more stats
5.2 miles
Distance
425 ft
Climb
-3,517 ft
Descent
01:34:24
Avg time
-3,092 ft
Altitude change
9,550 ft
Altitude min
13,054 ft
Altitude max
12,642 ft
Altitude start
9,551 ft
Altitude end
-11.2%
Grade
-74%
Grade max
78.5%
Grade min
3,301 ft
Distance climb
4 miles
Distance down
774 ft
Distance flat
01:34:24
Avg time

Boulder Gulch Details

  • Activities
    • Hike
    • Mountain Bike
    • Trail Running
  • Riding Area
    Silverton
    , Colorado
  • Difficulty Rating
  • Local Popularity
    60 in Mountain Biking [+]
    • 5 in Trail Running
    • 5 in Hiking
  • Global Ranking
    #91377 in Mountain Biking [+]
    • #158348 in Trail Running
    • #157813 in Hiking
  • State Ranking
    #1,779 in Mountain Biking · Colorado [+]
    • #4,897 in Trail Running
    • #5,003 in Hiking
  • Hiking SAC Scale
    T1 Hiking
  • Trail Type
    Primitive
  • Bike Type
    AM
  • Direction
    Downhill Primary
    Popular Direction Shown
  • Climb Difficulty
    Double Black Diamond
  • Physical Rating
    Extreme
  • Trail Visibility
    Sometimes hard to follow
  • Season
    July - Sept
  • Alpine Trail
    Yes
  • Dogs Allowed
    Yes
  • eBike Allowed
  • TTFs on Trail
    Rock Garden

This is more than a ride. It’s an alpine adventure that you won’t forget. After a 2,000’ hike-a-bike, you’ll crest the ridge and be treated to spectacular views. Boulder Gulch trail is very steep and descends 3,700’ in less than four miles and has a variety of riding (alpine tundra, exposed side hilling, rocky technical fun, and many very steep, loose sections). This is a hardcore alpine experience and you must be fully prepared (be prepared for remoteness, wind, cool temps, and lightning likely during thunderstorms). There is very limited cell service on this route.

From Silverton, take county road 110 past the Silverton ski area. The road will eventually curve right, past the Water Treatment Plant. From here, take County Road 52 to the end (Velocity Basin). Park here and get ready to hike your bike.

From the parking area, there is a trail that heads east. Bikes are not allowed to be ridden anywhere on the climb and must be carried. With your bike on your back, follow this trail. Your objective is the ridgeline above. After ascending 2,000 ft, you’ll reach the ridge where you’ll find a faint trail. Follow this trail along the ridge until you eventually reach the high point at 13,000’. Stop and enjoy the views (you’ll look down into Eureka Gulch to your left, Velocity Basin to your right, and Boulder Gulch straight ahead).

From the high point, get ready for a spicy descent (the trail descends 3,700’ in approx. 3.5 miles). The trail is very faint at the top but becomes more pronounced as you go further down. If you lose the trail at the top, stop and look for cairns.

The initial trail is faint as it descends through the alpine tundra. There are some sections where the trail skirts along the side of steep hillsides. About midway down, the trail jogs left and over a small creek crossing. Continue following the trail as it passes through the trees. There are several sharp switchbacks sprinkled throughout, and some super steep sections of loose rock. Eventually the trail ends at Boulder Gulch stream where you’ll see a concrete intake pond. This is Silverton’s water source so please stay out of the water. From here, follow the doubletrack road which eventually leads to Silverton. Stay on the doublectrack road and do not shortcut through private property to reach CR2

Access Info Restricted Access

The primary route to get to this trail begins at Velocity Basin. Bikes are not allowed to be ridden on the climb (BLM land from the lake to the summit); however, you are allowed to hike this section with your bike on your back. The roughly 2,000 ft. climb is steep and most people wouldn’t be able to ride it anyway.

Be prepared for weather because this area attracts a lot of lightning. The high point is 13,000 ft and weather conditions can change in minutes. The trail is steep the whole way down so be sure your brakes are in good working order

At the end of the ride (bottom of the trail), be sure to stay on the doubletrack road until you reach the gate at the water tank. Stay on the doublectrack road and do not shortcut through private property to reach CR2!

Disclaimer

This is a hardcore high alpine adventure ride. Not to be taken lightly because of the remoteness, elevation, and exposure to lightning. If it looks like dark clouds are moving in, get down as lightning strikes are very common up here.

Trail Supporters
  • BLM
    BLM
    Land Manager
Local Trail Association
Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 3 rides
  • 10 miles avg distance
All
  • 11 rides
  • Last: Sep 10, 2026
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Boulder Gulch Trail Reports

statusdatedescription
Sep 7, 2026 @ 1:24pm (America/Denver)
Sep 7, 2026
Majority is in perfect shape. As mentioned near the end has a rock slide (~30 feet) that you have to hike through.
Jul 31, 2026 @ 7:47am (America/Denver)
Jul 31, 2026
Parts of the lower trail have been washed out from flooding and will need to be repaired. Is passable, but not rideable.
Jul 17, 2025 @ 7:45am
Jul 17, 2025
Oct 19, 2024 @ 9:07am
Oct 19, 2024
Snow covered for season.
Oct 19, 2024 @ 9:06am
Oct 19, 2024
Snow covered for season.
more »
Status:
on Sep 7, 2026
Ideal
Avg: 4.17 (5 votes)
Your vote: 0

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      Directions to boulder-gulch trailhead (37.872600, -107.633320)

      Photos

      19 more »
      mtb
      345 |
      Jun 8, 2021 @ 10:11am
      Jun 8, 2021
      mtb
      342 |
      Jun 8, 2021 @ 10:11am
      Jun 8, 2021
      mtb
      368 |
      Jun 8, 2021 @ 9:10am
      Jun 8, 2021
      mtb
      366 |
      Jun 8, 2021 @ 9:09am
      Jun 8, 2021

      Videos

      1 more »
      Chunky delight!
      mtb
      0:36 | | Jun 8, 2021 , Silverton
      4.4 ★★★★★
      5 Ratings
      5 ★ 80%
      4 ★
      3 ★
      2 ★ 20%
      1 ★

      4 Reviews & Comments

      illili
      Road up at time of writing is accessible without 4WD, but you run a decent risk of scraping with a non-SUV.

      The hike a bike (on your back) up velocity basin is savage, but worth it. Yes, you do need to *carry* your bike all the way. The views you are rewarded with are rare to find anywhere in the world.

      Come prepared, the elevation is killer and it can be windy/cold up top. Also be sure to bring extra supplies for repairs, food, first aid, etc.. The trail down is challenging and it’s a long walk down to get help.
      TheDeadSailor TheDeadSailor
      Heavy brake burner trail. An okay descent. Go up velocity basin, don’t access from Eureka Gulch as that trail has completely disappeared.
      dernat dernat
      It was explained to us that access from Velocity Basin is a bit complicated and ultimately requires mountain bikers to physically carry their bikes virtually straight up from the parking lot. There is a trail that skirts lookers left, but that apparently isn’t being used anymore and crosses onto private property. Furthermore, BLM restrictions in Velocity Basin prohibit vehicles of any sort off the road. Therefore, you must carry your bike - NOT push. We were told that the BLM could shut this trail down if users do not adhere to these guidelines. You will not find this information posted, thus the reason for this comment.

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      • By boldskoolTF Pro & contributors
      • #136353 - 7,632 views

      Frequently Asked Questions

      ▼ Where is Boulder Gulch located?
      Boulder Gulch is located in Silverton, Colorado, United States. It is part of the Silverton trail network. The trailhead is located at coordinates 37.8726, -107.63332.
      ▼ How hard is Boulder Gulch?
      Boulder Gulch is rated as Double Black Diamond difficulty. The physical rating is Extreme. The average grade is 11.2%. The climb difficulty is rated Double Black Diamond.
      ▼ What is the elevation gain for Boulder Gulch?
      Boulder Gulch has 425 ft of elevation gain. The trail has 3,517 ft of elevation descent. The elevation ranges from 9,550 ft to 13,054 ft.
      ▼ Is Boulder Gulch a point to point trail?
      Boulder Gulch is not a point to point trail. The direction is Downhill Primary. The trail type is primitive.
      ▼ How long is Boulder Gulch?
      Boulder Gulch is 5.2 miles long. The trail type is primitive.
      ▼ Are dogs allowed on Boulder Gulch?
      Yes, dogs are allowed on Boulder Gulch. Please keep dogs on a leash where required and clean up after them.
      ▼ When is the best time of year to ride Boulder Gulch?
      Boulder Gulch is best visited during: July - Sept.
      ▼ How do I access Boulder Gulch? Where is the closest parking trailhead?
      The closest parking and trailhead locations to Boulder Gulch are: View all parking locations in the area.
      ▼ How long does it take to ride Boulder Gulch?
      Based on recorded activities, it takes an average of 1 hour 34 minutes to ride Boulder Gulch. The trail is 5.2 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is Boulder Gulch?
      Boulder Gulch is a moderately popular trail. There have been 195 recorded activities on this trail. The trail has received 148 check-ins. View recent activity on this trail.

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