Roundup Airport
RPX · KRPX · Roundup, MT · Non-towered · Print kneeboard
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:16 PM
| Event | Local (MDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 05:24 AM | 11:24Z |
| Sunrise | 05:59 AM | 11:59Z |
| Sunset | 08:41 PM | 02:41Z |
| Evening civil twilight Loggable night begins | 09:16 PM | 03:16Z |
Plan a flight from KRPX
Past 24 hours category · wind · ceiling · visibility trends
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Density altitude today projected curve · departure window · takeoff roll
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Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 16LEFT traffic
- Heading
- 157° mag · 168° true
- Dimensions
- 2,460 × 100 ft
- TPA
- 4,500 ft MSL (≈1,000 AGL) · standard
- Surface
- Turf
- CTAF
- 122.8
Enter the left downwind (heading 337°) on the 45° at 4,500 ft MSL (≈1,000 AGL).
More details — RWY 16
- Threshold elev
- 3,462 ft
- TDZ elevation
- 3,482 ft
Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 07/25 | 5,098 ft | |
| 16/34 | 2,460 ft |
Prefer one flat page? Full runway details for KRPX → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KRPX kneeboard →
Comms & NavAids
Communication frequencies
Taxi & takeoff
Also
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 305.2 | MILES CITY RCAG (LOW) |
Source: FAA NASR (current 28-day cycle).
Prefer one flat list? All KRPX frequencies →
Charts & procedures
Lowest minimums here: RNAV (GPS) with vertical guidance · VFR sectional →
Airport info
From the field
Do you run KRPX, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.
Airport information
- ICAO / IATA
- KRPX / RPX
- Coordinates
- 46.4751, -108.5415
- Elevation
- 3,490 ft MSL
- Magnetic variation
- 11E
- Sectional chart
- BILLINGS
- Airport use
- Public
- Control tower
- No
- ARTCC
- SALT LAKE CITY (ZLC)
- Flight service (FSS)
- GREAT FALLS · 122.3 · 1-800-WX-BRIEF
- NOTAM facility
- GTF
- Attendance
- UNATNDD
- Beacon
- white-green (SS-SR)
- Segmented circle
- Yes
- Wind indicator
- lighted
- Activated
- 1940/04
- Distance from city
- 2 N
Activity & hazards NASR
- Parachute jumping — to 14,500 ft MSL · SR-SS WEEKENDS
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- Usually keyed on CTAF 122.8 — confirm the click sequence in the Chart Supplement ↗
Runway lighting aids — 07: 2-light PAPI (left) · 25: 2-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- 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 2 contacts
Remarks FAA · 9 notes
General
- PHONE ON FLD.
- WILDLIFE ON & INVOF ARPT.
- FOR CD CTC BILLINGS APCH AT 406-255-2798.
Runways
- RY 25 RIGHT TFC FM 2200 TO 0700.
- RY 16/34 MKD WITH WHITE CONES FULL LENGTH; RED CONES MARK THR.
Lighting
- ACTVT MIRL RY 07/25 AND PAPI RY 07 & RY 25 - 122.7.
- ULTRALIGHTS ON & INVOF ARPT.
Fuel
- CREDIT CARD SELF SVC FUEL AVBL 24/7.
Contact
- OR 406-855-7354 CONTACT FOR SVCS
Embed KRPX weather on your site free widget for schools, clubs & FBOs
Live METAR, flight category, and favored runway for KRPX — paste this into your website's HTML. It updates automatically and stays free.
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Nearby airports
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Also nearby: 80S Lavina Airport (20 NM) · 36MT 16 Ranch Airport (private) (22 NM) · 19MT N Bar Ranch Airport (private) (27 NM) · 8U0 Ryegate Airport (31 NM) · 1MT2 Skyrider Ultralightport (private) (32 NM) · MT85 Dawsons Landing Airport (private) (33 NM)
About KRPX
Roundup Airport (RPX · KRPX) is an airport in Roundup, MT, at 3,490 ft MSL. It has 2 runways, the longest 5,098 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KRPX, refreshed from the Aviation Weather Center and FAA NASR.
Does KRPX have a control tower?
No. Roundup Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at KRPX?
Roundup Airport has 2 runways; the longest is 5,098 ft. See the Runways section for headings, surface, and lighting.
Where is KRPX?
Roundup Airport is in Roundup, MT, at an elevation of 3,490 ft MSL. Coordinates: 46.4751, -108.5415.
Fly out of KRPX often?
Save KRPX as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.
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. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.