Frank Church-River of No Return Wilderness

Discover the unparalleled majesty of the Frank Church–River of No Return Wilderness—a vast expanse of soaring, rugged mountains, spectacular river canyons, and some of the wildest whitewater in the nation. Dominated by the massive Salmon River Mountains to the south of the Main Salmon and west of the Middle Fork, this iconic landscape also features the dramatic Clearwater Mountains to the north and the striking Bighorn Crags to the east.

Carving through this wilderness is the legendary Salmon River Canyon—one of the deepest gorges in North America, even surpassing the depth of Arizona’s famed Grand Canyon. Here, instead of sheer cliffs alone, visitors are treated to an ever‑changing panorama of forested ridgelines, sculpted bluffs, towering rock formations, and isolated crags rising from the river’s edge like natural cathedrals.

Designated by Congress in 1980, the Frank Church–River of No Return Wilderness spans an impressive 2,366,757 acres, making it the largest contiguous wilderness in the Lower 48. Managed collaboratively by two Forest Service regions and four national forests—Salmon-Challis, Payette, Nez Perce–Clearwater, and Bitterroot—this iconic area stands as a crown jewel of the National Wilderness Preservation System. The Salmon-Challis National Forest proudly leads its coordinated stewardship from headquarters in Salmon, Idaho.

Its name reflects both its dramatic geography and the legacy of those who fought to protect it. Early river travelers spoke of the “River of No Return,” where swift water once made upstream passage nearly impossible. Today, the name endures as a nod to the region’s wild heart. In 1984, Congress honored Senator Frank Church—whose unwavering dedication helped preserve this extraordinary Idaho landscape—by adding his name to the wilderness.

For thousands of years, humans have left their mark here. Artifacts from Shoshone and Nez Perce peoples, journals from fur trappers and missionaries, and remnants of early mining and homestead settlements offer a window into the area’s deep and diverse cultural history, enriching the wilderness experience with stories of those who came before.

General Wilderness Prohibitions

• Possessing or using a motor vehicle, motorboat or motorized equipment except as authorized by federal law or regulation.  36 CFR 261.18(a)
• Possessing or using a hang glider or bicycle. 36 CFR 261.18(b)
• Landing of an aircraft, or dropping or picking up of any materials, supplies, or persons by means or aircraft including a helicopter.  36 CFR 261.18(c)

Prohibited by Special Order in the Frank Church – River of No Return Wilderness

• Permit required to float Salmon River (36 CFR 261.10k).
• Any group over 20 people and 20 head of stock (36 CFR 261.57b & 261.58f).
• On trails, stock must be ridden or led in single file (no loose herding) (36 CFR 261.58aa).
• Caching storing equipment, personal property, or supplies for more than 14 consecutive days within any 45-day period (36 CFR 261.58a &261.57f).
• There may be other special regulations in specific areas.  Contact a Forest Service office before you visit to get information on any fire, camping, group size, or grazing restrictions.

Information about hunting and fishing in the FC-RONR can be obtained from the Idaho Department of Fish and Game, 1540 Warner Avenue, Lewiston, ID 83501, 208-799-5010 or the Montana Division of Fish, Wildlife, and Parks, 3201 Spurgin Road, Missoula, MT 59801, 406-542-5500.

More important than regulations are the responsibilities each traveler has to protect the Wilderness. It is necessary for all users of the FC-RONRW to practice minimum impact camping techniques. The motivation to do this derives from a respect for the land and water and consideration and courtesy for those who will follow after you. Fundamental principles and techniques have been developed using the “Leave No Trace” philosophy. A complete narrative and description for all of the principles can be found on the numerous “Leave No Trace” websites. Listed below are some of the most critical practices:

• Travel in small groups, usually no more than 10 to 12 people. The maximum group size is 20, without prior approval. Be quiet and unobtrusive. Respect solitude, one of the most valuable wilderness resources.
• When traveling the trails, stay on the trails to avoid widening them and causing erosion. Do not cut switchbacks.
• Camp out of sight and sound of other campers, and where possible, at least 200 feet from rivers, streams, and trails.
• Keep soap and detergent out of hot springs, lakes and streams. Wash and rinse using buckets or pans and dispose of water at least 200 feet from lakes or streams.
• Select a camp that has already been impacted, if you have a larger group (more than 6).
• Pick up and pack out all unburnable litter and trash. If you have camped in a popular area, leave the campsite in the best possible condition for the next users. If you have camped in a little-used area, leave absolutely no evidence that you have been there.
• Be responsible for human waste. Carry a small shovel or trowel to help dispose of human feces. When traveling overland, bury feces. When floating the rivers, use the required sealed portable toilets and pack them out.
• Do not build facilities like lean-tos, fire circles, bough beds, or gear racks.
• If fires are permitted (not in fire-restrictions), build a small one, and use only dead or down wood of small diameter. Remove bits of garbage that will not burn and pack out.
• Feed for stock must be “Weed Seed Free” supplemental feed, when needed, and should be alfalfa hay, processed pellets, and grain in order to prevent non-native plans from getting established in the Wilderness. No straw is permitted in the Wilderness. If you bring salt in for stock, it must be mixed with grain, or in block form, secured off the ground, and removed when you leave.
• The Antiquities Act prohibits the collection of archeological artifacts. Look at the many artifacts but leave them for the next visitor to enjoy.

Learn more about the Frank Church River of No Return Wilderness.