Where the data comes from

See how well we know your streets.

Tree canopy — height and cover both — plus OpenStreetMap cover the whole map, everywhere, so shade renders no matter where you run. Below, we've gone further — verified local crossings, confirmed-missing sidewalks, cities' own bike-lane maps, a sharper national canopy dataset, and imported building shadows, sourced directly from the city, state, or Overture Maps.