Cottonwood Trail

Cottonwood Trail -The Cottonwood area has multiple options for moderate to advanced mountain biking.

From Cottonwood Trailhead on Forest Service (FS) road 377, an approximately 16 mile loop can be enjoyed taking the 189 trail that runs along Cottonwood Creek southeast for about 7 miles to its intersection with FS road 203 near Thorn Creek Butte. 

This is the highest section of the loop at about 7,500 feet.

The path then descends FS road 203 to the southeast until it reaches FS road 377 again and heads south on the single-lane dirt road back to the trailhead. 

(The trail may be brushy according to a visitor comment in May of 2016).

At a Glance

Operational Hours: May 15 - October 1  (or until closed by snow) 
Information Center: Read Steve Stuebner's article about Cottonwood Trail for more information -

General Information

General Notes:

Cottonwood Trailhead -  is a signed site with visitor information and registration box. 

(Latitude  43.65974 / Longitude -115.83565).

All trailheads have space for parking.


From Boise, Idaho, travel north along State Highway 21 and turn right at the Forest Service (FS) road 268 junction that goes to Arrowrock Reservoir. 

Travel along FS road 268 east past the Arrowrock Dam approximately 16 miles to the Cottonwood Campground.

Turn left on the switchback that intersects with FS road 377.

The Cottonwood Trailhead is north of the campground follows Cottonwood Creek north to Bald Mountain Lookout.

Recreation Map

Map showing recreational areas. Map Information


Mountain Biking

Enjoy miles of mountain biking along the Cottonwood Trail System.


Day Hiking

Horse Riding

OHV Camping

Recreation Areas

Recreation Activities


  Latitude : 

  Longitude :