BLM · USFS · Idaho

Frank Church-River of No Return Wilderness

Few places in America, and nowhere outside of Alaska, provide a wilderness experience to match the sheer magnitude of the Frank Church-River of No Return, the largest contiguous unit of the National Wilderness Preservation System in the Lower 48. It is second in size only to California's Death Valley Wilderness, which consists of many non-contiguous pieces. This area combines the old Idaho Primitive Area, the Salmon Breaks Primitive Area, territory on six national forests, and a small swath of land managed by the Bureau of Land Management. Senator Frank Church played a key role in the passage of the Wilderness Act of 1964, and his name was added to this Wilderness in 1984, shortly before his death.

Description from Wilderness Connect (wilderness.net).

Wilderness2.4 million acresBLM · USFSIDDesignated 198047 campgrounds within 10 mi11 Forest Service sites299 trails
Official page at Wilderness Connect ↗
Frank Church-River of No Return Wilderness
Photo from Wilderness Connect, wilderness.net
1 fire
active
Scf Nz Pile Burn Rx (prescribed burn) · 49 mi from the center · 605 acres
Interagency incident data as of 2026-11-01
Incident details ↓

Facts

Where each comes from ↓
DesignationWilderness
Managed byBureau of Land Management and U.S. Forest Service
StateIdaho
Size2.4 million acres
Designated1980, by Congress
Center point45.07° N, 114.96° W
Night skyAbout as dark as the ground gets (Black Marble reading 16)

Boundary map

1 outline

Boundary, simplified to about 0.005 degrees Federal campground Forest Service recreation site

The outline is the agency boundary simplified for display, so small parcels and inholdings may not show. The agency page has the authoritative map.

Weather by month

NOAA climate normals →
Weather by month near Frank Church-River of No Return Wilderness20°30°40°50°60°70°January: 1.21 inches of precipitation, 9.4 inches of snowFebruary: 0.87 inches of precipitation, 5.3 inches of snowMarch: 1.07 inches of precipitation, 3.0 inches of snowApril: 1.49 inches of precipitation, 0.3 inches of snowMay: 1.84 inches of precipitation, 0.2 inches of snowJune: 1.73 inches of precipitation, 0.0 inches of snowJuly: 0.99 inches of precipitation, 0.0 inches of snowAugust: 0.69 inches of precipitation, 0.0 inches of snowSeptember: 1.10 inches of precipitation, 0.0 inches of snowOctober: 1.36 inches of precipitation, 0.2 inches of snowNovember: 1.44 inches of precipitation, 4.7 inches of snowDecember: 1.09 inches of precipitation, 8.1 inches of snowJanFebMarAprMayJunJulAugSepOctNovDecJanuary: 23.6°F averageFebruary: 28.9°F averageMarch: 38.2°F averageApril: 45.8°F averageMay: 53.9°F averageJune: 60.9°F averageJuly: 69.7°F averageAugust: 68.4°F averageSeptember: 58.7°F averageOctober: 45.5°F averageNovember: 32.7°F averageDecember: 23.5°F average0 in2 in4 in6 in8 in10 inTemp °FInches
The line is the average temperature and the bars are average precipitation at Taylor Rch, 6 miles from the center point at 3,835 feet, station USC00109000 in the NOAA monthly climate normals for 1991 to 2020. Precipitation totals about 15 inches a year. The dotted line is average snowfall, about 31 inches a year on the same inches scale.

Large units span more than one climate. The station stands in for the center point, and the outer parts of the boundary can be warmer or colder.

Where to camp

Campsite Atlas →

2 federal campgrounds sit inside the boundary and 45 more are within ten miles of it. Nearest first. Distances are from the campground point to the boundary edge, from the Campsite Atlas index.

FS · Inside
Chamberlain Basin Camping Area
First-comeID
FS · Inside
Mackay Bar Campground
First-comeID
FS · under 0.1 mi
Boundary Creek Campground
Reservable5 sites
FS · under 0.1 mi
Lola Creek Campground
First-come21 sites
FS · under 0.1 mi
Beaver Creek Campground
First-come8 sites
FS · under 0.1 mi
Dagger Falls Campground
First-comeID
FS · 0.1 mi
Bear Valley Campground
First-comeID
FS · 0.1 mi
Ebenezer Campground
First-come11 sites
Show 4 more

35 more within ten miles are not listed here.

Trailheads and sites

Forest Service directory · 11

The Forest Service lists 11 recreation sites inside this wilderness, among them 5 trailheads, 3 campgrounds, 2 picnic areas, 1 interpretive site. Each links to its page on fs.usda.gov, which carries the season, fees and current status.

Show all 11

Distance is from the center point of the boundary, not from a road or town.

Trails

Trailhead Atlas →

299 named Forest Service trails enter this wilderness, 2,638 miles in all. The 10 longest are listed here.

TrailMiles
Middle Fork ↗71.8
Chamberlain ↗44.7
Cold Meadows ↗36.7
Big Creek ↗34.2
Square Top-West Horse ↗33.4
Middle Fork River ↗31.6
Indian Creek ↗30.2
Bighorn Crags ↗29.7
Mosquito Ridge ↗27.3
Cottonwood Butte ↗25.9

Lengths and allowed uses come from the Forest Service trail layer by way of Trailhead Atlas. This trail list was copied from Trailhead Atlas on November 1, 2026 and is copied again on each weekly run. Trails in plain text have no page there yet.

Fire nearby

Within 50 miles · as of 2026-11-01
  • Prescribed
    Scf Nz Pile Burn Rx

    49 mi from the center point · 605 acres

Distance is to the reported incident point, not the fire edge, and is measured from the center of a boundary that may be many miles across. Check the agency page for closures.

Explore

Nearby on the other atlases

National Register listings within 15 miles · 43 in all · Register Atlas

Landmarks are listed first, then by distance from the boundary.

Guidebooks for Idaho

We earn a small commission if you buy through these links. It does not change what we list.

Titles come from Open Library's catalog, matched by subject heading or by title.

Reference

Questions people ask

How big is Frank Church-River of No Return Wilderness?

2.4 million acres.

Source: Wilderness Connect

Who manages Frank Church-River of No Return Wilderness?

Bureau of Land Management and U.S. Forest Service share management. The Bureau of Land Management portion is the largest in the wilderness record.

Source: Wilderness Connect

What state is Frank Church-River of No Return Wilderness in?

Idaho.

Source: Wilderness Connect

When was Frank Church-River of No Return Wilderness designated?

Congress designated it in 1980.

Source: Wilderness Connect

Can I camp at Frank Church-River of No Return Wilderness?

Camping inside a wilderness is usually allowed away from roads, with no facilities, and the managing agency page has the permit rules. The federal campgrounds within ten miles are listed under Where to camp.

Source: Where to camp

How do I get to Frank Church-River of No Return Wilderness?

A point inside the boundary is at 45.066° N, 114.965° W. The official page carries directions and the office address.

Source: Wilderness Connect

Is there a fire near Frank Church-River of No Return Wilderness right now?

1 active incident within 50 miles as of 2026-11-01, the nearest Scf Nz Pile Burn Rx at 49 miles. Distance is to the reported incident point, not the fire edge.

Source: Fire nearby

Are there historic places near Frank Church-River of No Return Wilderness?

The National Register has 43 listings within 15 miles, including Arctic Point Fire Lookout and Butts Point Creek Fire Lookout.

Source: Register Atlas

Sources

  • Boundary, name, acreage, designation year, states and description: Wilderness Connect.
  • Campgrounds: the Campsite Atlas index of federal campgrounds, matched to this boundary at build time.
  • Trailheads and sites: the Forest Service Recreation Opportunities layer, points inside the boundary.
  • Trails: the Trailhead Atlas open-data file of Forest Service trails, matched on the wilderness each trail enters.
  • Night sky: NASA Black Marble (VIIRS, 2016 composite) sampled at zoom 6 around the center point.
  • Weather, alerts, air quality, river flow and earthquakes load live in your browser from NWS, AirNow, USGS and iNaturalist when you open the page.