Lost River Valley

Lost River Valley

Big Lost River & White Knob Mts. - cropped


The Lost River Valley in eastern Idaho is home to a diverse terrain. Located in the heart of Idaho surrounded by Idaho’s tallest peaks, rich forests and an abundance of wildlife, it seems barely touched by human hands. The Valley encompasses the communities of Arco, Moore, and Mackay…home of the legendary Mackay Rodeo.


ACTIVITIES in the Lost River Valley are unlimited. Within an hour you can travel from the volcanic landscape of Craters of the Moon to Mount Borah, the top of Idaho.

This is a outdoor enthusiast’s paradise. The crystal clear waters of the Big Lost River make it a prime destination for fly fisherman worldwide. Surrounded by hundreds of miles of trails, the Lost River Valley lives up to its name, ATV Capital of Idaho.

No matter which adventure is your passion, fishing, hunting, hiking, golfing, camping, boating, golfing or exploring ghost towns, you will find it in Lost River Valley, Idaho.



Bear Bottom Inn…412 Spruce Street – 208 589-8939 & 208 588-2483

Lost Rivers Bed & Breakfast…4505 Old Loop Road – 208 932-1842

Joe Fallini Campground & RV Park…6 Miles N of Mackay – 208 588-2224

Moose Crossing RV & Cabins…3798 N. Highway 93 – 208 588-2994

River Park Campground & RV Park…717 Capitol Avenue – 208 588-2296

Wagon Wheel Motel & RV Park…809 Custer Street – 208 588-3331

White Knob Motel & RV Park…4249 N. Highway 93 – 208 588-2622

Wild Horse Creek Ranch…4387 Wild Horse Creek Road – 208 588-2527

Windy Sage Farmstay B&B…4485 Old Loop Road – 208 716-8269, 208 716-0776


King Mountain B&B…3258 N 3350 W – 208 554-3343


Arco Inn…540 W. Grand Avenue – 208 527-3100

DK Motel…316 S. Front Street – 800 231-0134, 208 527-8282

Craters of the Moon KOA…2424 N 3000 W – 208 527-8513

Lost River Motel…405 Highway Drive – 208 527-3600

Mountain View RV Park…705 W Grand Avenue – 208 527-3707