KLLJ · Challis Airport

CHALLIS, IDAHO · SMALL AIRPORT

5,072

Elevation ft

Runway

4,601

Longest ft · 17/35

44.52N

114.22W

Challis Airport serves Challis, Idaho at 5,072 ft elevation with its longest runway, 17/35, at 4,601 by 60 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	4,601 × 60 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 5,072 ft is about 5°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, 5°C)	5,072 ft	3,427 ft	2,645 ft	3,968 ft
Warm day (ISA +10)	6,272 ft	3,661 ft	2,772 ft	4,158 ft
Hot day (ISA +20)	7,472 ft	3,895 ft	2,898 ft	4,347 ft
35°C afternoon	8,689 ft	4,133 ft	3,027 ft	4,540 ft

Planning aid only. Even on a 35°C afternoon the longest runway (17/35, 4,601 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,540 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 KLLJ is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KSMN Lemhi County Airport	39 nm N	5,510 ft
KSUN Friedman Memorial Airport	61 nm S	7,550 ft
4U9 Hyak Airbase	65 nm E	7,002 ft
KMYL McCall Municipal Airport	83 nm W	6,101 ft
KDLN Dillon Airport	83 nm NE	6,501 ft

04Jet A prices and FBOs at KLLJ

No public API publishes FBO fuel prices, so JetDesk does not guess. Pilots and crews log the price they actually paid at KLLJ, 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 KLLJ or read what a fuel stop actually saves.

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