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Sunday, June 19, 2022

Other Names

Sawtooth National Forest, Ketchum Ranger District, Greenhorn Creek, Mahoney Butte, Poison Flat, Warfield Creek

Last Known StatusOpen

Located a short distance south of Sun Valley, Idaho, this part of the Sawtooth National Forest features miles of pure single track trails that form multiple loops and wind through grassy meadows, pine and aspen trees.

The trails are mostly smooth with some loose chunk rock and occasional tree roots with light to moderate elevation changes. Dirt bike riders should note that this area is popular with mountain bikes and hikers, so use caution.

The staging area offers plenty of room for parking and while there is no fee charged to park or ride, an Idaho OHV Registration Sticker is required for all dirt bikes. For current conditions contact the Ketchum Ranger District.

Trail Map... Nearby ATV Trails...


Permit RequiredYesIdaho OHV Registration Sticker
Dates OpenMay 1 through November 30
Other ATV Stickers AcceptedNoA non-resident registration sticker must be purchased. (As of January 2020, Idaho no longer honors stickers from other states.)
Spark ArrestorYesA spark arresting exhaust silencer or end cap is required for all vehicles.
Noise LimitYes (96 dB)
Whip FlagsNot Required
Maximum Vehicle Width
Allow Dirt Bikes, Trail Bikes and Motorcycles Motorcycles & Dirt BikesPermitted
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsProhibited
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTV & SXSProhibited
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4 & Jeeps (registered)Prohibited
Dune Buggy & Sand Rail
4x4 (unregistered)
2 Stroke EnginesNo Restriction
MX Helmet RequiredYouth Onlyyouth only required for persons under 18 by state law
(RiderPlanet strongly recommends helmets for all riders.)
Camping / Overnight RV Parking CampingSome Areas(camp in developed sites only)
Campfire Restrictions Campfires
Night RidingUnknown
Trail BlazingProhibitedkeep vehicle on trail
Rule Enforcement


AreaMotorized Trails
LandNational Forest




Our RatingRatingVery Good
Recommended Stay1-2 Days
Comments(Scroll Down For Rider Reviews & Comments)


Nearest CityHailey, ID
AddressGreenhorn Gulch, Hailey, ID 83333
Go Back To Idaho List
Trail MapGo To Trail Map
From: Twin Falls, ID
1) Take Hwy 93 North about 25 miles
2) Continue straight (north) onto Hwy 75, continue about 48 miles
3) Turn left (west) onto Greenhorn Gulch Road, continue 3.6 miles toward staging area.


Contact InfoSawtooth National Forest - Ketchum Ranger District
206 Sun Valley Road
Sun Valley, ID 83353
(208) 622-5371
Contact InfoIdaho Parks And Recreation
5657 E. Warm Springs Ave
Boise, ID 83716
(208) 334-4197
CommentIdaho OHV Sticker Info


Greenhorn Trail Photo

Greenhorn Trail

Photo Submitted 12/4/2021 (Thanks!)


Submit a Photo!


Miles Of Trail50
Climate TypeForest
Elevation5875 to 8400 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Loose DirtThis trail has little loose dirt.Little
Hard PackThe trail has mostly hard pack terrain.Mostly
SandThis trail has no sandy areas.None
MudThe trail has little mud after it rains.Little
DustThe trail has little dust on typical days.Little
RocksThis trail has little rocks.Little
TreesThe trail has many trees.Many
Steep HillsThis trail has many steep hills.Many
Water CrossingsThe trail has few water crossings.Few
Small JumpsThis trail has no small jumps.None
Large JumpsThis trail has no large jumps.None
BermsThe trail has many berms.Many
Sand/Gravel PitsThis national forest has no sand or gravel pits.None
Single TrackThis national forest has almost all single track trails.All
RoadsThis national forest has few roads.Few
IntersectionsThis trail has some intersections.Some
Rider TrafficThe national forest has few rider traffic on typical days.Few
ShadeThis national forest has many shaded areas.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


Gasoline GasolineHailey, ID
Diesel DieselHailey, ID
Potable Water WaterHailey, ID
RV Hookups RV HookupHailey, ID
RV Dump Station RV DisposalHailey, ID
Primitive Camping CampgroundHailey, ID
Convenience Store Conv StoreHailey, ID
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