5/10/15/20-minute walksheds for Chicago 'L' stations

I built this around a fairly specific house-hunting question: from a given address, which 'L' stations can I actually walk to in 5, 10, 15, or 20 minutes? The map uses Google's pedestrian network rather than circular distance buffers, then dissolves 580 station-duration results into four display bands.

The calculation is inbound -- a location qualifies when it can reach a station within the selected time. The original high-fidelity, unsmoothed polygons remain in this server's memory for station-level address checks.

Check a listing

The colored bands are merged Google-calculated walk zones. Search tests every original station polygon and reports each station under its shortest matching 5/10/15/20-minute bucket.

Display

Show merged walking bands

5 minutes 10 minutes 15 minutes 20 minutes

Show CTA station markers Include State/Lake, currently closed for reconstruction

Walking-data warning: Google states that walking routes are beta and may sometimes omit clear sidewalks or pedestrian paths. Verify any property close to a polygon edge directly in Google Maps before relying on it.

Station points come from the official CTA/City of Chicago GIS export, updated March 24, 2026. Google isochrone geometry stays in this server's process memory and is displayed on a Google Map.