Chinook Pass (1656 m/5430 ft) branches off from Cayuse Pass and leads to Eastern Washington. The road takes you up to the treeline, and as you round Tipsoo Lake, you get the most spectacular vista of Mount Rainier. The view is especially impressive in the morning, when the glaciers glow in the early sunlight.
Chinook Pass is a high pass, so there tends to be gravel left over from the last snowfalls. A slightly wider tires will make the ride here much safer and more enjoyable.