Kelgun Airport

4CO8 · Castle Rock, CO · 6,800 ft elevation

Overview Weather Runways Comms & NavAids Charts Services & info

Airport information

FAA LID: 4CO8
Coordinates: 39.3069, -104.8160
Elevation: 6,800 ft MSL

Detailed FAA facility data isn't available for this airport.

Weather

METAR observed

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TAF forecast

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Sun & FAA night 2026-06-21

Event	Local (MDT)	UTC
Morning civil twilight Loggable night ends	05:00 AM	11:00Z
Sunrise	05:33 AM	11:33Z
Sunset	08:29 PM	02:29Z
Evening civil twilight Loggable night begins	09:02 PM	03:02Z

Loggable night (§1.1)

09:02 PM → 05:00 AM

Night currency (§61.57)

09:29 PM → 04:33 AM

Plan a flight from 4CO8

Destination (ICAO)

TAS (kt)Burn (gph)Reserve (hr)Wind from (°)Wind (kt)

Traffic pattern

Landing runway

LEFT traffic

Landing: Rwy 01
Pattern: left (turns left)
TPA: 7,800 ft MSL (≈1,000 AGL)

Enter the left downwind for Rwy 01 at 7,800 ft MSL (≈1,000 AGL) on a 45°. TPA estimated at 1,000 ft AGL (not charted for this field).

Runway 01/19

1,400 ft × 50 ft · TURF-G

Heading: n/a

Heading: n/a

Headings shown are true (magnetic variation unavailable).

Will it fit? Your aircraft's required runway length (from the POH) — checked against every runway here

ft · ≥1.5× comfortable, under 1.25× tight · saved across airports

Runway	Length	Your margin
01/19	1,400 ft

Nearby navigation aids

NavAid	Type	Freq	Radial / Dist magnetic
BRK · Black Forest	VORTAC	112.50	r326° / 23.4 NM
BKF · Buckley	TACAN	109.60	r175° / 24.2 NM
FQF · Falcon	VORTAC	116.30	r191° / 24.7 NM
DEN · Denver	VOR-DME	117.90	r182° / 31.2 NM
DVV · Mile High	VORTAC	114.70	r183° / 36.4 NM
FCS · Butts	VOR-DME	108.80	r344° / 37.7 NM
BJC · Jeffco	VOR-DME	115.40	r147° / 39.3 NM

VFR sectional

Open 4CO8 on the VFR sectional (SkyVector) ↗

No published instrument procedures or Chart Supplement for 4CO8. VFR sectional link above.

No published services or facility detail for 4CO8.

Nearby airports

CO99 · Triple P Ranch AirportPrivate (3 NM)CO93 · Perry Park AirportPrivate (5 NM)CO96 · Reed Hollow Ranch AirportPrivate (5 NM)4CO7 · Ambrosich FieldPrivate (8 NM)8CD4 · Basin FieldPrivate (9 NM)CO15 · Kelly Air ParkPrivate (10 NM)

Weather is live from the Aviation Weather Center; airport facility data is from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources. Open 4CO8 in a full tool: METAR/TAF decoder, crosswind calculator, sun & night times, or the density altitude calculator. Planning from here? Find the nearest airport with fuel or an approach, or check whether an IFR alternate is required.

About 4CO8

Kelgun Airport (4CO8) is an airport in Castle Rock, CO, at 6,800 ft MSL. It has 1 runway, the longest 1,400 ft. This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for 4CO8, refreshed from the Aviation Weather Center and FAA NASR.

What is the longest runway at 4CO8?

Kelgun Airport has 1 runway; the longest is 1,400 ft. See the Runways tab for headings, surface, and lighting.

Where is 4CO8?

Kelgun Airport is in Castle Rock, CO, at an elevation of 6,800 ft MSL. Coordinates: 39.3069, -104.8160.

Fly out of 4CO8 often?

Save 4CO8 as your home base in the SkyReady app for a one-tap Go/No-Go readiness brief, weather alerts, and automatic FAA currency — free to log.

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