KMRF · Marfa Municipal Airport

MARFA, TEXAS · SMALL AIRPORT

4,849

Elevation ft

Runways

6,203

Longest ft · 13/31

30.37N

104.02W

Marfa Municipal Airport serves Marfa, Texas at 4,849 ft elevation with its longest runway, 13/31, at 6,203 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
13/31	6,203 × 75 ft	asphalt	lit
04/22	5,309 × 75 ft	asphalt	unlit
09/27	2,825 × 60 ft	unknown	unlit

02Density altitude and turboprop runway margins

Standard temperature at 4,849 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)	4,849 ft	3,384 ft	2,622 ft	3,932 ft
Warm day (ISA +10)	6,049 ft	3,618 ft	2,748 ft	4,122 ft
Hot day (ISA +20)	7,249 ft	3,852 ft	2,875 ft	4,312 ft
35°C afternoon	8,413 ft	4,079 ft	2,998 ft	4,496 ft

Planning aid only. Even on a 35°C afternoon the longest runway (13/31, 6,203 ft) covers a Meridian-class turboprop's landing distance with a 50 percent margin (4,496 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 KMRF is high, or as the longer runway on a hot afternoon.

Airport	Distance	Longest runway
0TA7 Alta Vista Ranch Airport	14 nm SE	5,200 ft
KE38 Alpine Casparis Municipal Airport	17 nm E	6,002 ft
KPRS Presidio Lely International Airport	48 nm S	5,200 ft

04Jet A prices and FBOs at KMRF

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

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