Prepare for an unforgettable trail experience at the Three Sisters Skyline on September 19, 2026, in the charming mountain town of Sisters, Oregon. Offering both a challenging 50K ultra and a fast 13.1M half marathon, this race is renowned for its stunning vistas of the Three Sisters and other majestic Cascade peaks. Typical race day conditions in mid-September feature pleasant highs around 77°F and cool lows near 39°F, with minimal chance of precipitation, creating ideal running weather.

The 50K course, primarily 95% single-track, guides runners through a diverse and breathtaking landscape. Beginning with a steady 2,300-foot climb over the first 9.7 miles, you'll reach the edge of the Three Sisters Wilderness, surrounded by Ponderosa Pines, areas of forest regrowth from a 2012 fire, picturesque alpine meadows, and mountain streams. With approximately 3,700 feet of ascent and 4,700 feet of descent, the course profile makes for a uniquely fast ultra, with the final 12 miles being quite flat. Runners can expect three fully stocked aid stations along the route, with cut-offs at mile 19.1 and 25.5.

For those seeking a swift yet scenic challenge, the half marathon is a point-to-point, net-downhill course with 1,500 feet of descent and only 500 feet of gain, making it a "fast trail half" run on 85% single-track. This distance is also famously dog-friendly, allowing you to share the magnificent views of ponderosa forests and open meadows with your furry companion. Both races culminate with a festive finish line celebration at Village Green Park in the heart of Sisters, where a complimentary post-race meal and refreshing drinks await. Praised by runners for its beautiful setting, well-marked trails, and incredible volunteers, the Three Sisters Skyline, a UTMB Index race, promises an exceptional and visually spectacular adventure.