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Yankee Fork State Park

Monday, May 13, 2019

Alt Names

Bayhorse ATV Trails, Challis Salmon National Forest, Mt. Greylock, Lombard ATV Trail

Last Known StatusOpen

This area offers miles of marked trails that sprawl over BLM and National Forest land. The Lombard Trail starts from the Yankee Fork Visitor Center and heads west about 13 miles toward the ghost town of Bayhorse, which is a center point for more trails.

Vegetation consists of scrub and sage brush at lower elevations and mixed pine trees at higher elevations. The parking area next to the Yankee Fork State Park is open year round however the Bayhorse parking area is closed during the winter months.

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Nearest CityChallis, ID
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Street Map
Trail MapGo To Trail Map
From: Challis, ID
1) Take Hwy 93 south about 1 mile
2) Turn right (west) on SR-75, then immediatley turn right (north) into the Visitor Center.

For Bayhorse Staging Area:
3) Continue west on SR-75 past the visitor center about 8 miles
4) Look for bridge crossing on the right, cross over the Salmon River
5) Turn right (east) on Centenial Flat Road, continue about 100 yards
6) Turn left (north-west) on Bayhorse Creek Road, continue about 3 miles
7) Staging area is on the right.


LandBLM, National Forest, State Forest


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


Permit RequiredYesIdaho OHV Registration Sticker
Dates OpenYear-Round
Reciprocity OfferedUnknown
Spark ArrestorYesA spark arresting 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 MotorcyclesPermitted
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsPermitted
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTVs / SXSSome Areas
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4s / Jeeps (registered)Some AreasNot Recommended
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 strongly recommends that all visitors get insurance for their ATV, UTV or motorcycle before visiting any of the locations shown on this website.




Contact InfoYankee Fork State Park
24424 Hwy 75
Challis, ID 83226
(208) 879-5244
Contact InfoBLM - Challis Field Office
1151 Blue Mountain Road
Challis, ID 83226
(208) 879-6200
Contact InfoSalmon-challis National Forest - Yankee Fork Ranger District
HC 63, Box 1669, Hwy 93
Challis, ID 83226
(208) 879-4100



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Miles Of Trail75
Climate TypeForest
Elevation5000 to 8000 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Loose DirtThis trail has some loose dirt.Some
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 some dust on typical days.Some
RocksThis trail has little rocks.Little
TreesThe trail has many trees.Many
Steep HillsThis trail has some steep hills.Some
Single TrackThis national forest has some single track trails.Some
IntersectionsThis trail has some intersections.Some
Rider TrafficThe national forest has some rider traffic on typical days.Some
HazardsThis trail has few hazards.Few(hazards assumed marked but use caution)
Easy Terrain NoviceThis trail has some beginner terrain.Some
Moderate Terrain AmateurThis trail has mostly intermediate level terrain.Mostly
Difficult Terrain ExpertThis trail has little expert terrain.Little


First Aid First Aid30+ Miles (SW)St. Luke's Wood River Medical Center (208) 727-8800
Gasoline GasolineChallis, ID
Diesel DieselChallis, ID
Potable Water Water1-5 Miles (N)Challis Valley RV Resort (208) 879-2393
RV Hookups RV Hookup1-5 Miles (N)Challis Valley RV Resort (208) 879-2393
RV Dump Station RV Disposal1-5 Miles (N)Challis Valley RV Resort (208) 879-2393
Primitive Camping Campground5-20 Miles (SW)Bayhorse Recreation Site (208) 879-6200
Convenience Store Conv Store1-5 Miles (N)Valley Junction (208) 879-2448
Swimming Swim Area1-5 Miles (NE)Challis Hot Springs (208) 879-4442
Body of Water Water BodyOn SiteSalmon River
Boating Launch Boat Ramp1-5 Miles (S)Challis Day Use Area (208) 879-6200
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