Tri-County Regional Airport

LNR · KLNR · Spring Green, WI · Non-towered · Print kneeboard

Elevation

717 ft MSL

Longest runway

5,000 ft 09/27

Runways

Mag var

AWOS 119.425 CTAF 123.0 Approach 135.45

Nearby now

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Weather

METAR observed

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TAF forecast

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Sun & FAA night2026-08-03 · night begins 08:52 PM

Event	Local (CDT)	UTC
Morning civil twilight Loggable night ends	05:21 AM	10:21Z
Sunrise	05:53 AM	10:53Z
Sunset	08:20 PM	01:20Z
Evening civil twilight Loggable night begins	08:52 PM	01:52Z

Loggable night (§1.1)

08:52 PM → 05:21 AM

Night currency (§61.57)

09:20 PM → 04:53 AM

Plan a flight from KLNR

Destination

TAS (kt)Burn (gph)Reserve (hr)Cruise (ft)Max alt (ft)Wind from (°)Wind (kt)

Past 24 hours category · wind · ceiling · visibility trends

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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 18LEFT traffic

Heading: 180° mag · 180° true
Dimensions: 1,850 × 60 ft
TPA: 1,700 ft MSL (≈1,000 AGL) · standard
Surface: Asphalt
CTAF: 123.0

Enter the left downwind (heading 000°) on the 45° at 1,700 ft MSL (≈1,000 AGL).

More details — RWY 18

Threshold elev: 715 ft
Markings: basic
Approach obstacle: Trees, 375 ft, 5,000 ft from threshold, 530 ft R of centerline — 12:1 slope to clear · penetrates the 20:1 visual approach surface
TDZ elevation: 716 ft

Condition: Good. Edge lights: Med. Weight bearing: Single wheel 12.5k.

Pattern side: FAA NASR · TPA standard 1,000 ft AGL (not charted) · layout: FAA runway-end coordinates

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
09/27	5,000 ft
18/36	1,850 ft

Prefer one flat page? Full runway details for KLNR → · New to pattern entries? The 45° entry, explained → · Teaching here? Print the KLNR kneeboard →

Comms & NavAids

Communication frequencies

Before taxi

“Lone Rock”

ASOS/AWOS

119.425

Taxi & takeoff

“Lone Rock”

CTAF

123.0

UNICOM

123.0

Departure & arrival

“Madison”

App/Dep

135.45

Also

Flight service

122.3 133.3 LOW

ATC assigns the exact frequency (in your clearance or on handoff) — which one depends on your SID (departing) or STAR (arriving).

By procedure & sector (3 frequencies)

Frequency	Used by
116.05/107Y	LNR DME
257.925	LONE ROCK RCAG (LOW)
343.7	APCH/P DEP/P

Source: FAA NASR (current 28-day cycle).

Instrument landing systems

RWY 27

Runway	ILS
RWY 27	LOC/DME · LOC 108.35 (LNR)

Source: FAA NASR (current 28-day cycle).

Nearby navigation aids

DLL 117.00 · MSN 108.60

NavAid	Type	Freq · ch	Range	Radial / Dist magnetic
DLL · Dells	VORTAC	117.00 · 117X	High	r219° / 27.4 NM
MSN · Madison	VORTAC	108.60 · 23X	Low	r273° / 37.1 NM

Prefer one flat list? All KLNR frequencies →

Charts & procedures

Lowest minimums here: RNAV (GPS) with vertical guidance · VFR sectional →

Airport info

From the field

Do you run KLNR, or an FBO, flight school, or shop on it? Claim your listing to keep fuel, fees, hours, and services current.

Airport information

ICAO / IATA: KLNR / LNR
Coordinates: 43.2099, -90.1813
Elevation: 717 ft MSL
Magnetic variation: 0E
Sectional chart: CHICAGO
Airport use: Public
Control tower: No
Weather station: ASOS · 119.425 · ☎ 608-583-2576
ARTCC: CHICAGO (ZAU)
Flight service (FSS): GREEN BAY · 122.3 · 1-800-WX-BRIEF
FSS outlet: RCO → Green Bay Radio (24)
NOTAM facility: LNR
Attendance: MON-FRI 0800-1700
Beacon: white-green (SS-SR)
Segmented circle: Yes
Wind indicator: yes
Activated: 1943/11
Distance from city: 2 N

Night operations

Airport lighting: SEE RMK
Rotating beacon: white-green · SS-SR
Pilot-controlled lighting: MIRL RWY 09/27 PRESET TO LOW SS-SR; TO INCR INTST & ACTVT REIL 09 & 27; MIRL RWY 09/27; MIRL RWY 18/36 - CTAF. PAPI RWY 09 & 27 OPR CONSLY. on 123.0 — Chart Supplement ↗

Runway lighting aids — 09: 2-light PAPI (left) · 27: 2-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 (additive)
Bottled oxygen: NONE
Bulk oxygen: NONE
Airframe service: MAJOR
Powerplant service: MINOR
Parking: tiedowns

Ownership & management 2 contacts

Owner

SAUK & RICHLAND COUNTIES

181 W SEMINARY ST, RICHLAND CENTER, WI

608-649-3001

Manager

MARK HIGGS

E2525 CO. HWY JJ, SPRING GREEN, WI

608-583-2600

Remarks FAA · 7 notes

General

FOR CD CTC MADISON APP/DEP CON AT 608-249-8240. WHEN MADISON APCH CLSD, FOR CD CTC CHICAGO ARTCC AT 630-906-8921.
COLD TEMPERATURE AIRPORT. ALTITUDE CORRECTION REQUIRED AT OR BELOW -31C.

Runways

OPERS CONSLY.
OPERS CONSLY.

Lighting

MIRL RWY 09/27 PRESET TO LOW SS-SR; TO INCR INTST & ACTVT REIL 09 & 27; MIRL RWY 09/27; MIRL RWY 18/36 - CTAF. PAPI RWY 09 & 27 OPR CONSLY.

Fuel

SELF SVC FUEL AVBL H24 VIA CREDIT CARD.

Contact

EMAIL ADDRESS: MARKHIGGSTCA@YAHOO.COM (ALL LOWER CASE)

Embed KLNR weather on your site free widget for schools, clubs & FBOs

Live METAR, flight category, and favored runway for KLNR — paste this into your website's HTML. It updates automatically and stays free.

<iframe src="https://skyready.app/embed/airport?icao=KLNR" title="KLNR live weather — SkyReady" width="100%" height="300" style="border:1px solid #dce5f2;border-radius:12px;max-width:420px" loading="lazy"></iframe>
<p style="font:14px system-ui;margin:6px 0 0"><a href="https://skyready.app/airport/klnr">KLNR live weather &amp; runways by SkyReady</a></p>

More widgets — crosswind, E6B, density altitude — on the embed page.

Nearby airports

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Also nearby: 93C Richland Airport (7 NM) · 22WN Southwind Airport (private) (9 NM) · WI66 Hallick Farm Airport (private) (19 NM) · 89WI Tuschen Airport (private) (19 NM) · 91C Sauk-Prairie Airport (19 NM)

About KLNR

Tri-County Regional Airport (LNR · KLNR) is an airport in Spring Green, WI, at 717 ft MSL. It has 2 runways, the longest 5,000 ft, with no control tower (pilot-controlled). This page shows live METAR/TAF weather, runway crosswinds, frequencies, navaids, and FAA charts for KLNR, refreshed from the Aviation Weather Center and FAA NASR.

Does KLNR have a control tower?

No. Tri-County Regional Airport is a non-towered (pilot-controlled) airport; use the published CTAF/UNICOM in the Comms & NavAids section.

What is the longest runway at KLNR?

Tri-County Regional Airport has 2 runways; the longest is 5,000 ft. See the Runways section for headings, surface, and lighting.

Where is KLNR?

Tri-County Regional Airport is in Spring Green, WI, at an elevation of 717 ft MSL. Coordinates: 43.2099, -90.1813.

Fly out of KLNR often?

Save KLNR 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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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 KLNR 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.