Head southeast along 169 past Maple Valley and down to Black Diamond. In Black Diamond, just off 169 on a side sheet, are shops and the highly rated Black Diamond Bakery. Grab some sweet stuff and head back south on route 169 to Enumclaw. Check your gas gauge at this point. This is a real good place to get gas unless you get 100 mile to the gallon.
Gas stations get real thin from here on out.
At Enumclaw switch highways and head east along 410. You'll be traveling through the White River valley. The views are spectacular and along the way are places to pull off and take pictures. The highway takes you into the Mt. Rainier National Park. Keep your eyes open for hikers and signs pointing to Sunrise.