This point-to-point 100 mile trail race, starts in Oregon's premier running town of Bend and finishing in the idyllic mountain town of Sisters. The race has 10,700ft of gain and 11,200ft of loss with 13 full aid stations. You will finish on the Sisters School District track.
Come and bring your family and stay after (or before) the race and enjoy the mountain towns of Bend and Sisters!
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The course consists of: 84% single-track trails, 12% dirt road, 2% two-track trail, 2% pavement
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The race is a Western States 100 qualifier.
AID STATIONS
Aid stations will have the following: Peanut Butter & Jelly, Precision chews & gels, Precision electrolyte drink, water, coke, ginger ale, chips, cookies, and an assortment of other items. 1-3 hot items (broth, soup, bacon, quesadillas, pancakes, etc) for the night-time aid stations (AS8-AS13)
All Alpine Running events are cupless, so please bring a cup with you.
*We don't wheel our courses. With the course change, the distance should still be very close to 100 miles.
CUT OFFS
To keep runners on track and respecting our amazing volunteers' time, cut off's have been established throughout the race. These are times when you must be LEAVING the aid station.
AS4 (Mile 26.4) - 2PM
(8 HOURS)
AS5 (Mile 33.7) - 4:30PM
(10.5 HOURS)
AS7 (Mile 48.4) - 9PM
(15 HOURS)
AS9 (Mile 63.5) - 3AM
(21 HOURS)
AS10 (Mile 73.8) - 6AM
(24 HOURS)
AS11 (Mile 80.8) - 8AM
(26 HOURS)
AS12 (Mile 85.3) - 9:30AM
(27.5 HOURS)
AS13 (Mile 92.5) - 12PM
(30 HOURS)
FINISH - 2:01:18PM
(32:01:18 HOURS)
Trail Work/Volunteer Requirement Mandatory in 2026
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Entrants will need to complete 8 hours of trail work or volunteer at an ultra. We love to see runners giving back directly to the trails they recreate on and the trail running community as a whole. Trail work/volunteer work must be completed between September 1, 2025 and July 19, 2026. Trail work should be completed with an official trail organization - PCTA, COTA, STA or another trail stewardship organization. Many race directors also coordinate trail work. So doing 8 hours of trail work with a race director will also fulfill this requirement.
Volunteering at another trail running event - manning an aid station or sweeping an ultra - will satisfy the requirement. Volunteering at Oregon Cascades 100 also counts towards this requirement.
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Crewing and pacing at a race do not qualify as trail work/volunteering.
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We realize for some - living overseas, life, etc - it may not be possible to fulfill the trail work/volunteer requirement. If you are unable to complete the trail work/volunteer requirement in time, you have the option to donate to STA or COTA during (or after) registration. These organizations build and maintain the trails on the OC 100 course. Minimum donation is $125 and must be submitted no later July 19, 2026.
Failure to complete trail work/volunteer requirement or donation by July 19, 2026 will remove you from the entrants list or waitlist. ​
MISC
We've been allowed to hold this event in collaboration with the equestrian community. Please review these guidelines before race day.
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Please review this information on invasive plants/animals before race day.
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All of the trails are multi-use trails - mountain biking, hiking and horses (none of the trails allow ATVs or motorcycles).
