Airport information
- ICAO / IATA
- KRPX / RPX
- Coordinates
- 46.4751, -108.5415
- Elevation
- 3,500 ft MSL
- Magnetic variation
- 11E
- Sectional chart
- BILLINGS
- Airport use
- Public
- Control tower
- Yes
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS
- NOTAM facility
- GTF
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1940/04
- Distance from city
- 2 N
Weather
METAR observed
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TAF forecast
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Sun & FAA night 2026-06-20
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 04:42 AM | 10:42Z |
| Sunrise | 05:21 AM | 11:21Z |
| Sunset | 09:10 PM | 03:10Z |
| Evening civil twilight Loggable night begins | 09:50 PM | 03:50Z |
Loggable night (§1.1)
09:50 PM → 04:42 AM
Night currency (§61.57)
10:10 PM → 04:21 AM
Plan a flight from KRPX
Runway 07/25
5,098 ft × 75 ft · Asphalt (Excellent) 07
- Heading
- 067° mag · 78° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (4°)
- Traffic pattern
- Left
25
- Heading
- 247° mag · 258° true
- Markings
- nonprecision
- VGSI
- 2-light PAPI (left) (3°)
- Traffic pattern
- Left
Runway 16/34
2,460 ft × 100 ft · Turf (Good) 16
- Heading
- 157° mag · 168° true
- Traffic pattern
- Left
34
- Heading
- 337° mag · 348° true
- Traffic pattern
- Left
Communication frequencies
| Service | Frequency | Notes |
|---|---|---|
| UNIC | 122.8 | CTAF/UNICOM |
Approaches
- RNAV (GPS) RWY 07 ↗ · amdt 0B
- RNAV (GPS) RWY 25 ↗ · amdt 0C
Minimums & Hot Spots
Chart Supplement FAA A/FD
Open PDF ↗Preview Chart Supplement
VFR sectional
Services
- Fuel available
- 100LL, Jet A-1
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Agricultural, Charter, Instruction, Parachute ops, Rental, Survey
Ownership & management
Owner
ROUNDUP & MUSSELSHELL COUNTY
506 MAIN ST, ROUNDUP, MT
406-323-1104
Manager
KELLY GEBHARDT
20 SKYLINE DRIVE, ROUNDUP, MT
406-323-1564
Remarks FAA
- PHONE ON FLD.
- WILDLIFE ON & INVOF ARPT.
- FOR CD CTC BILLINGS APCH AT 406-255-2798.
- ACTVT MIRL RY 07/25 AND PAPI RY 07 & RY 25 - 122.7.
- ULTRALIGHTS ON & INVOF ARPT.
- OR 406-855-7354 CONTACT FOR SVCS
- CREDIT CARD SELF SVC FUEL AVBL 24/7.
- RY 25 RIGHT TFC FM 2200 TO 0700.
- RY 16/34 MKD WITH WHITE CONES FULL LENGTH; RED CONES MARK THR.
Nearby airports
Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open KRPX in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator.