24.4 miles
3,905 ft
-3,919 ft
1 mile
High Point

A great spring and fall loop. Head up alexandar to the wildlife bridge over i-80, climb up to the radio towers, then take the sheep trail over to big mtn pass, then head down mormon pioneer trail and then back down highway to alexandar starting.

This route is Unsanctioned, Ride at your own Risk!

Detailed Description
Alexander, Big Mtn, MoPo Loop is a 24 mile moderately popular intermediate unsanctioned route located near Bountiful Utah. This mountain bike primary route can be used both directions and has a hard overall physical rating. This route includes 4 trails. This route climbs 3,905 ft with a max elevation of 7,840 ft then descends -3,919 ft.

12 Reviews & Comments

  • + 0
IdahomeMTB (Oct 18, 2022 at 18:55)
My favorite part of MoPi. Great little trail and definitely more green than blue. Definitely great for a decent beginner but actually still fun for advanced riders too. Just don't let the flow tempt you to rip too hard! Advanced riders might find it pretty difficult to resist the urge.
  • + 0
IdahomeMTB (Oct 18, 2022 at 18:53)
A nice little section of trail. Definitely not a blue. I take beginners here all the time.
  • + 1
sbrotherton (May 13, 2021 at 12:59)
I have mixed feelings about this trail. On the one hand, it's got beautiful views, solitude, some fun loose descents, and lots of variety. On the other hand, Jesus Christ, the climbs are brutal and unrelenting. Maybe I'm just out of shape.
  • + 0
Tavopinkbike (Apr 9, 2021 at 14:28)
Only the 2 first miles are gtg
  • + 0
rayit33 (Oct 11, 2020 at 19:41)
Definitely alot steeper than the lower trail. About 2/3 of the way up, after crossing the road, this thing gets pretty steep. Not a technical climb just a hard push. Gets a bit easier once you come to a series of switchbacks prior to reaching the top. The downhill is decent but it's a shared trail so beware of hikers, especially on the weekends.
  • + 0
rayit33 (Oct 1, 2020 at 14:42)
This part of the Mormon trail is an easier version of the upper trail. Anyone with a moderate level of fitness should be able to do it. There is some chunky parts of the trail justifying the Blue rating but not much in the way of exposure. Combined with the upper section this trail is great for working on sustained climbing. You can get going pretty fast on the descent but be careful as this trail is mixed use with hikers.
  • + 0
jamessaggy (May 24, 2020 at 16:30)
Recent snow and wet. Got lost on south end of sheep trail gwt trail, did some jungle biking. Linked from Alex crk to Mormon p-dawg great loop for the adventure.
  • + 0
ContinentalDrift (Sep 21, 2019 at 19:37)
Gorgeous trail, huge views of pretty much everything. Some stout hike-a-bike sections for sure and terribly overgrown in spots. Bring leg/arm protection, possibly a machete and a sense of adventure! Doooo ittttt!

As far as DIY clearing, I have no idea how you’d do that without real tools. Trail needs some professional love. Some effort to clear would be great, a *few* switchbacks to avoid the hikes would make this epic!
  • - 1
PiperSadler (Dec 13, 2018 at 12:30)
So did you guys go back and do some trail maintenance?? #nodignoride #SeeANeedFillANeed
  • + 0
Jslaugh (Jun 3, 2018 at 6:48)
  • + 1
todd Trailforks (Jun 26, 2017 at 8:48)
Totally, last time I rode this I was thinking man this would be sweet if I didn't have to wear these shin guards. ;-)
  • + 1
ultraviolet-catastrophe (Jun 25, 2017 at 11:31)
This is a great trail. Though overgrown in places, a small amount of maintenance could really do wonders.


  • Riding area
  • Primary Activity
    Mountain Bike
  • Other Activities
    • E-Bike
  • Difficulty rating
  • Route Type
  • eBike Allowed
  • Bike type
  • Direction
    Both Directions
  • Physical rating
More Stats for Alexander, Big Mtn, MoPo Loop mountain bike route
  • Altitude min
    5,547 ft
  • Altitude start
    5,563 ft
  • Altitude end
    5,551 ft
  • Grade max
  • Grade min
  • Distance climb
    11 miles
  • Distance down
    12 miles
  • Distance flat
    1 mile
no votes yet
Trail Conditions
  • Unknown
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  • Freeze/thaw Cycle
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  • moto (1 year)
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Recent Trail Reports Along Route

Mormon Pioneer Trail (West), Lower
Oct 15, 2022 @ 2:35pm
Oct 15, 2022
Mormon Pioneer Trail West, Upper
Oct 1, 2022 @ 8:09am
Oct 1, 2022
Sheep Trail (GWT)
Jun 12, 2022 @ 6:29am
Jun 12, 2022
Sheep Trail (gwt)
May 14, 2022 @ 2:43pm
May 14, 2022
Great shape, some spots snow patches at the top
more reports »
  • By phattyD & contributors
  • #28557 - 147 views