Hikes›United States›Washington›Ahtanum State Forest›Grey Rock TrailGrey Rock TrailDay hike · 39 km · ↑ 1,484 mIn Ahtanum State Forest, WashingtonTrip reports and guidesCandice Burt: Grey Rock 50K Race Report: WA's Loveliest 50Kcandiceburt.com · Jul 2010 · trip reportWild Defined: Grey Rock 50K Race Report: WA's Loveliest 50Kwilddefined.com · Jul 2010 · trip reportGrey Rock Trail Runsracecenter.com · Jul 2023 · trip report