Sounds like an experience I had at Chinook Pass a few years back. At the top of Sourdough Gap, overlooking Sheep Lake, Mt. Adams, Mt. St. Helens and Naches Peak, Eugene/Portland stations were quite strong. Dropping from the gap it was very loud signals from eastern Washington (Spokane / Moses Lake) upwards of 200 miles. Walking a ways towards Crystal Lake as Mt. Rainier came into its big view, IBOC took over all adjacents to Seattle stations except a seldom few, and Victoria, CJSU-89.7 in Duncan, Vancouver, and Bellingham stations were very loud as well.
Speaking of, K294CV gets their KAWZ programming from KKJA-89.9 in Redmond OR. That station was confirmed in August 2020 on Burnt Mountain and Shellrock Peak, north of Rimrock (parts of which were on the southerly edge of last year's devastating Schneider Springs Fire).