Union County Airport
MRT · KMRT · Marysville, OH · Non-towered · Print kneeboard
Nearby now
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Weather
METAR observed
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TAF forecast
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Sun & FAA night2026-08-04 · night begins 09:15 PM
| Event | Local (EDT) | UTC |
|---|---|---|
| Morning civil twilight Loggable night ends | 06:04 AM | 10:04Z |
| Sunrise | 06:34 AM | 10:34Z |
| Sunset | 08:45 PM | 00:45Z |
| Evening civil twilight Loggable night begins | 09:15 PM | 01:15Z |
Plan a flight from KMRT
Past 24 hours category · wind · ceiling · visibility trends
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Density altitude today projected curve · departure window · takeoff roll
Winds aloft NOAA forecast · 3,000 to 53,000 ft
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Advisories
NOTAMs
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Pilot reports
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Airspace hazards
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Runways
RWY 27LEFT traffic
- Heading
- 268° mag · 263° true
- Dimensions
- 4,218 × 75 ft
- TPA
- 2,000 ft MSL (≈1,000 AGL) · standard
- Surface
- Asphalt
- Lights
- 4-light PAPI (left) (3°)
- Displaced thr
- 123 ft
- CTAF
- 123.05
Enter the left downwind (heading 088°) on the 45° at 2,000 ft MSL (≈1,000 AGL).
More details — RWY 27
- Threshold elev
- 997 ft
- Markings
- nonprecision
- Approach obstacle
- Rr, 20 ft, 425 ft from threshold, 260 ft R of centerline — 11:1 slope to clear · penetrates the 20:1 visual approach surface
- Threshold crossing height
- 33 ft
- TDZ elevation
- 1,015 ft
- End lights
- REIL
Pattern side + displaced threshold: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates
| Runway | Length | Your margin |
|---|---|---|
| 09/27 | 4,218 ft |
Prefer one flat page? Full runway details for KMRT → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KMRT kneeboard →
Comms & NavAids
Communication frequencies
Before taxi
Taxi & takeoff
Departure & arrival
“Columbus”ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).
By procedure & sector (1 frequencies)
| Frequency | Used by |
|---|---|
| 317.775 | APCH/P DEP/P IC |
Source: FAA NASR (current 28-day cycle).
Nearby navigation aids
BUD 109.80 · ROD 117.50 · XSF 133.80 · +1
| NavAid | Type | Freq · ch | Range | Radial / Dist magnetic |
|---|---|---|---|---|
| BUD · Buckeye | VOR | 109.80 | Terminal | r214° / 27 NM |
| ROD · Rosewood | VORTAC | 117.50 · 122X | High | r102° / 31.9 NM |
| XSF · Springfield | TACAN | 133.80 · 65X | — | r048° / 32.3 NM |
| APE · Appleton | VORTAC | 116.70 · 114X | High | r283° / 35.3 NM |
Prefer one flat list? All KMRT frequencies →
Charts & procedures
Lowest minimums here: RNAV (GPS) with vertical guidance · VFR sectional →
Airport info
From the field
Do you run KMRT, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.
Airport information
- ICAO / IATA
- KMRT
- Coordinates
- 40.2247, -83.3516
- Elevation
- 1,021 ft MSL
- Magnetic variation
- 5W
- Sectional chart
- DETROIT
- Airport use
- Public
- Control tower
- No
- Weather station
- AWOS-3PT · 126.5 · ☎ 937-553-0033
- ARTCC
- INDIANAPOLIS (ZID)
- Flight service (FSS)
- DAYTON · 122.1R · 1-800-WX-BRIEF
- NOTAM facility
- MRT
- Attendance
- ALL 0800-1700
- Beacon
- white-green (SS-SR)
- Segmented circle
- No
- Wind indicator
- lighted
- Activated
- 1967/07
- Distance from city
- 1 SE
Night operations
- Airport lighting
- SEE RMK
- Rotating beacon
- white-green · SS-SR
- Pilot-controlled lighting
- ACTVT REIL RWY 09 & 27; PAPI RWY 09 & 27; MIRL RWY 09/27 - CTAF. on 123.05 — Chart Supplement ↗
Runway lighting aids — 09: 4-light PAPI (left) · 27: 4-light PAPI (left).
FAA night windows (civil twilight, loggable night §1.1, currency §61.57) are under Sun & FAA night in the Weather section.
Services fuel · repairs · oxygen · attendance
- Fuel available
- 100LL, Jet A-1, Jet A-1 (additive)
- Bottled oxygen
- NONE
- Bulk oxygen
- NONE
- Airframe service
- MAJOR
- Powerplant service
- MAJOR
- Parking
- tiedowns, hangars
- Other services
- Instruction, Rental
Ownership & management 2 contacts
Remarks FAA · 11 notes
General
- DEER, BIRDS, & OTR WILDLIFE ON & INVOF ARPT.
- FOR CD CTC COLUMBUS APCH AT 614-338-8537.
Runways
- CK NOTAMS FOR STS OF AEROBATIC BOX SOUTH OF RWY 09/27 & 08/26 - RP RWY 27 & 26 WHEN ACTV.
- CALM WIND RWY.
- THR & EDGES MKD WITH CONES.
- THR & EDGES MKD WITH CONES.
Lighting
- ACTVT REIL RWY 09 & 27; PAPI RWY 09 & 27; MIRL RWY 09/27 - CTAF.
Fuel
- FUEL AVBL H24 SELF SVC VIA CREDIT CARD.
Obstructions
- APCH RATIO 27:1 TO DTHR DUE TO +20 FT RR, 425 FT DIST, 260 FT R.
Contact
- SKYVISTAAVIATION@GMAIL.COM.
- AFT HRS & EMERG 937-741-3120.
Embed KMRT weather on your site free widget for schools, clubs & FBOs
Live METAR, flight category, and favored runway for KMRT — paste this into your website's HTML. It updates automatically and stays free.
More widgets — crosswind, E6B, density altitude — on the embed page.
Nearby airports
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Also nearby: 2OA5 Fl-Airfield (private) (3 NM) · OH93 Darby Airport (private) (5 NM) · 82OI J-Em Farm Airport (6 NM) · OA51 Fighter Field Airport (6 NM) · 6OI5 Mitchell Airport (8 NM) · 33OH Sunset Strip (8 NM)
About KMRT
Union County Airport (MRT · KMRT) is an airport in Marysville, OH, at 1,021 ft MSL. It has 1 runway, the longest 4,218 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KMRT, refreshed from the Aviation Weather Center and FAA NASR.
Does KMRT have a control tower?
No. Union County Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.
What is the longest runway at KMRT?
Union County Airport has 1 runway; the longest is 4,218 ft. See the Runways section for headings, surface, and lighting.
Where is KMRT?
Union County Airport is in Marysville, OH, at an elevation of 1,021 ft MSL. Coordinates: 40.2247, -83.3516.
Fly out of KMRT often?
Save KMRT 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.
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 KMRT 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.