Skip to content
Vincony — fast, managed web hosting for your next site
The Pilots Desk
Small airport

South Boulder Airport

ICAO 2MT8🇺🇸 Cardwell
Coordinates
45.8151°N, 111.9259°W
Elevation
4,560 ft (1,390 m)
Type
Small airport
Country
🇺🇸 United States
Region
US-MT
Time zone
Denver(UTC-06:00)
Magnetic variation
11.5° E

Daylight today(Jul 16, 2026, local time)

Civil dawn
05:17
Sunrise
05:54
Sunset
21:15
Civil dusk
21:51

About 15h 21m of daylight. Civil twilight (dawn/dusk) approximates the FAA definition of night for logging and currency. Times are computed and approximate — verify with official sources.

About South Boulder Airport

South Boulder Airport is a small airport in Cardwell, United States. It sits at an elevation of 4,560 ft (1,390 m) and has 1 runway, the longest 3,000 ft / 914 m. It observes America/Denver local time. The nearest airport is Jefco Skypark Airport (MT41), about 8.8 nm to the wnw.

Summary generated from this airport’s structured data — reference only.

Map

Runway centrelines, navaids and overlapping airspace. Tiles © OpenStreetMap contributors. Reference only — not for navigation.

Runways (1)

RunwayLengthWidthSurfaceLightingStatus
18 / 363,000 ft / 914 m100 ftTurfUnlitOpen

Nearby airports

Jefco Skypark AirportMT41
8.8 nm WNW (295°)
Harrison AirportUS-4192
9.6 nm SE (138°)
Ottertail Lake AirportUS-1274
9.6 nm E (89°)
Three Forks AirportK9S5
15.4 nm ENE (76°)
Hasskamp STOLportMT42
18.1 nm ENE (71°)
Jefferson River AirportUS-1000
20.9 nm SW (234°)

Great-circle distance and true bearing from South Boulder Airport.

Live tracking (FR24) Open in Maps
🇺🇸 More airports in United States📘 Flying in the United States: a pilot's guide

Frequently asked questions

Where is South Boulder Airport located?

South Boulder Airport is small airport located in Cardwell, United States, at an elevation of 4,560 ft (1,390 m).

How many runways does South Boulder Airport have?

South Boulder Airport has 1 runway, the longest being 3,000 ft / 914 m.

What time zone is South Boulder Airport in?

South Boulder Airport is in the America/Denver time zone (UTC-06:00).

What is the magnetic variation at South Boulder Airport?

The magnetic variation (declination) at South Boulder Airport is approximately 11.5° E, per the World Magnetic Model. Variation changes slowly over time — always use the current value charted for navigation.

What airports are near South Boulder Airport?

The nearest airport to South Boulder Airport is Jefco Skypark Airport (MT41), about 8.8 nm to the wnw, followed by Harrison Airport and Ottertail Lake Airport.

Is the information on this page suitable for flight planning?

No. South Boulder Airport data here is for reference and training only — not for navigation. Always consult official sources and current charts before any flight.