Reference only — not for real-world navigation.
K1C5
Bolingbrook's Clow International Airport · Bolingbrook
Key Facts
Essential technical summary for MSFS 2020/2024 and X-Plane.
ILS Approach StatusILS DATA NOT IN DATABASE
Field Elevation
670 ft / 204 m
Transition Altitude
18,000 ft
Primary Channel
CTAF 122.90 MHz (CTAF)
Live Conversion
inHg
hPa
Runway Summary (Quick-Links)
18/36 · 3,362 ft · ASPH-GLIGHTEDFlight Planning
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Welcome to the technical flight briefing for Bolingbrook's Clow International Airport (K1C5), located in Bolingbrook, United States. As a vital hub for Microsoft Flight Simulator 2024, MSFS 2020, and X-Plane pilots, this facility features 1 active runway with a maximum elevation of 670 ft. Please note that this field primarily supports VFR and visual approach procedures.Reference the data below for primary communication channels and detailed runway characteristics. Pilots should observe a Transition Altitude of 18,000 ft verified for this field for altimeter reset procedures.
Full Name
Bolingbrook's Clow International Airport
ICAO / IATA
K1C5 / —
Municipality
Bolingbrook
Country
Region
US-IL — Illinois
GPS Coordinates
Transition Altitude
18,000 ft
Elevation
670 ft
Wikipedia
Pilot Toolbox
External charts, live tracking and weather reports.
Runway 18 / 36
LIGHTED
Runway Length: 3,362 ft / 1,025 m
Runway Width: 50 ft / 15 m
Surface Type: ASPH-G
Heading: 178° / 358°
Runway Width: 50 ft / 15 m
Surface Type: ASPH-G
Heading: 178° / 358°
RWY 18 (178°)
No ILS / Visual Only
RWY 36 (358°)
No ILS / Visual Only
A/D CHICAGO APP/DEP
119.35 MHz
CTAF CTAF
122.90 MHz
Base Airport Data: OurAirports (Public Domain)
Instrument Approach Data: AIP 2026 Researched · Cycle: Jan 2026