What do you consider walkable range? I bike five miles to work. But I find walking more than about a quarter mile with two day's groceries to be very unpleasant

What do you consider walkable range? I bike five miles to work. But I find walking more than about a quarter mile with two day's groceries to be very unpleasant in the heat. Maybe taking a backpack would do the trick. But loading up my bike, or my bike plus a trailer, is far more pleasant for all but the shortest distances. Maybe I've just not experienced it yet, but it's hard to fathom every hardware store, grocery store, bar, restaurant, workplace, school, city rec center, post office, etc that I would ever really want to visit could reasonably fit into a quarter mile square.