Southeast of Eugene near Roseburg in the Umpqua National Forest, the Mt. Thielsen Trail #1456 is a 5 mile climb over 3,700 feet through mountain hemlock-true fir for breath-taking views of Mt. Thielsen.
The trailhead is on SR138 south of Roseburg.
To reach the Mt Thielson Sno-Park from the intersection of I-5 and SR 138 in Roseburg, go east on SR 138 for about 79 miles to the Mt. Thielsen Sno-Park. It is 2.7 miles past the Diamond Lake Resort Access Road. Park on the left.
no-park is located 1.5 miles north of the junction of Highway 230 on Highway 138 - about 2.7 miles south of the Diamond Lake Resort access road. There is a restroom and parking for about 30 vehicles. A Sno-park permit is required.
The Mt. Thielsen Trail is the popular summer trail #1456 that leads hikers to the top of Mt. Thielsen (9152). You ll be skiing uphill on slopes averaging about 10% grade. Elevation at the parking lot is 5300 . The trail intersects the Spruce Ridge Trail at 1.5 miles and 6100 elevation. Continuing on the Mt. Thielsen Trail is recommended for experienced backcountry skiers - there are steeper grades and the trail in not marked with the familiar blue diamonds. This trail intersects the Pacific Crest Scenic Trail 2.2 miles further up at about the 7300 elevation. The open slopes above tree line make for some fine skiing but be prepared for avalanches - check with locals on snow pack stability.
Overall, Mt. Thielsen Trail is the 5th most popular cross country ski area of all 24 Nordic ski destinations in Oregon.