FS · Custer Gallatin National Forest

Spire Rock Campground

6 of 20 sites fit 42 ft

Book 003 Host, 004, 008, 011, 013, 001

Longest for your rig: 50 ft
Booking: Reservable
Hookups: water · sewer
Entry: Back-in only
ADA sites: —
Elevation: 5,519 ft
Vehicles: up to 4

Book on Recreation.gov →the official reservation system; we take no cut

Getting there

What the agency says about the road in. For a long rig this is often the binding constraint — a site that fits is no use behind four miles of shelf road — and none of it appears in the campsite data.

Unpaved approachThe last 3 miles are on a gravel road.quoted from the driving directions

Every bookable site

The 6 sites that take a 42 ft rig, drawn where they sit.

Fits your 42 ft rig — 6 sites

003 Host50 ft driveway · back · gravel · 2 vehicles 00450 ft driveway · back · gravel · 2 vehicles 00848 ft driveway · back · gravel · 2 vehicles 01145 ft driveway · back · gravel · 2 vehicles 01345 ft driveway · back · gravel · 2 vehicles 00142 ft driveway · back · gravel · 2 vehicles

Too short for 42 ft — 13 sites

Length never published — 1 site

012no length given · back · gravel · 4 vehicles

fits 42 ft (6) too short (13) not published (1)Click a site for what it publishes and a way to book it. Positions are the agency’s; roads, water and terrain are not shown, so this says where the sites are and not how you drive between them.

Within 60 miles

Map marker#	Campground	Distance	Sites	Longest for your rig	Hookups
1	Garnet Mountain Fire Lookout MT · cabin	1 mi S	1	—	none
2	Greek Creek Campground MT	4 mi S	14	50 ft	none · pull-through
3	Little Bear Cabin MT · cabin	5 mi NE	1	—	none
4	Swan Creek Campground MT	5 mi S	13	50 ft	none
5	Moose Creek Flat Campground MT	6 mi S	13	60 ft	none · pull-through
6	Moose Creek Group Site MT · group	6 mi S	1	—	none

this campground numbered to match the tableClick a marker for what it is and how far. Straight-line distances, not driving distances; the inset shows where this sits in the state. For directions, open this location in OpenStreetMap.

Everything else on record

Bookable sites: 20
Longest driveway: 50 ft
Max occupancy per site: 30
Reservable sites: 19
Coordinates: 45.4414, -111.2064
Phone: 406-646-1012
Elevation: 5,519 ft

Sources

Recreation Information Database (RIDB) · fetched from https://ridb.recreation.gov/api/v1/facilities/233746 · retrieved 2026-08-17 · public-domain
USGS Elevation Point Query Service · fetched from https://epqs.nationalmap.gov/v1/json · retrieved 2026-08-17 · public-domain