Roundup Airport

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Location

Latitude: 
 46-28-30.0000N (46.475)
Longitude: 
 108-32-36.3000W (-108.543417)
Elevation: 
 3490.3 feet MSL (1064 m MSL)
Magnetic Variation: 
 10.2 E (as of December 2025 from WMM2020 model)
Time Zone: 
 UTC -7.0 (Standard Time)
UTC -6.0 (Daylight Savings Time)
From City: 
 02 N.M. N of Roundup, Montana
Found On: 
 Billings Chart
FAA Region: 
 ANM

Contacts

Manager: 
Publicly owned: 
KELLY GEBHARDT
20 SKYLINE DRIVE
ROUNDUP, MT 59072
406-323-1564		 ROUNDUP & MUSSELSHELL COUNTY
506 MAIN ST
ROUNDUP, MT 59072
406-323-1104

Operations

Airport Status: 
 Operational
Facility Use: 
 Public
Type: 
 Airport
Activation Date: 
 04/1940
Control tower: 
 No
Attendance (Months/Days/Hours): 
 Months/Days/Hours
Unattended
Boundary ARTCC: 
 ZLC (Salt Lake City)
Responsible ARTCC: 
 ZLC (Salt Lake City)
Lighting Schedule: 
 SEE RMK
Segmented Circle Indicator: 
 Yes
Traffic Pattern Altitude (MSL): 
 4490 feet (1369 m)
NOTAMs Facility: 
 GTF
NOTAM-D Service: 
 Yes
International Airport of Entry: 
 No
Customs Landing Rights: 
 No
Military Landing Rights: 
 Yes
Civil/Military Joint Use: 
 No

Based Aircraft

Annual Operations (as of )

Communications

CTAF:  122.800
Unicom:  122.800

  • APCH/DEP CTL SVC PRVDD BY SALT LAKE ARTCC (ZLC) ON 126.85/305.2 (MILES CITY RCAG).
   

Fixed Based Operators (FBOs) & Fuel

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Area Code: 406
Business Name Frequency Phone Fuel Grade
Moore Quality Flying Service
  
323-1011 100LL
To add, modify, or delete a business
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Flight Service Stations

Primary Alternate
FSS on Field:  N
FSS Name (ID):  Great Falls(GTF)
Frequency: 
Toll Free Phone:  1-800-WX-BRIEF

Instrument Procedures / Charts


FAA Terminal Procedures valid from 0901Z 11/27/25 to 0901Z 12/25/25.

There are various types of charts available for an airport. They are listed in the Page Type column. Here is a legend for those types:

APD - Airport Diagram
DP - Departure Procedure Charts
HOT - Hot Spots
IAP - Instrument Approach Procedure Charts
MIN - Minimums
STAR - Standard Terminal Arrival Charts
Page Type Page Name Volume Action Since
Last Cycle
IAP RNAV (GPS) RWY 07 NW-1
IAP RNAV (GPS) RWY 25 NW-1
MIN TAKEOFF MINIMUMS NW-1
Terminal Procedures are only available for airports in several countries with more being added all the time. If you are looking for a specific country's charts, please send an email to support(at)airportguide.com stating the country name. This will be used to prioritize the implementation.

Navigation Aids (Navaids) near RPX

Navigational Aid (NAVAID) distances from the airport are listed in Nautical Miles (NM).

Nearby Airports with Fuel

Dist (NM) Name (Airport IDs) True Hdg Mag Hdg Fuel Grade
40.0 Billings Logan International Airport
(BIL KBIL BIL)		 180 170 100LL, Jet A
47.1 Laurel Municipal Airport
(6S8)		 191 181 100LL, Jet A
51.3 Lewistown Municipal Airport
(LWT KLWT LWT)		 312 301 100, 100LL, Jet A
58.4 Woltermann Meml Airport
(6S3)		 210 200 100LL
71.9 Big Timber At Howard Field Airport
(6S0)		 236 225 100LL, Jet A
80.1 Stanford/Biggerstaff Field Airport
(S64)		 300 289 100LL
80.4 Tillitt Field Airport
(1S3)		 98 89 100LL
83.0 Red Lodge Airport
(KRED RED)		 201 191 100LL
91.9 Mission Field Airport
(LVM KLVM LVM)		 240 229 100LL, Jet A
93.9 North Big Horn County Airport
(U68)		 177 167 100LL
97.0 Powell Municipal Airport
(POY KPOY POY)		 186 176 100LL, Jet A
97.9 White Sulphur Springs Airport
(7S6)		 271 260 100LL

Notices to Airmen (NOTAMS)

NOTAMs

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NOTAMS within

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NM of KRPX

NOTAM Flight Path Search (Enter from two to five locations below)

NOTAMS within

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This field is required
NM of KRPX

Remarks

A110-1 PHONE ON FLD.
A110-4 WILDLIFE ON & INVOF ARPT.
A110-5 FOR CD CTC BILLINGS APCH AT 406-255-2798.
A16 OR 406-855-7354 CONTACT FOR SVCS
A23-25 RY 25 RIGHT TFC FM 2200 TO 0700.
A42-16 RY 16/34 MKD WITH WHITE CONES FULL LENGTH; RED CONES MARK THR.
A70-FUEL-10 0LL CREDIT CARD SELF SVC FUEL AVBL 24/7.
A81-APT ACTVT MIRL RY 07/25 AND PAPI RY 07 & RY 25 - 122.7.
A96 ULTRALIGHTS ON & INVOF ARPT.

Runways

Runway Summary

Runways: 07/25
16/34
Longest Runway: 07/25 is 5099 ft (1554 m) long
Runways with an Instrument Approach:

RPX Airport Runway Details

Runway 07/25  5099 ft x 75 ft (1554 m x 23 m)
Runway Length Source:  3RD PARTY SURVEY as of 11/28/2012
Surface:  Asphalt - Excellent condition - No special surface treatment
Runway Edge Lights:  Medium Intensity

Runway Weight Bearing Capacity (in thousands of pounds) 
Single Wheel Landing Gear:  12.5

Runway 07

Runway 25
Elevation: 
 3490.3 3430.8
Latitude: 
 46-28-24.9658N 46-28-35.6501N
Longitude: 
 108-33-04.9018W 108-31-53.7271W
Runway True Alignment: 
 078 258
Glide Path Angle: 
 4.0 degrees 3.0 degrees
Traffic Pattern: 
 Left
Runway Markings Type: 
 Nonprecision Instrument Nonprecision Instrument
Runway Markings Condition:
Good Good
Object at End: 
 GND
Object Height: 
 17
Distance from End: 
 700
Object Centerline Offset: 
 0 ft. left and right of centerline
Visual Glide Slope Indicators: 
 2-Light PAPI On Left Side Of Runway 2-Light PAPI On Left Side Of Runway
Threshold Crossing Height: 
 43 42

Runway 16/34  2460 ft x 100 ft (750 m x 30 m)
Runway Length Source:  3RD PARTY SURVEY as of 11/28/2012
Surface:  Asphalt - Excellent condition - No special surface treatment

Runway 16

Runway 34
Elevation: 
 3462.2 3482.3
Latitude: 
 46-28-41.2142N 46-28-17.4939N
Longitude: 
 108-32-54.2997W 108-32-46.8273W
Runway True Alignment: 
 168 348
Glide Path Angle: 
 0.0 degrees 0.0 degrees
Object Centerline Offset: 
 0 ft. left and right of centerline

Services

Bottled Oxygen: 
 None
Bulk Oxygen: 
 None
Fuel Available: 
 100LL
Landing Fees: 
 No
Parking: 
 Tiedowns available

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