The Three Sisters Skyline is an annual trail running event held in the charming mountain town of Sisters, Oregon. The race offers two stunning distances for runners to choose from: a 50K ultramarathon and a half marathon. Both courses take participants through scenic landscapes, including alpine meadows and Ponderosa pine forests, while providing incredible views of the Three Sisters and other Cascade peaks. The event is a celebration of the region's natural beauty and also serves as a fundraiser for the Sisters Trail Alliance, a non-profit dedicated to building and maintaining local trails.
Race Date:
20 September, 2025
The Three Sisters Skyline 50K is an ultramarathon that takes runners on a fast, scenic course to the edge of the Three Sisters Wilderness, featuring approximately 3,700 feet of climbing. The race is known for its stunning views of the Cascade peaks and a course that is over 95% single-track trail.
Weather based on historical averages.
The Three Sisters Skyline 50K is an ultramarathon that takes runners on a fast, scenic course to the edge of the Three Sisters Wilderness, featuring approximately 3,700 feet of climbing. The race is known for its stunning views of the Cascade peaks and a course that is over 95% single-track trail.
The Three Sisters Skyline 50K is 50km long.
The Three Sisters Skyline 50K takes place in Sisters, Oregon, USA.
The Three Sisters Skyline 50K elevation gain is 1128 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
The Three Sisters Skyline 50K is an ultramarathon that takes runners on a fast, scenic course to the edge of the Three Sisters Wilderness, featuring approximately 3,700 feet of climbing. The race is known for its stunning views of the Cascade peaks and a course that is over 95% single-track trail.
The Three Sisters Skyline 50K is 50km long.
The Three Sisters Skyline 50K takes place in Sisters, Oregon, USA.
The Three Sisters Skyline 50K elevation gain is 1128 meters, which Runna classifies as a Hilly race.
The best way to train for the next race is to use a personalized training plan that takes into account your current running ability, schedule, and preferences.
This will help you steadily improve your running performance and get ready for the race without risking an injury.
Check out our training plans to find the best running program for your goals!
Which plan you choose will depend on your experience, schedule, objectives, and the date of the race.
Runna offers personalized training plans for every runner and every goal: Whether this is your first, 10th or 100th race, we'll help you get the most out of your training and smash your goals.
Check out our training plans to find the best running program for your goals!
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This event listing is for informational purposes only. Runna is not affiliated with, endorsed by, or sponsored by Three Sisters Skyline or Alpine Running, LLC. All event details are based on publicly available information and are provided solely to help users discover running events. Runna does not use any official logos, images, or proprietary content from this event or its organiser. Any trademarks or names mentioned are used descriptively to identify the event in a factual manner. For the most accurate and up to date information (including to register or purchase an entry to the event), please visit the Three Sisters Skyline website.