KHRF · Ravalli County Airport

HAMILTON, MONTANA · SMALL AIRPORT

3,642

Elevation ft

Runway

5,200

Longest ft · 17/35

46.25N

114.13W

Ravalli County Airport serves Hamilton, Montana at 3,642 ft elevation with its longest runway, 17/35, at 5,200 by 75 ft. The figures below are computed from FAA NASR runway data (via OurAirports) and the same rules of thumb JetDesk uses on the airport page in the app; the POH and current NOTAMs are the authority.

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01Runways

Runway	Length × width	Surface	Lighting
17/35	5,200 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 3,642 ft is about 8°C. Every 1,000 ft of density altitude adds roughly 8 percent to a turboprop's takeoff distance and 5 percent to its landing distance. The table uses Piper Meridian book numbers (2,438 ft takeoff and 2,110 ft landing over a 50 ft obstacle at sea level, ISA, max weight) as a reference airplane; heavier turboprops and light jets scale the same way from their own POH figures.

Conditions	Density altitude	Takeoff est.	Landing est.	Landing × 1.5
Standard day (ISA, 8°C)	3,642 ft	3,148 ft	2,494 ft	3,741 ft
Warm day (ISA +10)	4,842 ft	3,382 ft	2,621 ft	3,931 ft
Hot day (ISA +20)	6,042 ft	3,616 ft	2,747 ft	4,121 ft
35°C afternoon	6,916 ft	3,787 ft	2,840 ft	4,259 ft

Planning aid only. Even on a 35°C afternoon the longest runway (17/35, 5,200 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,259 ft needed). The percentages are a generic rule of thumb applied to one reference airplane, not certified performance data for any specific aircraft, and the runway size categories describe the runway, not your airplane's suitability. Verify with the approved flight manual before every flight.

03Nearby fields with 5,000 ft or more

Useful as alternates, as fuel stops when the price at KHRF is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KMSO Missoula Montana Airport	40 nm N	9,501 ft
K3U3 Bowman Field	53 nm E	6,011 ft
K38S Deer Lodge City County Airport	57 nm E	5,800 ft
KSMN Lemhi County Airport	69 nm S	5,510 ft
KBTM Bert Mooney Airport	70 nm E	9,000 ft
KGIC Idaho County Airport	85 nm W	5,100 ft

04Jet A prices and FBOs at KHRF

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KHRF, the app flags a price stale after two weeks, and the route finder ranks every field within a corridor of your route by net savings after the cost of the extra cycle. Log a price at KHRF or read what a fuel stop actually saves.

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