2.9 miles
1,973 ft
-24 ft
1.8 miles
High Point


  • Difficulty rating
  • Trail type
  • Trail Usage
    Biking Primary
  • Direction
    Both Directions
  • Climb Difficulty
    Black Diamond
  • Physical rating
  • Global Ranking

I can't imagine biking up this section.
It's loose, rocky and pretty steep for 4 miles.
Unless you're pro, there would be several sections that were hike-a-bike.

Do yourself a favor and ride down this trail.
From FR 437, head down some tight switchbacks on to rockier and rockier trail.
Unless you know the trail, don't get going too fast. There's several sections of gnarly rocks covered in loose pebbles.
Also some sections drop off to the side, not some place you want to eat it.

That being said...go really fast.
It's a super fun and wild downhill segment switching between nice packed dirt trails and technical rock sections.
Watch for hikers as you get lower.

You'll hit a T-junction after almost a mile and a half of descent. Head striaght/right to gain a really nice overlook of the valley. Head back and take the left to keep going downhill.

This first corner 200 feet up is pretty gnarly, I was told to take the inside track and it was pretty tough, so I wouldn't want to try the outside line.

The trail gets a little less steep through here, but still keeps you on your toes.
As you ride across the side of the hill, the trail can drop off to the right.
Keep an eye out for high lines on the left. They tend to be way easier.
Several nasty rocks will catch you by surprise, so be ready.

Almost a mile after the overlook, the trail is getting close to the road again.
This is where it meets with the trail listed as Water Tank.

If you're headed down that, there are several different lines here you can take.
We took a right at the trail intersection, rather then head straight on Water Tank.
This section has some really nice big water bars you can launch off.
The trail can be covered in rocks, so don't forget to scope your line.

Down lower you can take another right and hop some some nice packed trail just before you hit the road.

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More Stats for South Boundary - Section 1 mountain bike trail
  • Altitude change
    1,949 ft
  • Altitude min
    1.4 miles
  • Altitude start
    1.4 miles
  • Altitude end
    1.8 miles
  • Grade
  • Grade max
  • Grade min
  • Distance climb
    2.9 miles
  • Distance down
    506 ft
  • view trail stats
on Apr 29, 2016
Snow Covered
Avg: 4.5 (2 votes)

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South Boundary -... Trail Reports

Apr 29, 2016 @ 8:36am
Apr 29, 2016
from el nogal trailhead SBT is snow covered at 4.3 miles up, just above the intersection for Ojitos. Just below that intersection there are...
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60 |
Apr 29, 2016 @ 8:44am
Apr 29, 2016
South Boundary - Section 1
67 |
Apr 29, 2016 @ 8:43am
Apr 29, 2016
South Boundary - Section 1
68 |
Apr 29, 2016 @ 8:43am
Apr 29, 2016
South Boundary - Section 1
72 |
Apr 29, 2016 @ 8:43am
Apr 29, 2016
South Boundary - Section 1

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Macky Franklin | South Boundary Trail
1:52 | 8720 | Nov 6, 2015 South Boundary - Section 1
South Boundary Trail
1:07 | 208 | Dec 31, 2012 South Boundary - Section 1

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