Arthurs Rock–Arthur's Rock, 9 sights is a 10-mile out-and-back in Horsetooth Mountain Open Space near Horsetooth Heights, CO. The route passes Horsetooth Reservoir and Arthur's Rock before reaching Arthurs Rock at the turnaround, 5 miles in. It climbs 2,419 ft, with sections as steep as 22% grade, and is mostly dirt. It scores 51/100 on the Ambleway Wildness scale: backcountry feel.
Elevation
0 mi5,460 – 6,756 ft · steepest grade: 22%10.5 mi
Getting there
Trailhead: Unnamed 40.53216, -105.16275
Nearest town Horsetooth Heights, CO
Directions
AMBLEWAYwww.ambleway.com
Arthurs Rock–Arthur's Rock, 9 sights
10 mi · ▲ 2,419 ft · 4 hr 33 min
Elevation 5,460–6,756 ft
Out & Back · Horsetooth Mountain Open Space
Trailhead: 40.53216, -105.16275
Weather Sep 4: Partly cloudy, high 91°F / low 62° · precip 4% · wind 5 mph · sunrise 6:32 AM · sunset 7:30 PM
Toilets at the trailhead · Drinking water at the trailhead · Parking lot at the trailhead
- Start at the trailhead, heading NW.
- 50 ftPass Horsetooth Reservoir.
- 50 ftTurn right onto Swan Johnson Trail, heading N.
- 200 ftContinue straight onto Nomad Trail, heading N.
- 50 ftContinue straight onto Swan Johnson Trail, heading N.
- 0.3 miTurn left onto Towers Trail, heading W.
- 500 ftBear left onto Nomad Trail, heading SW.
- 50 ftBear right onto Towers Trail, heading W.
- 0.5 miBear right onto Stout Trail, heading SW.
- 50 ftContinue straight onto Towers Trail, heading SW.
- 0.4 miBear right onto Loggers Trail, heading N.
- 0.2 miBear right onto Herrington Trail, heading N.
- 50 ftContinue straight onto Loggers Trail, heading W.
- 1 miTurn left onto Mill Creek Trail, heading NW.
- 1 miTurn left onto Howard Trail, heading NE.
- 0.3 miTurn right, heading NE.
- 0.1 miContinue straight onto Arthur's Rock Trail, heading S.
- 1 miPass Arthur's Rock.
- 50 ftReach Arthurs Rock, then turn around and head back the way you came.
- 1.1 miTurn left onto Howard Trail, heading E.
- 0.3 miTurn right onto Mill Creek Trail, heading SE.
- 1 miTurn right onto Loggers Trail, heading S.
- 1 miContinue straight onto Herrington Trail, heading SW.
- 50 ftBear left onto Loggers Trail, heading SW.
- 0.2 miBear left onto Towers Trail, heading S.
- 0.4 miContinue straight onto Stout Trail, heading S.
- 50 ftBear left onto Towers Trail, heading S.
- 0.5 miBear left onto Nomad Trail, heading E.
- 50 ftBear right onto Towers Trail, heading E.
- 500 ftTurn right onto Swan Johnson Trail, heading E.
- 0.3 miContinue straight onto Nomad Trail, heading E.
- 50 ftContinue straight onto Swan Johnson Trail, heading E.
- 200 ftTurn left, heading S.
- 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 surface
92% dirt8% gravel
Weather
Partly cloudyTemperature 91°F62°
Precip4%Wind5 mphUV7Humidity22%
Hourly temperature
95°60°
Sunrise 6:32 AM12 AM3 AM9 AM12 PM3 PMSunset 7:30 PM
Sat
92°67°
Sun
89°62°
24%
Mon
92°69°
24%
Tue
87°62°
16%
Wed
88°60°
26%
Thu
95°62°
27%
Good to know
- Toilets at the trailhead
- Drinking water at the trailhead
- Parking lot at the trailhead
More from this trailhead
- Horsetooth Mountain–Horsetooth Reservoir, 6 sights 7.6 mi · ▲ 2,022 ft
- Fire Line Viewpoint–Horsetooth Reservoir, 6 sights 9.1 mi · ▲ 2,002 ft
- Lodgepole Drive Viewpoint–Horsetooth Reservoir, 7 sights 10.5 mi · ▲ 468 ft
Get outside more
A wild hike near Horsetooth Heights, emailed to you once a week.
Hikes near Horsetooth Heights, Colorado