97 -> 970 -> 10. An excellent and scenic loop with smooth, lightly trafficked roads; the stretch of Highway 10 through the Yakima River canyon is a particularly nice ride. Not much of a shoulder at times, but there is *very* little traffic since it is made almost completely redundant by I-90. I found that the sweet spot is the (right-hand) narrow strip of pavement gradually worn smooth by the passage of many vehicles - you just have to stay a bit wary of getting run over.