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Hike through the big, open country of the Salmon River Mountains.


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15.6

Miles

25.1

KM

Point to Point

7,868' 2,398 m

High

5,563' 1,696 m

Low

2,745' 837 m

Up

4,381' 1,335 m

Down

9%

Avg Grade (5°)

34%

Max Grade (19°)

Dogs Leashed

Features Fall Colors · Lake · River/Creek · Swimming · Views · Wildflowers · Wildlife

Overview

The Crestline Trail takes you into some beautiful backcountry area of the Payette National Forest. You'll pass a couple of high mountain lakes and marshes along the way. Most of this area was impacted by the 1994 Blackwell wildfire, so there's not much shade.

Need to Know

There is very little shade on this hike. Bring a hat, wear sunscreen, and hike it before it gets too hot. You are going to get your feet wet at Box Creek or lay in the creek to cool off. Crestline is open to motorcycles and the Falls Saddle Trail (#108) at the south end is popular with ATV/UTV's because it is so close to McCall. No bathrooms at the trailheads.

Description

The trail can be taken either direction, but north to south generally trends downhill except for the big climb starting at about mile 6. To start from the north, park at the Pearl Lake trailhead off of Warren Wagon Road. After you turn off WW road, forest road #432 is a rough road with large stones as the road base - drive slow.

Because this area burned in '94, the dead trees are really starting to come down now. In 2016, the trail was cleared by the Idaho State Trail Rangers, but a heavy winter snowfall and some wind will bring down more trees. Be prepared to climb over, step over, or crawl under some dead lodgepole pines. Because this trail is open to motorcycles, it tends to get cleared out by the motorcycle riders as the summer goes along.

There are a couple of short spur trails that will take you to Pearl Lake, Brush Lake, and Box Lake. Those may not be cut out by motorcycle riders.

Other than the downed trees, the Crestline Trail is pretty manageable. Except for the climb that starts after Box Creek. It's about a 1,000 feet in almost 2 miles. There are great views from the top (7,890').

After the big climb, the trail begins to descend nicely to Blackwell Lake. The Crestline Trail (#109) ends about 1.6 miles after Blackwell Lake. Pick up the Falls Saddle Trail (#108) and go right to the southern trailhead.

Contacts

Shared By:

Keith Lannom with improvements by Al Kingston

Trail Ratings

  3.8 from 4 votes

#5020

Overall
  3.8 from 4 votes
5 Star
25%
4 Star
25%
3 Star
50%
2 Star
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1 Star
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Recommended Route Rankings

#74

in Idaho

#5,020

Overall
4 Views Last Month
4,708 Since Feb 1, 2017
Intermediate/Difficult Intermediate/Difficult

0%
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33%
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Photos

Looking NE from near the summit.
Sep 8, 2025 near McCall, ID
Blackwell Lake - low water level.
Sep 8, 2025 near McCall, ID
Meadow north of Crestline Lake.
Sep 8, 2025 near McCall, ID
Crestline looking toward Payette Lake/McCall.
Sep 8, 2025 near McCall, ID
The climb after Box Creek is about 1,000 feet.
Feb 1, 2017 near McCall, ID
Blackwell Lake.
Jul 22, 2022 near McCall, ID

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Weather


Current Trail Conditions

All Clear 87 days ago
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Check-Ins

Sep 6, 2025
Carl
Backpacked from Box Lake/Creek to Blackwell Lake and Falls Saddle junction. Very loose/dusty/rocky from motorcycle use. 5mi
Jun 29, 2019
Larry Myles
Jul 21, 2018
Mary Evers
Jun 28, 2018
Stephen Kramer
5.5 miles out and back. North section from parking lot cleared of deadfall to Pearl Lake trail only. 11mi — 2h 00m
Jul 30, 2017
Sherry Swearngin
Just starting!
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