The way points of this bicycle route:
The Redmond Cycling Club does this ride each year in June, ALL IN ONE DAY! Total distance is measured at 275 miles, all but 20 or so miles is on the shoulder of I-90. See comments for more info on the ride/route.
Big climb comin' up.
Get on I-90, stay on until Spokane!
I've heard this bridge has a tiny shoulder - cross wilth extreme caution!