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![map legend]()
Service Road Atlas is a free to use, community-driven service for viewing and creating reports on the numerous back-country service roads around B.C. and Alberta.
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SaveAZTEC’S MOUNTAIN BIKING TRAILS RANKED AMONG THE FOUR CORNERS’ BEST
For the truly adventurous, there is no greater thrill than mountain biking in Aztec’s high desert terrain. These landscapes offer technical slickrock, rocky elevation climbs and tumbling downhills, some of the finest single-track trails in the Southwest.
The Alien Run Trail System provides mountain bikers with the opportunity to experience a variety of trails in a high desert landscape. The trails are named for a rumored UFO crash site in the area.
The trails here provide a wide variety of experiences including; playful and flowing single track, exposed sections along the tops of escarpments, slickrock play areas, and loose and rocky challenging trail with significant changes in elevation.
The Alien Run Trail System is found in the southwestern reaches of the Colorado Plateau, a large physiographic region dominated by sandstone formations and pinyon-juniper forests.
One of the Bureau of Land Management's "Backyard to Backcountry" treasures, information on the Alien Run Trails-Super Loop was developed between IMBA and the Farmington, NM, BLM office to provide world-class riding experiences. IMBA's data on the trail includes elevations, ratings, current conditions, photos, and comments.
For the truly adventurous, there is no greater thrill than mountain biking in Aztec’s high desert terrain. These landscapes offer technical slickrock, rocky elevation climbs and tumbling downhills, some of the finest single-track trails in the Southwest.
The Alien Run Trail System provides mountain bikers with the opportunity to experience a variety of trails in a high desert landscape. The trails are named for a rumored UFO crash site in the area.
The trails here provide a wide variety of experiences including; playful and flowing single track, exposed sections along the tops of escarpments, slickrock play areas, and loose and rocky challenging trail with significant changes in elevation.
The Alien Run Trail System is found in the southwestern reaches of the Colorado Plateau, a large physiographic region dominated by sandstone formations and pinyon-juniper forests.
One of the Bureau of Land Management's "Backyard to Backcountry" treasures, information on the Alien Run Trails-Super Loop was developed between IMBA and the Farmington, NM, BLM office to provide world-class riding experiences. IMBA's data on the trail includes elevations, ratings, current conditions, photos, and comments.
Primary Trail Type: Cross-Country
Land Status: Conservation Reserve
Land Manager: Bureau of Land Management (Farmington Field Office)
google parking directions Access Info:
Headed North on Hwy 550, turn right at MM 164 and stay to the left. Continue down the dirt road until you reach CR 2575, then turn left. At that intersection is a Natural Gas processing station, you can't miss it. Head up to the top of the hill, cross the cattle guard, make an immediate right down the one lane road to the trail head.
Disclaimer:
WATER. WATER, WATER.
Links
Region Supporters & Maintainers
Activities Click to view
- Mountain Bike
10 trails
- Hike
10 trails
- Trail Running
10 trails
Region Details
- 2
- 1
- 5
- 1
Region Status
Open as of Feb 27, 2026
Stats
- Avg Trail Rating
- Trails (view details)
- 9
- Trails Mountain Bike
- 10
- Trails Hike
- 10
- Trails Trail Running
- 10
- Total Distance
- 21 miles
- Total Descent Distance
- 5 miles
- Total Descent
- 1,954 ft
- Total Vertical
- 687 ft
- Highest Trailhead
- 6,805 ft
- Reports
- 166
- Photos
- 70
- Ridden Counter
- 2,864
Popular Alien Run Mountain Biking Trails
• 100 ★ 4.1 • 9 miles • 667 ft • 697 •
This trail is in Hart Canyon, at the site of a supposed UFO crash from back in the 40's. This is a ten mile one-way loop that takes you in and out of the Juniper trees, and along the slick rock shelves of the canyon. At the Eastern end...
• 100 ★ 4.5 • 4,770 ft • 30 ft • 581 •
Popular blue difficulty singletrack. This multi-use trail can be used both directions and has a moderate overall physical rating with a 30 ft green climb. On average it takes 2 minutes to complete this trail.
• 95 ★ 3.4 • 7 miles • 938 ft • 512 •
is an extension of the Alien Trail loop, the two of which combined equal a 16-mile ride. Due to the length of the combined loops and the endurance required for this trail (it's an unrelenting intermediate trail without much variation),...
• 90 ★ 5.0 • 2,546 ft • 19 ft • 294 •
This trail is in Hart Canyon, at the site of a supposed UFO crash from back in the 40's. This is a five mile one-way loop that takes you in and out of the Juniper trees, and along the slick rock shelves of the canyon. Taking this...
• 85 ★ 4.2 • 3 miles • 218 ft • 90 •
Very fun trail and adds a secondary option to return in from . Est. in 2020. Very new addition to the Aline Run Trail system. Created by BLM Farmington Field Office with assistance on construction from Aztec Trails and Open Space and...
• 85 ★ 5.0 • 896 ft • 29 ft • 59 •
Popular blue difficulty singletrack. This multi-use trail can be used both directions.
Alien Run Mountain Bike Routes
Alien Run Super Loop Featured
16 miles • 1,127 ft • 2 • Loop •
The Super Loop combines the and trails. It has a fair amount of climbing and descending and provides a...
11 miles • 576 ft • 3 •
The 2023 Beginner 11 Mile Couse for the Mountain Bike Race
27 miles • 1,901 ft • 5 •
This is the 2023 Mountain Bike Race Course for Expert / Pro riders.
Photos of Alien Run Mountain Bike
Videos of Alien Run Mountain Bike
trail: Alien Run
0:09 |
56 |
Oct 24, 2021
trail: Alien Run Loop
0:09 |
116 |
Oct 24, 2021
trail: Alien Run Loop
0:49 |
267 |
Dec 10, 2018
trail: Alien Run Loop
0:54 |
108 |
Feb 7, 2018
trail: Alien Run Loop
42:23 |
86 |
Feb 6, 2026 , Aztec
youtuber
![Alien Run Loop]()
trail: Alien Run Loop
10:28 |
284 |
Feb 7, 2024 , Aztec
trail: Alien Run Loop
9:16 |
752 |
May 26, 2019 , Aztec
youtuber
![Alien ???? Run Super Loop Bike Trail]()
trail: Alien Run Loop
10:59 |
883 |
Jun 20, 2018 , Aztec
Recent Trail Reports
| status | trail | date | condition | info | user |
|---|---|---|---|---|---|
| Alien Run Loop | Dec 20, 2025 @ 1:21pm (America/Denver) Dec 20, 2025 | Variable | rustypharaoh | ||
| Outer Limits | Feb 28, 2026 @ 10:13pm (America/Denver) Feb 28, 2026 | Dry | Mrtrickdk | ||
| Alien Run | Feb 8, 2026 @ 3:18pm (America/Denver) Feb 8, 2026 | Dry | HisHolyDudenurse | ||
| Area 51 | Feb 28, 2025 @ 10:36pm Feb 28, 2025 | Ideal | EliMfgFs4 | ||
| The Black Hole | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks | ||
| Parking Area Outline | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks | ||
| Area 51 Connector | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks | ||
| Area 51 back onto Outer Limits Connect | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks | ||
| Area 51 Access Road | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks | ||
| Alien Run Shortcut | Feb 7, 2025 @ 7:50pm Feb 7, 2025 | Ideal | WillieJacobsz Trailforks |
Activity Feed
| username | action | type | title | date |
|---|---|---|---|---|
| LlNyijQ8 | wishlist | trail | activity #96807390 | Jun 12, 2026 @ 8:45am Jun 12, 2026 |
| AirBike6 | wishlist | region | activity #95793754 | May 29, 2026 @ 12:02pm May 29, 2026 |
| espanser | wishlist | trail | activity #94203570 | May 7, 2026 @ 1:13am May 7, 2026 |
| ogston | ridden | route | activity #93710009 | Apr 30, 2026 @ 7:00am Apr 30, 2026 |
| czadagoat | wishlist | route | activity #93595746 | Apr 28, 2026 @ 11:39am Apr 28, 2026 |
Recent Comments
| username | type | title | comment | date |
|---|---|---|---|---|
| report | Super bad mud !! | Jan 7, 2026 @ 3:17pm Jan 7, 2026 | ||
| trail | Stopped here passing through while headed... | Apr 16, 2025 @ 12:35pm Apr 16, 2025 | ||
| trail | Extremely boring super easy green early season... | Mar 2, 2024 @ 10:55am Mar 2, 2024 | ||
| trail | There's a small old wooden bridge. Be careful... | Nov 10, 2023 @ 8:59pm Nov 10, 2023 | ||
| trail | Nice slickrock features. Not too hard, not too... | Nov 10, 2023 @ 8:52pm Nov 10, 2023 |
Nearby Areas
| name | distance | ||||
|---|---|---|---|---|---|
| Mountain View | 3 | 4 | 5.3 km | ||
| Aztec Area BLM Moto Trails | 1 | 4 | 9.7 km | ||
| Lake Farmington Recreation Area | 1 | 15.4 km | |||
| Glade Run Recreation Area | 12 | 22 | 3 | 15.8 km | |
| San Juan College Trails | 18 | 23 | 8 | 19.5 km |
Activity Type Stats
| activitytype | trails | distance | descent | descent distance | total vertical | rating | global rank | state rank | photos | reports | routes | ridelogs |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mountain Bike | 10 | 21 miles | 1,955 ft | 5 miles | 686 ft | #4,470 | #1,570 | 72 | 166 | 8 | 3,023 | |
| Hike | 10 | 21 miles | 1,955 ft | 5 miles | 686 ft | #9,592 | #3,696 | 166 | 3 | 24 | ||
| Trail Running | 10 | 21 miles | 1,955 ft | 5 miles | 686 ft | #8,727 | #3,084 | 166 | 3 | 31 |
Frequently Asked Questions About Alien Run
▼
What are the highest rated mountain biking trails in Alien Run?
The highest rated mountain biking trails in Alien Run are:
- The Black Hole (4.2/5)
- Area 51 Connector (4.1/5)
- Alien Run Shortcut (4.1/5)
- Alien Run (4.1/5)
- Alien Run Loop (4.1/5)
▼
What is the best time of the year to ride in Alien Run?
Based on ride log data, the most popular months to ride in Alien Run are:
- May (42 activities)
- October (38 activities)
- April (33 activities)
▼
Where can I park to ride in Alien Run?
There are 2 parking locations listed in Alien Run. The most popular parking spots are:
▼
What is the longest trail in Alien Run?
The longest trail in Alien Run is Alien Run Loop at 8.5 miles. View all trails sorted by distance.
Trails
Points of Interest
- By schillingsworth
TRAILFORKS HTA & contributors - Admins: ATOS
- #23387 - 4,780 views
- alien run activity log | embed map of Alien Run mountain bike trails | alien run mountain biking points of interest polygons
Downloading of trail gps tracks in kml & gpx formats is enabled for Alien Run.
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