White River 25K, 50K, 50 Mile
Rainshadow Running race rules say well-behaved, leashed dogs are welcome on the course and at the finish line.
Dog-friendly trail race directory / WA
Browse trail races that go beyond pet-friendly venue language and include public source text saying dogs can participate on course in Washington.
Trail races in Washington are filtered from the same source-reviewed Dog Powered Events directory, with direct links back to public event sources.
Use the state page for local discovery, then confirm the current organizer source before registering or traveling.
Directory
Rainshadow Running race rules say well-behaved, leashed dogs are welcome on the course and at the finish line.
Official organizer page labels The Ruff as a dog-friendly event; NACC lists it as a Dog Friendly Trail Race.