63.3 miles
6,363 ft
-6,384 ft
2 miles
High Point

**NOTE: This is the 2017 version and the route tends to change each year.**

In the usual fashion, the race this year, 2017, will be different and be a little like the Prescott Monster Cross…that is, it will be a loop around Flagstaff We’ll use the Flagstaff Loop Trail augmented with some of the good singletrack on Mt. Elden and the southern flanks of the peaks. There are gas stations for those needing water or snacks at mile 21 (Conoco station right before the tunnel under highway 89…look left), mile 51 off route up hwy 180 about a ¼ mile, and at mile 57, on route 66 at the left turn onto Woody Mtn Rd.

If you are unable to navigate to a gpx file, you may very well want to stay home. There are several social trails and a few faint scratches in the dirt used for this route. Yes, you may want to wear some HAB friendly shoes for this.

Detailed Description
AES: Aspen Asphyxiation is a 63 mile expert race route located near Flagstaff Arizona. This mountain bike only route can be used one direction and has a moderate overall physical rating. This route includes 12 trails. This route climbs 6,363 ft with a max elevation of 8,869 ft then descends -6,384 ft.
Local Trail Association
Local trail association
Flagstaff Biking Organization (flagstaffbiking.org)
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Past Events

12 Reviews & Comments

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  • Race Course
  • Riding area
  • Primary Activity
    Mountain Bike
  • Difficulty rating
    Black Diamond
  • Route Type
  • Bike type
  • Direction
    One Direction
  • Physical rating
  • Ridelogs
More Stats for AES: Aspen Asphyxiation mountain bike route
  • Avg time
    10 hr 17 min
  • Altitude min
    6,634 ft
  • Altitude start
    6,990 ft
  • Altitude end
    6,972 ft
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    27 miles
  • Distance down
    29 miles
  • Distance flat
    7 miles
Avg: 1 (1 votes)
Trail Conditions
  • Unknown
  • Snow Groomed
  • Snow Packed
  • Snow Covered
  • Snow Cover Partial
  • Freeze/thaw Cycle
  • Icy
  • Prevalent Mud
  • Wet
  • Variable
  • Ideal
  • Dry
  • Very Dry
Trail Flow (Ridden Direction)
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  • > 80%
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  • < 50%
  • bi-directional trail
  • no data
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  • Downhill Primary
  • Both Directions
  • Uphill Primary
  • Uphill Only
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Radar Time
x Activity Recordings
Trailforks users anonymized public ridelogs from the past 6 months.
  • mountain biking recent
  • mountain biking (>6 month)
  • hiking (1 year)
  • moto (1 year)
Activity Recordings
Trailforks users anonymized public skilogs from the past 12 months.
  • Downhill Ski
  • Backcountry Ski
  • Nordic Ski
  • Snowmobile
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Trail transparency
Flagstaff On The Rocks - MTB Fort Valley
Flagstaff On The Rocks - MTB Fort Valley
16:33 | 147 | comments: 0 | favs:
Apr 10, 2022

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  • By schillingsworth TRAILFORKS HTA & contributors
  • #6347 - 1,305 views