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1,480 ft
Distance
378 ft
Climb
00:12:04
Avg time
378 ft
Altitude change
9,442 ft
Altitude min
9,820 ft
Altitude max
9,442 ft
Altitude start
9,820 ft
Altitude end
25.5%
Grade
4.9%
Grade max
82.5%
Grade min
1,480 ft
Distance climb
00:12:04
Avg time
Natural Selection Details
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Activities
- Mountain Bike
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Riding AreaPajarito Bike Park
Los Alamos, New Mexico -
Difficulty Rating
-
Local Popularity55 in Mountain Biking
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Global Ranking#107920 in Mountain Biking
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Trail TypeSingletrack
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Bike TypeDH
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DirectionDownhill Primary
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Dogs AllowedYes
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TTFs on TrailBridge, Drop, Jump, Gap Jump, Ladder Bridge, Rock Face
If you're not feeling on, take another trail.
Natural Selection is not only one of the steepest trails on the mountain, but hosts several of the most gnarly natural features. Several very steep rock rollers, (and make sure you roll them, not try to hit them as a jump) mixed in with drops and tons of loose rock.
Down lower the trail gets less steep and has several really fun fast berms and jumps.
There are several really cool wooden features down low.
You'll hit a small gap jump, then into a step up to a wooden bridge.
Step down off that and turn right into a large gap jump. Don't short it...
Bike Park
Local Trail Association
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Please consider joining or donating to the local trail association to supportDonate to earn trail karma!
trail development & maintenance.
Traditionally Indigenous Territory
Recent Activity on Trail
Past Week
- 0 rides
6 Months
- 0 rides
All
- 30 rides
- Last: Sep 21, 2025
| c1 | c2 | c3 | c4 |
|---|---|---|---|
January | February | March | April |
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Natural Selection Trail Reports
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Trail Conditions
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- Snow Cover Partial
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- Prevalent Mud
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The colour categories are based on what percentage of riders are riding a trail in its intended direction.
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Directions to natural-selection trailhead
(35.897610, -106.399520)
Photos
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Videos
1 more »
0:48 |
331 |
Jul 25, 2016 , Los Alamos
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Frequently Asked Questions About Natural Selection
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Where is Natural Selection located?
Natural Selection is located in Pajarito Bike Park, Los Alamos, New Mexico, United States. It is part of the Pajarito Bike Park trail network. The trailhead is located at coordinates 35.89761, -106.39952.
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How hard is Natural Selection?
Natural Selection is rated as Double Black Diamond difficulty. The average grade is 25.5%.
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What is the elevation gain for Natural Selection?
Natural Selection has 378 ft of elevation gain. The elevation ranges from 9,442 ft to 9,820 ft.
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Is Natural Selection a point to point trail?
Natural Selection is not a point to point trail. The direction is Downhill Primary. The trail type is singletrack.
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