Trail Run Project Logo

Proctor Mountain Loop



4.4 mile 7.0 kilometer point to point
66% Runnable


Ascent: 1,610' 491 m
Descent: -1,610' -491 m
High: 7,620' 2,323 m
Low: 6,052' 1,845 m


Avg Grade: 14% (8°)
Max Grade: 40% (22°)


Driving directions Take a virtual tour
Zoom in to see details
Map Key

Trail shared by Megan W

An enjoyable loop with historical ski area relics and views of Ketchum.

Megan W

Features Views · Wildflowers · Wildlife


Easy access from the neighborhoods of Sun Valley make this route convenient for a nice workout.

Runner Notes

This trail has a mostly fine gravel and dirt surface, that makes for smooth, easy running.


Head up either of the two paths directly from the parking area. Soon they both converge at the intersection of a doubletrack road with a rock outcrop on the left. The Proctor Loop Trail can be done in either direction, but the recommended direction starts with the left fork indicated by the signpost.

The trail starts out wide and flat but quickly becomes singletrack with a fine gravel and dirt surface, that makes for very smooth, easy travel. Progressing up through the valley with a prominent tree-less hill on the left, the trail passes alternately through stunted aspen groves and grassy areas with wildflowers. Upon reaching a series of somewhat steeper switchbacks, the denser evergreens offer shade and provide the trail with a soft carpet of needles.

The second switchback deposits you at a trail junction with the Aspen Loop. Continue on the Proctor Mountain trail to the right and traverse back and forth up the headwall at the top of the valley. The remainder of the trail is without shade. Reaching grassy saddle affords a view over the backside of the range and Sun Valley ski area (Bald Mountain) ahead. The highpoint of the trail skirts the flank of its namesake, Proctor Mountain (7798 ft) sweeping through scrubby sage and becoming very slightly rockier.

Keep a sharp eye out for an abrupt right turn off the main sweep of the trail - this unsigned turn heads west towards a bald saddle and knoll (taking the southern fork leads to switchbacks down a valley on eventually less worn trail). From this knoll, views of Ketchum and its golf course emerge and the trail plunges steeply down the ridge.

The descent eases approaching Ruud Mountain (6705 ft) with its single-seat chairlift, built in 1938. The Ruud chairlift, which operated until the early 1960s, was the third chairlift installed in this area. The first operating chairlift in the world was built in 1936 on Proctor Mountain, and its remnants can still be found in the grass. Continue down the ridge past occasional small aspen groves to the trail junction and trailhead. Note: bikes are not allowed on this trail.

Run this trail?

We need help with the following missing trail information:

Need to Know, Dogs Allowed, Flora & Fauna, History & Background

Rate This Run

Rate Quality

   Clear Rating

Rate Difficulty

Share This Run

Check In



Trail Ratings

  4.2 from 6 votes


  4.2 from 6 votes
5 Star
4 Star
3 Star
2 Star
1 Star
Run Rankings


in Idaho


49 Views Last Month
15,438 Since Nov 17, 2014



One of a handful of offering piles
Nov 17, 2014 near Sun Valley, ID
Wildflowers on the ridgeline
Nov 17, 2014 near Sun Valley, ID
Doubletrack at the beginning of Proctor Loop Trail
Nov 17, 2014 near Sun Valley, ID
Wooded section of the Proctor Mountain Loop
Nov 17, 2014 near Sun Valley, ID
Wildflowers and view down-valley
Nov 17, 2014 near Sun Valley, ID
Old Ruud Mountain chairlift
Nov 17, 2014 near Sun Valley, ID


Trail Run Project is part of the REI Co-op family,
where a life outdoors is a life well lived.

Shop REI Running