2 ultra events in Benton County, Oregon

From big races to Saturday morning group runs—find ultra events and connect with the local endurance sports community.

• McDonald Forest [mac50k.org] [Register at ultrasignup.com] - Facebook
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  Sat, May 02, 2026 at 8:00 AM

  50k Ultra

  8692 NW Peavy Arboretum Road, Benton County, Oregon, United States
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• Marys Peak Trail Run [oregontrailruns.com] [Register at ultrasignup.com] - Facebook
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  Sat, Jun 13, 2026

  25k 50k 100k Run Trail Ultra

  35177 Tum Tum Rd, Benton County, Oregon, 97326, United States
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