Learn to estimate distances

I'm terrible at guessing how far things are. Is that parking spot big enough? How long will it take to walk to the metro? No idea. So I start paying attention asI pick a known distance, like the length of my office corridor or the block I walk every day, and actually measure it with my phone's step counter. Then I check my guesses against Google Maps or a measuring tape. After a few tries I start to get a feel for what 50 meters looks like or what 200 steps feellike. That might as well be useless but I'd love to be more spatially aware