Backpack the Pacific Crest Trail It would take you five months to walk the 2,650-mile Pacific Crest Trail from Mexico to Canada. But for a long weekend that’s high on thrills per mile, try the 17-mile stretch through Oregon’s Three Sisters Wilderness. Hiking Frog Camp/Obsidian Trailhead to South Sister Trailhead at Devils Lake. fir forests, waterfalls, jagged peaks, serene alpine lakes , plus the wondrous Obsidian Limited Entry Area, covered with the sharp-edged black rock.
