77.7 miles
9,346 ft
-9,349 ft
1 mile
High Point

This is a self-supported event. The route is not marked. GPS use is highly encouraged.

Prescott Monstercross is an annual Spring ride around Prescott’s world-class trail system. And the route has evolved yet again for 2018 One big loop showcasing the Prescott Basin’s best singletrack, the diverse scenery, the slickrock, the ridgelines, more new trails, and just a little bit of Bradshaw chunk for good measure. The loop this year is harder than the old miniMonster but less demanding than the megaMonster.

The basic details:

75 miles of mostly singletrack (many of the miles are fast and flowy)
11,000 feet of climbing
Expect the ride to take between 7.5 and 11 hours
Water is available at the Willow Lake Dells boat launch, the Cayuse Trailhead in Granite Basin, White Spar Campground, and Lynx Lake Campground (assuming the spigots have all been turned on for the season). Water is also available slightly off-route at the Thumb Butte Trailhead. Download the waypoints file for the locations of these water sources.
The Lynx Lake Store near the end of the route can supply calories for the last climb if you’ve bonked!

Detailed Description
AES: Prescott Monstercross (Long) is a 78 mile expert race route located near Prescott Arizona. This mountain bike only route can be used one direction and has a extreme overall physical rating. This route includes 22 trails. This route climbs 9,346 ft with a max elevation of 6,998 ft then descends -9,349 ft.
Local Trail Association
Local trail association
Prescott Mountain Bike Alliance (www.prescottmtb.com)
Please consider joining or donating to the local riding association to support trail development & maintenance.
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Past Events

27 Reviews & Comments

  • + 0
Taipan (Aug 10, 2022 at 10:02)
Trail Legacy
Couple of wet areas in the AM.. other then that the dirt was perf
  • + 0
mcaudle (Jun 27, 2022 at 19:24)
305 is not 3.3 miles long. How do we fix this?
  • + 1
blaklabl (May 24, 2022 at 16:01)
This trail is 100% eBike legal, confirmed with local authorities. Trailforks should not remove trails with proper documentation.
  • + 0
thel1zardking (Oct 9, 2021 at 15:32)
Today (10/9/21) I found a Lezyne pump and pedro’s tire lever. DM me if it’s yours and we can meet.
  • + 1
jeffsharp (Aug 25, 2021 at 11:12)
Trail Smith Ravine
Fun trail, especially if ridden with 305! Worth the ‘occasional’ slog up Ranch-9854-299 to Spruce mountain and the top of Smith Ravine.
  • + 1
tsjolseth (May 26, 2021 at 19:37)
Elevation gain is off. More like ~400' of climbing from Badger/Ranch intersection to 69. Super fun trail. Fast, flowy, well-built, and scenic. One of the best downhills in Prescott.
  • + 0
wgwestervelt (May 9, 2021 at 19:40)
Super fun downhill - wonderful construction.
  • + 0
KelseyfJds75 (Nov 15, 2020 at 21:45)
This picture is not of the 305 Homestead.
  • + 1
NattyTread (Sep 23, 2020 at 8:24)
Great sustained climb or descent and a good out and back. Think it's 5 miles at 1000ft so it's a pedaler's descent. Also, a solid but fair climb. Great for aspiring intermediates that want to do a longer climb/descent. There are some fun technical bits and great views of the Bradshaw Mountains toward Spruce and Mt Union as well as views of Thumb Butte and Granite Mountain.
  • + 2
NattyTread (Sep 22, 2020 at 12:32)
Trail Moby
If riding from the Aspen Creek Trailhead up Aspen Creek trail Moby turns abruptly and steeply off to the right. It's for sure a fire road/double track for the first 1/3rd but then becomes and amazing hand built, viewshed heavy, single track trail until it's junction with what shows at East Copper 260 on Trailforks. Beyond that it turns into a moto like trail with some loose rocks and berms as it climbs up toward Mt Francis. You'll cross a cattle guard and then ride about another 1/2 mile before a T intersection with 9402C. I like this trail more as a climb then a descent and that's because I use it to loop with Aspen Creek 48. If you wanted an easier descent off of Mt Francis over Aspen Creek then Moby would be your best bet. As a climb you are going to have to suck it up on the first quarter of a mile or so as it's steep. I felt the investment was worth it versus climbing Copper Basin Road especially because of the trail build quality and views.
  • + 1
shreddy1 (Aug 27, 2020 at 9:05)
Trail Smith Ravine
So far this is the best downhill I’ve found in the Prescott area. Not very technical but you can get going fast!
  • + 0
iroas414 (Aug 14, 2020 at 8:15)
Great trail, fun and flowy.
  • - 1
Flanman5 (Jun 29, 2020 at 22:38)
Trail Moby
Second the below statement. Waste of time
  • + 0
TC-FLOWCLYDE (Jun 17, 2020 at 12:24)
Sweet, fast, flowy descent...sunset/night riding especially yields an unparalled Prescott city skyline views! Take a gander from the metal bench...totally worth the climb!
  • + 0
rowdycash (Apr 24, 2020 at 20:06)
Trail Smith Ravine
Fast, loose, mostly off camber turns with a few punchy climbs thrown in. Good mix of dirt and loam. Tough climb up from the bottom if ridden in reverse.
  • - 1
Nwilkes (Oct 27, 2019 at 15:30)
Trail Moby
This is not a trail, it is just lame doubletrack.
  • + 0
xandrawr (Oct 16, 2019 at 20:21)
I took a shuttle up to the p-lot at aspen creek trail head. The trail starts about 100m down the road (copper basin rd) with a fire road leading up to the trail. It’s about a mile uphill before you can start enjoying the views and speed of trail 9415. Some techy stuff but nothing to cream your pants about. The sand and loose gravel sure made some sections extra spicy.
  • + 1
TyStick3536 (Jun 21, 2019 at 18:40)
Trail 347 (Lower)
This is actually still trail 347 Lower so if you park at the Katahn Dr trailhead look for the sign with 347.
  • + 0
DanGennaro (May 31, 2019 at 20:03)
Trail Sundog Trail
As of May/June the first half sucks because someone walked their horses on it when it must’ve been wet, but after a few miles it gets good. Loved the grooves on the way back! You really get pumping and flowing! Beautiful views too!
  • + 0
ajriding (May 1, 2019 at 10:18)
Fun trail w views of the burbs. Low trees/ shrubbery mostly. All bench cut.
Fast sections with water bars/ jumps too.
  • + 0
ajriding (May 1, 2019 at 10:03)
Trail Sundog Trail
Lots of open grassland but trail has many many water bars, err, jumps so loads of fun. Best with a dropper post.
Would not be interesting going up.
  • + 0
ajriding (May 1, 2019 at 10:00)
Fun trail in either direction
  • + 0
Sabrina6 (Mar 23, 2019 at 18:04)
This was a fun trail to ride with young kids (6&Cool , enough small hills and switchbacks to keep it fun, but easy enough for everyone. Not much shade for hot/sunny days, great in winter.
  • + 0
Thomasbenko (May 30, 2018 at 8:04)
Great flow n the climb out isn’t very steep. Hook it up with Russ T for more dh flow.
  • + 1
AndyFraher (Oct 27, 2017 at 14:49)
The name of this is EMBRY-Riddle, not EMERY.
  • + 1
rwinkster PMBA (Oct 27, 2017 at 15:01)
Fixed it. Thanks
  • + 0
csheets (Aug 23, 2017 at 18:35)
On a website that ranked Prescott trails, it said this was the #1 trail in the area.... have to say I've ridden some much nicer and more fun trails in the area. This is just a couple mile grind of a climb and a semi tech decent. Nothing special. But as always opinions are like buttholes, everyone has one and they stink.


  • Race Course
  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Black Diamond
  • Route Type
  • Bike type
  • Direction
    One Direction
  • Physical rating
More Stats for AES: Prescott Monstercross (Long) mountain bike route
  • Altitude min
    5,079 ft
  • Altitude start
    5,505 ft
  • Altitude end
    5,502 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    35 miles
  • Distance down
    34 miles
  • Distance flat
    9 miles
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Trail Conditions
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  • Ideal
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Trail transparency
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Prescott's Spence Basin Trails in the Monsoon rv1 (RTF@ 4:10)
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Recent Trail Reports Along Route

Sundog Trail
Sep 28, 2022 @ 7:45am
Sep 28, 2022
Ranch Badger Connector
Sep 26, 2022 @ 8:57am
Sep 26, 2022
Some sections with weed/grass overgrowth.
West Side Story
Sep 24, 2022 @ 9:30am
Sep 24, 2022
Creeks full of water and some muddy spots. A lot of erosion of trail from monsoons rains that formed deep ruts.
Russ T Fender
Sep 24, 2022 @ 9:30am
Sep 24, 2022
Water in gullies and trail erosion from monsoon rains.
Watson Lake
Sep 23, 2022 @ 10:09am
Sep 23, 2022
more reports »
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