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26.9 miles
Distance
1,901 ft
Climb
-1,891 ft
Descent
1 mile
High Point
8 ft
Altitude change
6,098 ft
Altitude min
6,116 ft
Altitude start
6,125 ft
Altitude end
-43.9%
Grade max
51.8%
Grade min
12 miles
Distance climb
11 miles
Distance down
4 miles
Distance flat
This is the 2023 Alien Run Mountain Bike Race Course for Expert / Pro riders.
Detailed Description
Expert / Pro Course is a 27 mile moderately popular intermediate route located near Aztec New Mexico. This mountain bike only route. This route includes 5 trails. This route climbs 1,901 ft with a max elevation of 6,775 ft then descends -1,891 ft.
Trail Issues on Route
- Minor Issue / Yellow: 1 trail (newest: Dec 20, 2025)
Local Trail Association
Please consider joining or donating to the local riding association to support trail development & maintenance.
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Stats
-
Distance27 miles
-
Avg time5 hr 27 min
-
Altitude change8 ft
-
Altitude min6,098 ft
-
Altitude start6,116 ft
-
Altitude end6,125 ft
-
Climb1,901 ft
-
Descent-1,891 ft
-
Grade max-43.9%
-
Grade min51.8%
-
Distance climb12 miles
-
Distance down11 miles
-
Distance flat4 miles
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Trails in Route
| 6 miles | |||||
| 3 miles | |||||
| 4 miles | |||||
| 2,126 ft |
Details
-
Riding area
-
Primary ActivityMountain Bike
-
Difficulty ratingBlue
close
3D
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)
Trailforks scans users activity logs to determine the most popular direction each trail is ridden. A good flowing trail network will have most trails flowing in a single direction according to their intension.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
The colour categories are based on what percentage of users are riding a trail in its intended direction.
- > 96%
- > 90%
- > 80%
- > 70%
- > 50%
- < 50%
- bi-directional trail
- no data
Trail Last Used
Trailforks scans activity logs to determine the last time a trail was ridden.
- < 2 days
- < 1 week
- < 2 weeks
- < 1 month
- < 6 months
- > 6 months
Trail Ridden Direction
The intended direction a trail should be ridden.
- Downhill Only
- Downhill Primary
- Both Directions
- Uphill Primary
- Uphill Only
- One Direction
Contribute Details
Colors indicate trail is missing specified detail.
- Description
- Photos
- Description & Photos
- Videos
Trail Popularity ?
Trailforks scans activity logs to determine which trails are ridden the most in the last 9 months.
Trails are compared with nearby trails in the same city region with a possible 25 colour shades.
Think of this as a heatmap, more activities = more kinetic energy = warmer colors.
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- popular
- less popular
- not popular
ATV/ORV/OHV Filter
Max Vehicle Width
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US Cell Coverage
Legend
Radar Time
Activity Recordings
Trailforks uses anonymized public activity data.
?
Activity Recordings
Trailforks uses anonymized public activity data.
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Winter Trails
Warning
A routing network for winter maps does not exist. Selecting trails using the winter trails layer has been disabled.
Missing Trails
Most Popular
Least Popular
Trails are colored based on popularity. The more popular a trail is, the more red. Less popular trails trend towards green.
Jump Magnitude Heatmap
Heatmap of where users jump on trails. Zoom in to see individual jumps, click circles to view jump details.
BC Backroad Status
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Slope Aspect
Direction the slope faces
Trails Deemphasized
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Only show trails with no bike usage.
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Trail transparency
- Singletrack
- Unpaved
Photos
Videos
mtb
Alien Run Green Loop (Beginner MTB Trail) | Aztec, NM | 6.1 Miles + Trailhead Amenities | 4K
trail: Alien Run Loop
42:23 | 272 | comments: 0 | favs:
Feb 6, 2026
Recent Trail Reports Along Route
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- By whiskeybravo
ATOS & contributors - #50255 - 529 views
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