Whatever your outdoor obsessions may be - running big-water rivers, hiking through bear country, horsepacking through glacier-draped high country, fly-fishing a blue-ribbon trout stream - you'll find Bitterroot National Forest one of the world's last great places. The 1.6-million-acre Bitterroot, near Missoula, Montana, is without question one of the marquee tracts in the national-forest system. It encompasses parts of the biggest, most rugged wilderness areas in the Rockies.