The Trail of Ten Falls is arguably one of the finest trails in the Pacific Northwest! This 7.6-mile route visits 10 different waterfalls, "and most of them are flat-out gorgeous," according to OregonHikers.org. OregonHikers also calls Silver Falls State Park, where the run is located, "the crown jewel of the Oregon State Parks system," in part because it's the largest at 9,000 acres, and in part because it contains this route.

Silver Falls State Park is home to the Trail of Ten Falls, but it also offers a plethora of other trails for running.

The Timberline Trail circumnavigates one of the most famous mountains in North America: Mount Hood. This iconic volcano soars above the surrounding landscape, visible for hundreds of miles around. If you want to experience this glaciated mountain peak in a truly visceral way, try running this 40-mile loop.

"The longest soft-surface hiking trail" within an urban boundary in the USA is found right here in Portland, Oregon. Designated as a National Recreation Trail, the Wildwood Trail winds through the expansive Forest Park for an astonishing 30 miles.

Tom, Dick, and Harry Mountain (TDH) crowns the top of the ridge occupied by the Mt. Hood Skibowl ski resort. In the summertime, the climb to the top of this ridge is popular for the stunning view that it affords of the majestic Mount Hood, located just across the road. Mount Hood soars into the sky, rising over 6,000 feet above the summit of TDH! The views of this impressive glaciated volcano that you'll gain on this trail are second to none.

At over 5,100 acres, Forest Park itself is one of the largest urban forest reserves in the country. The park "is a sanctuary of ancient moss-laden trees, winding along the side of ridges with ferns and wooden bridges over small washes that host beautiful streams in the spring," according to Mischa Egolf on TheTrek.co. Forest Park is home to the Wildwood Trail, but it also offers a plethora of other trails for running.