6139 W Trail Creek Rd, Mackay, ID 83251 (MLS# 26-334864)
$7,400,000
Mackay, ID 83251
MLS# 26-334864
4 beds | 4.5 baths | 4720 sqft

1 / 100
Property Description
These 589± acres feature exceptional improvements, seclusion, wildlife, scenery, extensive BLM boundary, productive cattle operations, and over a mile of both banks of the Big Lost River. Located 35± miles from Sun Valley over Trail Creek Pass and 20± northwest of Mackay. Large ranch holdings in the upper Lost River Valley rarely come for sale.
Details
Maps
Documents
Location, Tax and Misc
Legal: Call Listing Office
List Price Per SqFt: 1567.8
Taxes: 2240.48
Tax Year: 2025
Green Features: No
Lot / Acreage Info
Parcel Acres Apx: 589
Parcel Size Per: Assessor
Improvements: Yes
Remarks & Misc
Excluded Items: Home furnishings included in the offering. Remainder of Seller's personal property is excluded.
Possession: On Closing
General Property Description
Farm/Ranch Type: Cattle
Waterfront if Appcbl: Yes
Total SqFt Livable: 4720
SqFt Per: Owner
Sub Type: N/A
Bedrooms: 4
Baths: 4.5
Geo Lat: 44.053245
Geo Lon: -113.93327
Contract Info
Concession Negotiable: No
Directions: Call Listing Ofiice
Status: Active
List Date: 2026-08-21
Status Change Info
Realtor.com: Farms
Construction Type
Site-built (Stick): 1
Documents
Aerial View: 1
Topo Map: 1
Well Report: 1
Driveway
Dirt: 1
Gravel: 1
Exterior Finish
Wood: 1
Features Exterior
Barn: 1
Corral: 1
Greenhouse: 1
Horses Allowed: 1
Outbuildings: 1
Sprinkler Blw Ground: 1
Undergrnd Utilities: 1
Views: 1
Garage
Detached: 1
Items Included
All Ktchn Appliances: 1
Power
Electrical: 1
Road Access
Public: 1
Road Surface
Paved: 1
Roof
Metal: 1
Sewer
Septic: 1
Specialty Rooms
Guest House: 1
Style
1 Story: 1
Terms
Cash: 1
Water
Deeded Right-Surface: 1
Individual Well: 1
Water Rights: 1
Waterfront
Big Lost: 1
Zoning
Other: 1
Other Disclosures
Flood Plain: 1
Irrigation
Center Pivot: 1
Ditch/Flood: 1
Location Tax and Misc
Current Price: $7,400,000
Area: Lost River Valley
Street Number: 6139
Street Direction Pfx: W
Street Name: Trail Creek
Street Suffix: Rd
State/Province: ID
Zip Code: 83251
County: Custer
Assessor's Parcel #: RP08N21E021201
List Price: $7,400,000
Lot Acreage Info
Parcel SqFt Apx: 25656840
Property Features
Zoning: Other
Driveway: Dirt; Gravel
Road Surface: Paved
Road Access: Public
Water: Deeded Right-Surface; Individual Well; Water Rights
Sewer: Septic
Power: Electrical
Features Exterior: Barn; Corral; Greenhouse; Horses Allowed; Outbuildings; Sprinkler Blw Ground; Undergrnd Utilities; Views
Waterfront: Big Lost
Construction Type: Site-built (Stick)
Style: 1 Story
Specialty Rooms: Guest House
Garage: Detached
Irrigation: Center Pivot; Ditch/Flood
Items Included: All Ktchn Appliances
Exterior Finish: Wood
Roof: Metal
Documents: Aerial View; Topo Map; Well Report
Other Disclosures: Flood Plain
Terms: Cash
Supplements
The 589± acre Big Lost River Ranch is one of central Idaho's premier lifestyle, recreational, and ranching properties. Located in the upper Lost River Valley, 35± miles northeast of Ketchum/Sun Valley and 20± miles northwest of Mackay, the ranch is nearly surrounded by federal lands managed by the Bureau of Land Management (BLM) and encompasses over a mile of frontage on both banks of the Big Lost River, offering outstanding trout fishing.
Set up for year-round living, the ranch features a beautifully crafted and appointed owner's residence with two bedrooms and two and a half bathrooms. Designed with entertaining in mind, the owner's cabin is warm and inviting and highlighted by floor-to-ceiling windows that frame extraordinary views of Idaho's highest peaks. Additional building improvements include a wonderfully restored log guest cabin with a sleeping loft, a greenhouse adjacent to the owner's residence, a restored log tack shed, a horse barn, a calving shed, a shop building with adjoining equipment storage, and a set of working corrals with a scale house and cattle scale.
Originally run by the owners themselves as a year-round cow-calf operation producing high-quality branded beef, the ranch is currently leased for seasonal grazing to a local cattle rancher who emphasizes regenerative management practices. The property holds multiple irrigation rights covering up to 345 acres. The ranch's lush bottomland meadows are flood irrigated through a series of ditches, while approximately 130 acres are irrigated by a center pivot.
The ranch is a sanctuary for elk, moose, mule deer, whitetail deer, and other wildlife that utilize the Big Lost River corridor. With high-quality public lands in every direction, the ranch is an excellent base from which to explore the area's remarkable high country, with hiking, horseback riding, and ATV touring available right from the gate. In addition, the Sawtooth National Recreation Area, the Salmon River, and multiple federal wilderness areas are all within easy reach.
Listing Office: Hall & Hall Partners, LLP
Listing Agent: Trent Jones
Last Updated: August - 24 - 2026
The information being provided is for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties. This serves as notice to those using the website that they may not use the data found here as a basis for a business enterprise. Information provided by Sun Valley Board of Realtors Multiple Listing Service is deemed reliable but not guaranteed. Property of the Sun Valley Board of Realtors. Information provided by Sun Valley Board of Realtors Multiple Listing Service is deemed reliable but not guaranteed. The information on this sheet has been made available by the MLS and may not be the listing of the provider.

Big Lost River Ranch brochure with maps