more stats
2.0 miles
Distance
40 ft
Climb
-48 ft
Descent
00:08:40
Avg time
-9 ft
Altitude change
5,355 ft
Altitude min
5,405 ft
Altitude max
5,365 ft
Altitude start
5,354 ft
Altitude end
-0.1%
Grade
-3.9%
Grade max
1.9%
Grade min
1 mile
Distance climb
2,969 ft
Distance down
1,316 ft
Distance flat
00:08:40
Avg time

CU South Main Loop Details

  • Activities
    • Mountain Bike
    • Gravel Bike
    • Adaptive Bike
    • Hike
    • Trail Running
  • Riding Area
    CU South Campus
    Boulder, Colorado
  • Difficulty Rating
    White Rate
  • Local Popularity
    15 in Mountain Biking [+]
    • 60 in Trail Running
    • 35 in Hiking
    • 5 in Adaptive Biking
    • 5 in Gravel Biking
  • Global Ranking
    #320963 in Mountain Biking [+]
    • #64248 in Trail Running
    • #156041 in Hiking
    • #1899 in Adaptive Biking
    • #15621 in Gravel Biking
  • State Ranking
    #5,535 in Mountain Biking · Colorado [+]
    • #1,931 in Trail Running
    • #4,878 in Hiking
    • #44 in Adaptive Biking
    • #420 in Gravel Biking
  • Trail Type
    Dirt/Gravel Road
  • Bike Type
    Gravel, Adaptive MTB
  • Direction
    Both Directions
  • Climb Difficulty
    Green
  • Physical Rating
    Easy
  • Trail Visibility
    Always easy to follow
  • Dogs Allowed
    Yes
  • Land Owner
    University of Colorado

Most flat and mostly smooth, this 2 mile loop circles the main part of CU South Campus and is suitable for jogging strollers, bike trailers, off leash dogs and trail users who don't mind gravel roads.

Tags

Traditionally Indigenous Territory

Recent Activity on Trail

Past Week
  • 0 rides
  •  
6 Months
  • 1 rides
  • 15 miles avg distance
All
  • 15 rides
  • Last: Sep 30, 2026
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CU South Main Loop Trail Reports

statusdatedescription
Apr 3, 2023 @ 6:45am
Apr 3, 2023
Dec 13, 2020 @ 10:23am
Dec 13, 2020
 Packed snow with occasional dogs.
Dec 1, 2019 @ 8:07am
Dec 1, 2019
 reporter Hard packed and post holey bumpy. 2.4 tires would be fine.
more »
Status:
on Apr 3, 2023
Dry
no votes yet
Your vote: 0

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      Directions to cu-south-main-loop trailhead (39.982030, -105.232680)
      View on Discover Map

      Photos

      4 more »
      mtb
      142 |
      Oct 22, 2019 @ 10:38am
      Oct 22, 2019
      mtb
      87 |
      Jul 24, 2019 @ 7:19am
      Jul 24, 2019
      mtb
      138 |
      Mar 13, 2019 @ 10:15am
      Mar 13, 2019
      mtb
      108 |
      Mar 13, 2019 @ 10:15am
      Mar 13, 2019

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      Technical Trail Features (TTF)

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      Nearby Trails

      CU South Campus

      • By WendyBMATF Pro BMA & contributors
      • #172640 - 4,451 views

      Frequently Asked Questions

      ▼ Where is CU South Main Loop located?
      CU South Main Loop is located in CU South Campus, Boulder, Colorado, United States. It is part of the CU South Campus trail network. The trailhead is located at coordinates 39.98203, -105.23268.
      ▼ How hard is CU South Main Loop?
      CU South Main Loop is rated as White difficulty. The physical rating is Easy. The average grade is 0.1%. The climb difficulty is rated Green.
      ▼ What is the elevation gain for CU South Main Loop?
      CU South Main Loop has 40 ft of elevation gain. The trail has 48 ft of elevation descent. The elevation ranges from 5,355 ft to 5,405 ft.
      ▼ Is CU South Main Loop a point to point trail?
      CU South Main Loop is not a point to point trail. The direction is Both Directions. The trail type is dirt/gravel road.
      ▼ How long is CU South Main Loop?
      CU South Main Loop is 2.0 miles long. The trail type is dirt/gravel road.
      ▼ Are dogs allowed on CU South Main Loop?
      Yes, dogs are allowed on CU South Main Loop. Please keep dogs on a leash where required and clean up after them.
      ▼ How do I access CU South Main Loop? Where is the closest parking trailhead?
      The closest parking and trailhead locations to CU South Main Loop are: View all parking locations in the area.
      ▼ How long does it take to ride CU South Main Loop?
      Based on recorded activities, it takes an average of 9 minutes to ride CU South Main Loop. The trail is 2.0 miles long. Actual times will vary based on fitness level, conditions, and pace. View recent activity logs for more details.
      ▼ How busy is CU South Main Loop?
      CU South Main Loop is a less popular trail with lighter traffic. There have been 264 recorded activities on this trail. The trail has received 293 check-ins. View recent activity on this trail.

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