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Castle Mountains

Saturday, December 09, 2017

Alt Names

White Sulpher Springs, White Sulphur Springs, Grasshopper, Lewis And Clark National Forest, White Sulpher Springs Ranger District, Four Mile Creek, Horse Park, Beartrap Peak, Willow Creek, Woodchuck Mountain, Elk Peak, Castle Lake, Richardson Creek Trail

Last Known StatusOpen

This remote area has about 30 miles of mostly single track trails that wind through the Castle Mountains. Most of the trails form interconnecting loops, with some trails open to ATVs 50 inches or less.

Two primitive campgrounds are available that offer direct trail access. Grasshopper Campground has 12 sites and potable water but charges a small fee. Richardson Campground is free but only has three campsites but has no water. Both campgrounds have a vault toilet.

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Nearest CityWhite Sulpher Springs, MT
AddressFour Mile Creek Road, White Sulphur Springs, MT 59645
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Street Map
Trail MapGo To Trail Map
From: Livingston, MT
1) Take I-90 east to exit 340
2) Turn left (north) onto US-89 north, continue 65 miles
3) Turn right (east) onto Main Street/US-12, continue about 7 miles
4) Turn right (south-east) onto Fourmile Creek Road, continue about 4 miles
5) At fork turn right for Grasshopper Campground or turn left for Richardson Campground.


LandNational Forest


Our RatingRatingGood    
Recommended Stay1-2 Days
Comments(Scroll Down For Visitor Reviews & Comments)


Permit RequiredYesMontana OHV Permit
Dates OpenDecember 1 - October 14
Spark ArrestorYesA spark arresting silencer or end cap is required for all vehicles.
Noise LimitYes (96 dB)
Whip FlagsNot Required
Maximum Vehicle WidthYes (50 inches)has entrance gate or posts
Allow Dirt Bikes, Trail Bikes and Motorcycles MotorcyclesPermitted
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsSome Areas(maximum width 50 inches)
permitted on Trails 618, 716, 717, 719, 725
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTVs / SXSSome Areas(maximum width 50 inches)
permitted on Trails 618, 716, 717, 719, 725
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4s / Jeeps (registered)Prohibited
Dune Buggy/Sand Rail
4x4 (unregistered)
Two Strokes /
2 Cycle Engines
No Restriction
Helmets RequiredYouth Onlyrequired for persons under 18 by state law
(RiderPlanet strongly recommends helmets for all riders.)
BicyclesNo Restriction
HikingNo Restriction
HorsebackNo Restriction
Camping / Overnight RV Parking CampingSome Areas(camp in developed sites only)
Campfire Restrictions CampfiresSome Areas(permitted in developed campsites only)
Night RidingUnknown
Cross CountryProhibitedstay on trail
Emergency / Law Enforcement
Insurance*Disclaimer: RiderPlanet recommends that all riders obtain motorcycle insurance or ATV / UTV insurance before visiting any of the locations depicted.


Tent: $10.00
RV: $10.00
Addtl. Vehicle: $0.00
Grasshopper Campground Fee


Contact InfoLewis And Clark National Forest - White Sulphur Springs District
204 W. Folsom
White Sulphur Springs, MT 59645
(406) 547-3361



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Approx Size64,000 acres (100 sq mi)
Miles Of Trail30
Climate TypeForest
Elevation5750 to 8589 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Single TrackThis national forest has many single track trails.Many
HazardsThis trail has few hazards.Few(hazards assumed marked but use caution)
Easy Terrain NoviceThis trail has little beginner terrain.Little
Moderate Terrain AmateurThis trail has mostly intermediate level terrain.Mostly
Difficult Terrain ExpertThis trail has some expert terrain.Some


First Aid First Aid5-20 Miles (W)Mountain View Medical Center (406) 547-3321
Gasoline Gasoline5-20 Miles (W)Town Pump (406) 547-3310
Diesel Diesel5-20 Miles (W)Town Pump (406) 547-3310
Potable Water WaterOn SiteGrasshopper Campground (406) 547-3361
RV Hookups RV Hookup5-20 Miles (W)Conestoga Campground (406) 547-3890
RV Dump Station RV Disposal5-20 Miles (W)Conestoga Campground (406) 547-3890
Primitive Camping CampgroundOn Site
Convenience Store Conv Store5-20 Miles (W)Town Pump (406) 547-3310
Swimming Swim AreaWhite Sulpher Springs, MT
Body of Water Water BodyOn Site
Boating Launch Boat Ramp5-20 Miles (NW)Newlan Creek Reservoir Boat Ramp
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