OREGON BORDER to OR 66: Pass under thick white firs on this 40.8-mile leg in the Siskiyou Mountains. Bonus: Watch the sunrise over Shasta from the Grouse Gap shelter.

TIMOTHY LAKE to TIMBERLINE LODGE: Giant stands of Douglas fir and lodgepole pine dominate this 23-mile leg which finishes on the airy slopes of Mount Hood.

OR 66 to OR 140: Trek through grassy slopes around Old Baldy into the lava fields of Brown Mountain on this 34.2-miler.

OR 140 to OR 62: More than 200 lakes provide primo camping and swimming holes on this 45.3-mile stretch. At the beginning, scale 9,495-ft. Mt. McLoughlin for superb views.

OR 62 to OR 138: Crest the breathtaking caldera of Crater Lake on this 22.4-mile trip that ends in the flats of the Pumice Desert.

OR 58 to ELK LAKE: Find secluded lakeside campsites beneath towering cliffs on this 40-mile stretch in the Three Sisters Wilderness.

ELK LAKE to OR 252: Skirt the glacier-draped Three Sisters on this 26.6-mile trip full of excellent ridgetop campsites, aspen-lined lakes, and fields of black volcanic glass. Tip: Wear durable boots.

Take a 5-mile tour of grasslands and forests in this island-inside-an-island wildlife refuge.

Climb an easy 1,000 feet above the Clackamas River to a three-tiered waterfall that rivals almost anything in Maui.

Hike through some of Oregon's largest old-growth cedars and Douglas fir to a pair of pristine lakes where you can swim, fish, and camp on this 14.4-mile out-and-back.