Crazy Mountains Crossing is a 24.2 mile lightly trafficked point-to-point trail located near Melville, MT that features a lake. The trail is only recommended for very experienced adventurers and primarily used for hiking.
Tough trip but worth every step. Great photos, lots of goats, few people, too many cows near Sweetgrass Cr. was the only negative. Too bad it's not wilderness.
The best of the best. Well worth the commitment if you're experienced and fit.