# Roundup Airport (RPX / KRPX)

**Roundup Airport** (IATA: RPX, ICAO: KRPX) is a small airport in Roundup, Montana, United States. It opened in Apr 1940. It has 2 runways; the longest is 5,099 ft (1,554 m).

Web page: https://dromopedia.com/airports/krpx

## At a glance

- IATA / ICAO: RPX / KRPX
- FAA: RPX
- Type: Small airport
- Serves: Roundup, Montana, United States
- Opened: Apr 1940
- Elevation: 3,490 ft / 1,064 m
- Coordinates: 46.4751, -108.5415
- Runways: 2
- Longest runway: 5,099 ft / 1,554 m
- Instrument procedures: 2 approaches
- Time zone: UTC-7/-6 · America/Denver
- Wikipedia: https://en.wikipedia.org/wiki/Roundup_Airport (5 languages)
- Wikidata: https://www.wikidata.org/wiki/Q7371276
- Weather station: KRPX
- Ident: KRPX

## Timeline

- Apr 1940: Roundup Airport opens.

## Runways

| Ident | Length | Width | Surface | True headings | Lighted |
| --- | --- | --- | --- | --- | --- |
| 07/25 | 5,099 ft / 1,554 m | 75 ft / 23 m | Asphalt | 078° / 258° | yes |
| 16/34 | 2,460 ft / 750 m | 100 ft / 31 m | Grass | 168° / 348° |  |

- 07/25 slopes 1.2%: threshold 25 at 3,431 ft / 1,046 m, threshold 07 at 3,490 ft / 1,064 m.

## Rankings

Ranked among 48,075 open airports; = marks a shared place.

| Measure | Value | World | Region | Country |
| --- | --- | --- | --- | --- |
| Longest runway | 5,099 ft / 1,554 m | =6,152 of 29,858 | =2,077 in North America | =1,688 in US |
| Elevation | 3,490 ft / 1,064 m | =4,389 of 43,403 | =2,285 in North America | =1,786 in US |
| Age | Opened 1940 | =1,114 of 15,079 | =366 in North America | =338 in US |
| Runways | 2 | =715 of 29,978 | =435 in North America | =391 in US |

## Radio frequencies

| Type | Description | MHz |
| --- | --- | --- |
| UNIC | CTAF/UNICOM | 122.800 |

## Nearby airports

- [80S](https://dromopedia.com/airports/80s.md) Lavina Airport · 23 mi / 37 km
- [36MT](https://dromopedia.com/airports/36mt.md) 16 Ranch Airport · 26 mi / 42 km
- [19MT](https://dromopedia.com/airports/19mt.md) N Bar Ranch Airport · 31 mi / 50 km
- [7S2](https://dromopedia.com/airports/us-4841.md) Winnett Airport · 36 mi / 58 km
- [8U0](https://dromopedia.com/airports/8u0.md) Ryegate Airport · 36 mi / 58 km
- [1MT2](https://dromopedia.com/airports/1mt2.md) Skyrider Ultralightport · 37 mi / 59 km

## Sources

- [FAA NASR](https://www.faa.gov/air_traffic/flight_info/aeronav/aero_data/NASR_Subscription/): US airport data: FAA National Airspace System Resources (Public Domain (US Government))
- [NOAA Aviation Weather Center](https://aviationweather.gov/data/api/): Weather data: NOAA Aviation Weather Center (Public Domain (US Government))
- [OurAirports](https://ourairports.com/data/): Airport data from OurAirports (Public Domain)
- [Wikidata](https://www.wikidata.org): Structured data from Wikidata (CC0 1.0)
- [timezone-boundary-builder](https://github.com/evansiroky/timezone-boundary-builder): Time zone boundaries © OpenStreetMap contributors, timezone-boundary-builder (ODbL 1.0)
- Every figure with its source: https://dromopedia.com/airports/krpx/data