14.7 miles
2,608 ft
-2,606 ft
898 ft
High Point

Medium fun loop with some of the best and most scenic single track in the area included.

Detailed Description
Adjusted Loop with Manley Gulch is a 15 mile moderately popular intermediate route located near Caspar California. This mountain bike only route and has a moderate overall physical rating. This route includes 9 trails. This route climbs 2,608 ft with a max elevation of 898 ft then descends -2,606 ft.

15 Reviews & Comments

  • + 1
powturn (Apr 12, 2022 at 10:54)
Trail Steam Donkey
Bottom line: problem with this "trail" is it is just a connecting jeep road with two or three turns with berms burned into shoulder. Signage is indeed mostly nonexistent in Jackson Demo. Giving forest service roads colorful trail-like names adds to the confusion. I was expecting far more single-track in the loop I rode. Nothing off of Steam Donkey were anything I'd pedal back for.
  • + 0
Chasebeck734 (Oct 3, 2021 at 21:42)
Trail Big Tree
The “big tree” is right off the trail where steam donkey connects to this one. There’s a sign, little trail off to the southeast you can walk or ride down and see, well, a big tree. I mean all the trees are big here but this one is T H I C C . Also, this trail is gradual and flowy single track carved into side of hills back to the forest floor, would recommend. Wouldn’t be horrible going up either.
  • + 1
Chasebeck734 (Oct 3, 2021 at 21:33)
Trail Steam Donkey
It connects eagles roost and big tree, sort of boring rolling road like terrain in my opinion. It’s necessary to go on if you want to enjoy the downs or suffer up the single track on the two other trails this connects to
  • + 0
Chasebeck734 (Sep 25, 2021 at 22:02)
Easy both ways. Works as a good connector to the other stuff. Easy to carry speed
  • + 0
Chasebeck734 (Sep 25, 2021 at 22:00)
Trail Confusion
Not much climbing either way, goes good both directions. Fun single track.
  • + 0
Chasebeck734 (Sep 25, 2021 at 21:59)
Trail Gas Cap
Yes it’s fun. I like it. Try to hit it at least every other ride here, either direction, although it’s more fun south to north due to the elevation
  • + 0
Chasebeck734 (Sep 25, 2021 at 21:58)
Trail Boiler
Connects well with endo and oh no. Going down of course. This trail tho you could make work going up, not too steep.
  • + 1
marlinmajnoon (Aug 15, 2021 at 22:44)
This is an easy trail that parallels the dirt access road. It is single track and gets a lot of use in both directions. It is not clear why it is rated blue. It should be green. In any case, beats riding on the dirt road.
  • + 1
Kyleponga (May 24, 2021 at 21:28)
Trail Boiler
A Super fun flowy downhill that you can lap easily with the fire road access. Super fun at flowy up top, then the grade mellows out and is a bit pedaly at the end.

Well worth it!
  • + 1
restabro (May 10, 2020 at 18:07)
Trail Steam Donkey
First time on this trail. Signage is not the best. For example, a sign at the intersection of what I now believe to be Steam Donkey trail and Eagles Roost trails calls Eagle Roost trail "Old Jeep Trail to Camp 2" and indicates that Steam Donkey trail continues to the north. I continued to the north expecting to find Eagles Roost trail and quickly got lost. This is more of an old logging road than a trail, but still nice overall.
  • + 1
b0bg (May 10, 2020 at 18:37)
Trail Steam Donkey
Signage in general is not great in Jackson Demo Forest. After a good deal of riding and exploration this becomes part of the places "charm", but it makes some of the first rides a bit of an adventure. It may sound old school but there's a great book of trail maps (www.trailforks.com/localproducts/61) that I found super helpful in getting a handle on the trails. Your other option is frequent GPS checking (if it works in the thick forest cover) and a lot of back tracking while using the online maps.
  • + 0
taospinner (Sep 23, 2018 at 22:22)
Trail Big Tree
Where are all the "Big Trees"?
  • + 0
vicalcazar (Jul 26, 2018 at 12:08)
Trail closed for logging July 25, 2018.
  • + 0
fiery1 (May 26, 2018 at 12:25)
Trail Boiler
The best section in the system!
  • + 0
Tonymosa (Apr 19, 2018 at 19:28)
Trail Boiler
One of my favorite rides ever. From the top, of course!

Trails in Route


  • Primary Activity
    Mountain Bike
  • Difficulty rating
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  • Bike type
    AM, XC
  • Physical rating
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More Stats for Adjusted Loop with Manley Gulch mountain bike route
  • Altitude min
    41 ft
  • Altitude start
    557 ft
  • Altitude end
    561 ft
  • Grade max
  • Grade min
  • Distance climb
    6 miles
  • Distance down
    6 miles
  • Distance flat
    3 miles
no votes yet
Trail Conditions
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Trail transparency
Good Brakes
Good Brakes
trail: Boiler
72 | comments: 0 | favs:
Feb 26, 2022
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Endo O-No Fury III Boiler Trail Guide
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trail: Boiler
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Recent Trail Reports Along Route

Parallel Action
Aug 27, 2022 @ 9:06am
Aug 27, 2022
Gas Cap
Jul 23, 2022 @ 4:33pm
Jul 23, 2022
Jul 23, 2022 @ 4:33pm
Jul 23, 2022
Jun 21, 2022 @ 2:37pm
Jun 21, 2022
The fun just keeps coming..
Big Tree
Jun 21, 2022 @ 2:37pm
Jun 21, 2022
What an awesome trail, enjoyed the small stairs..
more reports »
  • By Xanthe & contributors
  • #26545 - 844 views