Great Lakes Seaplane Base runways

Great Lakes Seaplane Base (41IL) in Antioch, IL has 1 runway, the longest 3W/21W at 3,451 ft (wat). Dimensions, headings, lighting, and instrument approaches for each below.

All of Great Lakes Seaplane Base — runways, frequencies, charts and live weather

Runway 3W/21W

3,451 ft · WAT

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21W

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Headings shown are true (magnetic variation unavailable).

Frequently asked

What is the longest runway at 41IL?

Great Lakes Seaplane Base has 1 runway; the longest is runway 3W/21W at 3,451 ft.

What surface are 41IL's runways?

Great Lakes Seaplane Base's runway is wat.

More about 41IL

Runway data from the FAA NASR (28-day cycle). For planning and education only; always verify against official sources.