Roundup, Montana
KRPX Roundup
Roundup (KRPX) is a non-towered, public-use airport in Roundup, Montana, at 3,490.3 ft MSL. It has 2 runways: 07/25 (5,099 by 75 ft, asphalt), 16/34 (2,460 by 100 ft, turf). CTAF 122.8.
FAA NASR data effective Oct 29, 2026. Not for navigation; verify with current FAA charts and the Chart Supplement.
Airport
At a glance
- Identifiers
- ICAO KRPX, FAA RPX
- Location
- Roundup, Montana (Musselshell County). 2 NM N of the city center
- Elevation
- 3,490.3 ft MSL
- Position
- 46.4750° N, 108.5434° W
- Control tower
- No, non-towered
- Sectional chart
- Billings
- Magnetic variation
- 11° E (2015)
- Fuel
- 100LL, Jet A-1
- Ownership
- Publicly owned, open to the public
- Attendance
- Unattended
2 runways
Runways
| Runway | Length × width | Surface | Edge lights |
|---|---|---|---|
| 07/25 | 5,099 × 75 ft | Asphalt, excellent condition | Medium intensity |
| 16/34 | 2,460 × 100 ft | Turf, good condition | Not listed |
Runway ends and traffic pattern
| End | Pattern | Glide slope lights | Instrument | Displaced threshold | Landing distance |
|---|---|---|---|---|---|
| 07 | Not stated | 2-light PAPI, left | None listed | None listed | Not listed |
| 25 | Left traffic | 2-light PAPI, left | None listed | None listed | Not listed |
| 16 | Not stated | None listed | None listed | None listed | Not listed |
| 34 | Not stated | None listed | None listed | None listed | Not listed |
VHF
Frequencies
- CTAF
- 122.8
- UNICOM
- 122.8
Before you go
Brief KRPX in Ascent EFB.
Current weather, NOTAMs and the airport diagram for Roundup, in the app on iPhone and iPad.
Not for navigation. Verify with current FAA charts and the Chart Supplement before flight.
Source: FAA NASR 28-day subscription, cycle effective Oct 29, 2026. Airport data changes every 28 days and NOTAMs can override it at any time.