

I live close to the central area of an ~80,000 population city.
Looking at Google maps I’ve got about 10 general stores within 300 meters, probably thrice that within 500m, plus plenty of smaller specialised stores.
300 to 600m seems like a reasonable distance to walk to and back with four to six bags of groceries.
For smaller more specialised shopping trips one or two kilometres would be fine too.
Three might be a bit much, though I’ve often walked that to go to the cinema.
I still have a fondness for TARGA (.TGA) from back in the day…