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South Hills

Thursday, July 11, 2019

Other Names

Third Fork Heart Attack Loop, Wahlstrom Hollow Trail #238, Third Fork Rock Creek, Magpie Basin, Sawtooth National Forest, Dry Flat Spring, Cow Spring, Elk Butte, Cotton Spring, Bear Gulch, Pike Mountain, Telephone Canyon, Harrington Peak, Martindale Fork, Rock Creek Trail System, Diamondfield Jack Campground, Porcupine Springs Campground, Pettit Campground, Minidoka Ranger District, Cassia Mountains

Last Known StatusOpen

If you are coming to southern Idaho to ride, this spot should not be overlooked. With over 50+ miles of designated ATV trails, twisty mountain single track, secluded swimming holes, cool camping spots and scenery ranging from high desert rolling hills to rugged, forested mountain and canyon views, there is something for everyone.

Most of the trails are marked and form both short and long loops. Camping ranges from primitive tent sites to designated campgrounds. Bear Gulch, Porcupine Springs, Bostetter and Father and Sons caters to the ATV/side by side crowd while motorcycle riders will find direct access to single track at Harrington Fork (day use only), Third Fork and Fifth Fork trailheads.

Most campgrounds are free but are on a first come basis. Porcupine Springs, Lower and Upper Penstemon Campgrounds charge a small fee but can also be reserved.

Off road vehicles must display a current Idaho OHV Sticker. Note that this trail system is also very popular with mountain bikes and equestrian riders, so use caution. Those on street legal motorcycles can head in a southern direction toward the town of Jackpot which has lodging, restaurants, a general store and gas station.

Trail Map... Nearby ATV Trails...


Permit RequiredYesIdaho OHV Registration Sticker
Dates OpenMay 16 - November 30
Other ATV Stickers AcceptedYes(WA, OR, NV, UT, MT)
Spark ArrestorYesA spark arresting exhaust silencer or end cap is required for all vehicles.
Noise LimitYes
Whip FlagsNot Required
Maximum Vehicle WidthYes (50 inches)has entrance gate or posts
Allow Dirt Bikes, Trail Bikes and Motorcycles Motorcycles & Dirt BikesPermitted
Allow All Terrain Vehicles / Quads / Four Wheelers ATVsPermitted(maximum width 50 inches)
Allow Utility Terrain Vehicles, Side by Sides (SXS), RZR UTVs / SXSPermitted(maximum width 50 inches)
Allow 4x4 Jeeps, SUVs and 4 x 4 Trucks with License Plates 4x4s / Jeeps (registered)Some Areaspermitted on designated forest service roads
Dune Buggy/Sand Rail
4x4 (unregistered)
Permitted(maximum width 50 inches)
2 Cycle EnginesNo Restriction
Motocross Helmet RequiredYouth Onlyrequired 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 CampfiresSome Areas(permitted in developed campsites only)
Night RidingUnknown
Trail BlazingProhibitedstay on designated trails
AlcoholNo Restriction
Rule EnforcementFew/Periodic
CommentMost trails open around mid May through end of November but some open in June through September - see Forest Service MVUM for details.


AreaMotorized Trails
LandNational Forest


CommentBear Gulch, Bostetter and Father and Sons Campgrounds are free. Porcupine Springs is $14/night, Lower and Upper Penstemon Campgrounds are $8/night.


Prosfree, miles of designated trails, cool single track, lots of free camping, nice swimming holes
Conspoor cell reception
Our RatingRatingExcellent
Recommended Stay1 Week
Comments(Scroll Down For Rider Reviews & Comments)


Nearest CityHansen, ID
AddressRock Creek Road, Hansen, ID 83334
Go Back To Idaho List
Street Map
Trail MapGo To Trail Map
From: Twin Falls, ID
For Harrington Fork Picnic Area (single track only):
1) Take Hwy 30 east toward Hansen
2) Turn right (south) on Rock Creek Road
3) Continue about 17 miles
4) Trailhead will be on your left (east).

For Third Fork Trailhead (single track only):
1) Continue south past Harrington Fork Picnic Area about 4 miles
2) Trailhead will be on your left (south).

For Porcupine Springs Campground:
1) Continue south on Rock Creek Road past Third Fork Trailhead about 21 miles
2) Campground entrance is on the right.

From Jackpot, NV:
For Bear Gulch Campground
1) Take Hwy 93 north about 19 miles
2) Turn right (east) onto Shosone Basin Road, continue 4.8 miles
3) Turn right (south) onto Magic Hot Springs Road, continue about 2.5 miles
4) Veer left to stay on Shoshone Basin Road, continue about 4 miles
5) Turn left (north) Magic Mountain Road, continue about 3 miles
6) Bear Gulch Campground entrance is on the left (north).


Contact InfoSawtooth National Forest - Minidoka Ranger District
3650 South Overland Avenue
Burley, ID 83318-3242
(208) 678-0430
Contact InfoIdaho Parks And Recreation
5657 E. Warm Springs Ave
Boise, ID 83716
(208) 334-4197
CommentIdaho OHV Sticker Info


South Hills Trail Photo

South Hills Trail

Photo Submitted 7/3/2017 (Thanks!)


Submit a Photo!


Approx Size12,800 acres (20 sq mi)
Miles Of Trail50
Climate TypeForest
Elevation5200 to 7400 ft.
Trail MaintenanceMarked, Not Rated, Lightly Maintained
Loose DirtThis trail has mostly loose dirt.Mostly
Hard PackThe trail has some hard pack terrain.Some
SandThis trail has little sandy areas.Little
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 some steep hills.Some
Water CrossingsThe trail has few water crossings.Few
Small JumpsThis trail has few small jumps.Few
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 many single track trails.Many
RoadsThis national forest has some roads.Some
IntersectionsThis trail has many intersections.Many
Rider TrafficThe national forest has some rider traffic on typical days.Some
ShadeThis national forest has many shaded areas.Many
Ranges/GunfireThis national forest has few shooting ranges or gunfire.Few
HazardsThis trail has few hazards.Few(hazards not marked)
Easy Terrain NoviceThis trail has mostly beginner terrain.Mostly
Moderate Terrain AmateurThis trail has some intermediate level terrain.Some
Difficult Terrain ExpertThis trail has little expert terrain.Little


Gasoline Gasoline20-30 Miles (N)Hansen
Diesel Diesel20-30 Miles (N)Hansen
Potable Water Water1-5 Miles (N)Steer Basin Campground
RV Hookups RV Hookup5-20 Miles (NW)Nat-Soo-Pah Hot Springs (208) 655-4337
RV Dump Station RV Disposal5-20 Miles (NW)Nat-Soo-Pah Hot Springs (208) 655-4337
Primitive Camping Campground1-5 Miles (N)Steer Basin Campground
Convenience Store Conv Store20-30 Miles (N)Hansen Market (208) 423-5547
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