Three Sisters Skyline

Sisters, United States • 19 Sep 2026

Event information

Three Sisters Skyline takes place on September 19, 2026 in Sisters, Oregon. The event starts at Village Green City Park and both races finish in the town of Sisters. Registration opens March 1, 2026.

  • 50K - trail race to the edge of the Three Sisters Wilderness
  • Half Marathon - point-to-point trail race, net downhill

Course details and policies

The 50K follows mostly single-track trails through Ponderosa pine stands, areas of regrowth after a 2012 forest fire, alpine meadows, and a mountain stream. The first 9.7 miles climb about 2,300 feet to the first aid station outside the Three Sisters Wilderness, then returns with a descent to the second aid station and on to the finish. The course lists approximately 3,700 feet of total climbing and 4,700 feet of descent. About 95% of the 50K is on single-track trails. There are three fully stocked aid stations on the 50K.

The half marathon is point to point with a net downhill of about 1,500 feet and about 500 feet of total gain. About 85% of the half marathon is on single-track trails with one aid station at mile 7.1.

The event policy states there are no transfers to other runners. Cancellations more than 30 days before the race may receive a 50% credit toward the same event next year; cancellations within 30 days receive no credit. If the organizer cancels and the event cannot be rescheduled, refunds or credits will not be issued. Registration fees support the Sisters Trail Alliance. Visit the organization's website for the most recent information.

Race information

50 km
50k
21 km
1/2 Marathon
Visit the organization's website for the most recent information.
Trail runs nearby

Giddy Up 5K/5Miler Ranch Run is held at Pole Creek Ranch just outside Sisters, Oregon. It offers a 5k run, 5k walk, a 5-mile option, and a FREE Buckaroo Run for kids ages 2–10. The course travels on packed gravel and dirt roads through the..

Suttle Lake Trailfest : October 25-26, 2025, Sisters, OR Suttle Lake Trailfest is a timed trail event held around Suttle Lake with three race formats. The event offers: 24-hour 12-hour 6-hour Free camping is available at South Shore Campg..

Run The Rock offers scenic loop trail races through Smith Rock State Park and Crooked River grasslands with 50K and half marathon options that highlight rock faces and Cascade views. Expect big climbs and single track thrills.

UTMB Index

Incline Vista : Redmond, OR Incline Vista is a trail race held on Saturday, Apr 4, 2026, at Cline Butte near Eagle Crest Blvd in Redmond, OR. The course offers wide views, including the Cascade Range to the west and Smith Rock and the Ochoc..

The Peterson Ridge Rumble is a fun, low-key trail running event held near Sisters, Oregon, utilizing the scenic Peterson Ridge and Metolius-Windigo multi-use trails. The race offers three distances: 40 miles, a trail marathon (27.8 miles),..

Sisters Country in Sisters, Oregon on May 3, 2026 offers 50K and half marathon on scenic single track. Enjoy rewarding climbs, stocked aid, finisher medal and post race beer while supporting Ridgeview HS cross country.