from usfs.gov:
The Lake Como National Recreation Trail #502 is 3.0 miles long. It begins at Road 1111 and ends at Trail #580.
This is an easy trail on the north side of Lake Como and is open to hiking and biking. The trail is paved for the first 1/4 mile. This hike offers spectacular views of Como Peaks, osprey, and wildflowers. Just beyond the junction of Trail #580 you will be rewarded by a beautiful waterfall. No horses are allowed on Trail #502. The Selway Bitterroot Wilderness boundary is located approximately 1/2 mile beyond the Lake.
Trail #502 joins with Trail #580 at the west end of Lake Como. Trail #580 is open for horseback travel. This trail provides a 7.1 mile loop around the lake. Trail #580 continues west beyond the lake accessing Elk Lake, 9 miles from the Wilderness boundary then on to Bell Lake on the Idaho side of the Divide.
Parking for mountain bikers is located below the spillway. Parking for hikers is located at Lake Como trailhead. Camping for RV's is located at Lake Como Campground, while the upper campground offers tent and smaller trailer campsites.
The trail is open for the following uses: Hiking and Mountain Biking.