KRXE · Rexburg Madison County Airport

REXBURG, IDAHO · SMALL AIRPORT

4,858

Elevation ft

Runway

4,204

Longest ft · 17/35

43.83N

111.81W

Rexburg Madison County Airport serves Rexburg, Idaho at 4,858 ft elevation with its longest runway, 17/35, at 4,204 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.

Open KRXE in JetDesk: live METAR, TAF, winds and runway verdict →

01Runways

Runway	Length × width	Surface	Lighting
17/35	4,204 × 75 ft	asphalt	lit

02Density altitude and turboprop runway margins

Standard temperature at 4,858 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)	4,858 ft	3,386 ft	2,623 ft	3,934 ft
Warm day (ISA +10)	6,058 ft	3,620 ft	2,749 ft	4,124 ft
Hot day (ISA +20)	7,258 ft	3,854 ft	2,876 ft	4,314 ft
35°C afternoon	8,424 ft	4,081 ft	2,999 ft	4,498 ft

Planning aid only. On a 35°C afternoon the longest runway (17/35, 4,204 ft) is within 20 percent of the 1.5x landing figure for a Meridian-class turboprop (4,498 ft). Plan hot-day departures for the morning and check the POH. 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 KRXE is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
KIDA Idaho Falls Regional Airport	22 nm SW	9,002 ft
KDIJ Driggs/Reed Memorial Airport	31 nm E	7,301 ft
KJAC Jackson Hole Airport	48 nm E	6,300 ft
KWYS Yellowstone Airport	59 nm NE	8,400 ft
KPIH Pocatello Regional Airport	65 nm SW	9,059 ft

04Jet A prices and FBOs at KRXE

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

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