitude max
1,062 ft
Altitude start
1,160 ft
Altitude end
1.791%
Grade
-18.126%
Grade max
11.109%
Grade min
3,387 ft
Distance climb
1,860 ft
Distance down
266 ft
Distance flat
00:08:39
Avg time

57 Details

  • Activities
    • Mountain Bike
    • E-Bike
    • Gravel Bike
    • Adaptive Bike
    • Hike
    • Trail Running
  • Riding Area
    Frank G. Bonelli Park
    San Dimas, California
  • Difficulty Rating
  • Local Popularity
    75 in Mountain Biking heatmap [+]
    • 80 in E-Biking
    • 100 in Trail Running
    • 65 in Hiking
    • 5 in Adaptive Biking
    • 5 in Gravel Biking
  • Global Ranking
    #94791 in Mountain Biking [+]
    • #35694 in E-Biking
    • #83494 in Trail Running
    • #334087 in Hiking
    • #4756 in Adaptive Biking
    • #1949 in Gravel Biking
  • State Ranking
    #3,262 in Mountain Biking · California [+]
    • #786 in E-Biking
    • #4,068 in Trail Running
    • #14,294 in Hiking
    • #296 in Adaptive Biking
    • #167 in Gravel Biking
  • Trail Type
    Dirt/Gravel Road
  • Bike Type
    Gravel, Adaptive MTB
  • Direction
    Downhill Primary
  • Dogs Allowed
    Yes
  • eBike Allowed

Super wide and smooth trail for rolling easy descent.

Tags

Local Trail Association

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 1 rides
  • 12 miles average
6 Months
  • 25 rides
  • 12 miles avg distance
All
  • 211 rides
  • Last: Nov 11, 2026
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update trails status or condition

57 Trail Reports

Status:
on Nov 9, 2025
Ideal
Avg: 3.61 (7 votes)
Your vote: 0

view (1,861)
close
      Directions to 57-89019 trailhead (34.077932, -117.812331)

      Photos

      1 more »
      mtb
      57
      270 |
      Mar 1, 2012 @ 7:59pm
      Mar 1, 2012

      Videos

      3 more »
      Frank G. Bonelli Park - Mountain Bike Loop
      mtb
      28:19 | 276 | Jul 2, 2024 , San Dimas
      Introductin the Magura HC Lever Upgrade
      mtb
      0:55 | 67 | Jan 31, 2017 , San Dimas
      Introductin the Magura HC Lever Upgrade
      mtb
      0:55 | 411 | Jan 31, 2017 , San Dimas

      Routes with this trail

      more »
      15 miles • 1,653 ft • 11 • Loop •
      This route is originally intended for adaptive riders, but anyone can do it. It avoids certain obstacles...
      ★ 3.0 • 10 miles • 1,371 ft • 18 • Loop •
      The 10 mile Nurburgring of the West Coast, taking you round the whole outside perimiter of the Bonelli...
      10 miles • 1,422 ft • 7 • Loop •
      The 10 mile Nurburgring of the West Coast, taking you round the whole outside perimiter of the Bonelli...
      3.3 ★★★★★
      7 Ratings
      5 ★
      4 ★ 29%
      3 ★ 71%
      2 ★
      1 ★

      Reviews / Comments

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      • By derkderkallTF Pro & contributors
      • #89019 - 1,924 views

      Frequently Asked Questions

      ▼ Where is 57 located?
      57 is located in Frank G. Bonelli Park, San Dimas, California, United States. It is part of the Frank G. Bonelli Park trail network. The trailhead is located at coordinates 34.07793, -117.81233.
      ▼ How hard is 57?
      57 is rated as Green difficulty. The average grade is 1.791%.
      ▼ What is the elevation gain for 57?
      57 has 215 ft of elevation gain. The trail has 117 ft of elevation descent. The elevation ranges from 985 ft to 1,160 ft.
      ▼ Is 57 a point to point trail?
      57 is not a point to point trail. The direction is Downhill Primary. The trail type is dirt/gravel road.
      ▼ How long is 57?
      57 is 1.0 mile long. The trail type is dirt/gravel road.
      ▼ Are dogs allowed on 57?
      Yes, dogs are allowed on 57. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride 57?
      Based on activity log data, the most popular months to ride 57 are:
      • April (9 activities)
      • January (8 activities)
      • February (8 activities)
      Check the reports page for current trail conditions.
      ▼ How do I access 57? Where is the closest parking trailhead?
      The closest parking and trailhead locations to 57 are: View all parking locations in the area.
      ▼ How long does it take to ride 57?
      Based on recorded activities, it takes an average of 9 minutes to ride 57. The trail is 1.0 mile long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is 57?
      57 is a very popular trail. There have been 1,911 recorded activities on this trail. The trail has received 1,861 check-ins. View recent activity on this trail.

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