You've got a ton of fabulous places within a days drive of you. You mentioned bikes/mountains/national parks....Glacier National Park is 1 (long) days drive from you, and along the way is the Haiwatha Trail for biking.
a few others that come to mind...
Bend/Sunriver/Sisters Oregon (HUGE on biking...among other many other things)
Hells Canyon/Snake River area
Mt. Hood area
LOTS of great camping along the Oregon/Washington Coast
Route of the Hiawatha (Official Website) > The Trail
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