3.4 miles
Distance
1,155 ft
Climb
-1,152 ft
Descent
1 mile
High Point
3 ft
Altitude change
5,804 ft
Altitude min
5,804 ft
Altitude start
5,807 ft
Altitude end
-73.8%
Grade max
90.2%
Grade min
2 miles
Distance climb
2 miles
Distance down
440 ft
Distance flat

No description for Gregory Canyon Flagstaff Loop route has been added yet! Submit one here.

Detailed Description
Gregory Canyon Flagstaff Loop is a 3 mile less popular intermediate route located near Boulder Colorado. This hike primary route can be used both directions and has a hard overall physical rating. This route includes 4 trails. This route climbs 1,155 ft with a max elevation of 6,931 ft then descends -1,152 ft.
Route Supporters

Stats

  • Distance
    3 miles
  • Avg time
    58 min 33 sec
  • Altitude min
    5,804 ft
  • Altitude start
    5,804 ft
  • Altitude end
    5,807 ft
  • Climb
    1,155 ft
  • Descent
    -1,152 ft
  • Grade max
    -73.8%
  • Grade min
    90.2%
  • Distance climb
    2 miles
  • Distance down
    2 miles
  • Distance flat
    440 ft

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Trails in Route

Details

  • Riding area
    Boulder Open Space
  • Primary Activity
    Hike
  • Other Activities
    • Trail Running
    • Snowshoe
  • Difficulty rating
    Blue
  • Route Type
    Loop
  • eBike Allowed
    No
  • Direction
    Both Directions
  • Physical rating
    Hard
  • Ridelogs
    1

Directions

  1. Walk southwest on Gregory Canyon.
  2. Continue for 2 kilometers.
  3. Turn right onto Green Mtn Lodge Road.
  4. Continue for 100 meters.
  5. Bear right onto Flagstaff Road.
  6. Continue for less than 10 meters.
  7. Turn left onto Flagstaff Summit Road.
  8. Continue for 70 meters.
  9. Walk northwest on Range View.
  10. Continue for 900 meters.
  11. Walk northeast on Flagstaff Trail.
  12. Continue for 2 kilometers.
  13. Turn left onto Gregory Canyon.
  14. Continue for 300 meters.
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    Recent Trail Reports Along Route

    statustraildateconditiondescription
    Range View
    Jun 6, 2026 @ 8:19am (America/Denver)
    Jun 6, 2026
    Flagstaff Trail
    Jun 6, 2026 @ 8:19am (America/Denver)
    Jun 6, 2026
    Gregory Canyon
    Apr 29, 2026 @ 7:41am (America/Denver)
    Apr 29, 2026
    more reports »
    • By 1Hunter-RTF Pro & contributors
    • #36300 - 1,482 views

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