AMBLEWAY Wildest hikes

Boulder Reservoir–Humpty Hump Viewpoint, 4 sights

3.4 mi · ▲ 56 ft · 1 hr 10 min

Boulder Reservoir–Humpty Hump Viewpoint, 4 sights is a 3.4-mile out-and-back near Gunbarrel, CO. The route passes Boulder Reservoir before reaching Humpty Hump Viewpoint at the turnaround, 1.6 miles in. It is mostly level, with 56 ft of elevation gain, and mostly gravel. It scores 0/100 on the Ambleway Wildness scale: paved and peopled.

Elevation

0 mi5,128 – 5,220 ft3.8 mi

Getting there

Trailhead: Unnamed 40.07648, -105.19278
Nearest town Gunbarrel, CO
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Directions

AMBLEWAYwww.ambleway.com

Boulder Reservoir–Humpty Hump Viewpoint, 4 sights

3.4 mi · ▲ 56 ft · 1 hr 10 min

Elevation 5,130–5,221 ft

Out & Back

Trailhead: 40.07648, -105.19278

Weather Sep 5: Overcast, high 93°F / low 63° · precip 5% · wind 4 mph · sunrise 6:33 AM · sunset 7:28 PM

Transit-accessible: Lookout Rd & Idylwild Trail stop 403 m from the trailhead · Parking lot at the trailhead

  1. Start at the trailhead, heading SW.
  2. 200 ftTurn right onto Longmont-to-Boulder (LOBO) Regional Trail, heading W.
  3. 0.2 miTurn right onto IBM Connector Trail, heading N.
  4. 0.8 miTurn left, heading NW.
  5. 0.1 miPass Boulder Reservoir.
  6. 450 ftTurn left, heading NW.
  7. 50 ftBear left onto Boulder Reservoir Dam (North), heading W.
  8. 0.4 miPass Humpty Hump Viewpoint.
  9. 450 ftTurn left onto Humpty Hump, heading S.
  10. 250 ftTurn left, heading S.
  11. 150 ftReach Boulder Reservoir, then turn around and head back the way you came.
  12. 400 ftTurn right, heading S.
  13. 50 ftContinue straight onto Boulder Reservoir Dam (North), heading SW.
  14. 0.5 miBear right, heading NE.
  15. 50 ftTurn right, heading NE.
  16. 0.2 miTurn right onto IBM Connector Trail, heading SE.
  17. 0.8 miTurn left onto Longmont-to-Boulder (LOBO) Regional Trail, heading SE.
  18. 0.2 miTurn left, heading SE.
  19. 50 ftArrive back at the trailhead.

Each distance is the walk from the previous step. Tap a step for a map of its junction.

Trail map, photos and weather for this hike: www.ambleway.com/hikes/boulder-reservoir-humpty-hump-viewpoint-out-back-4-sights

Trail surface

89% gravel7% dirt4% paved

Weather

OvercastTemperature 93°F63°
Precip5%Wind4 mphUV7Humidity31%
Hourly temperature
95°60°
Sunrise 6:33 AM12 AM3 AM9 AM12 PM3 PMSunset 7:28 PM
Sun 90°64° 21%
Mon 89°67° 25%
Tue 90°60° 26%
Wed 91°60° 26%
Thu 87°64° 25%
Fri 93°60° 18%

Good to know

  • Transit-accessible: Lookout Rd & Idylwild Trail stop 403 m from the trailhead
  • Parking lot at the trailhead

More from this trailhead

Hikes near Gunbarrel, Colorado