Meshtastic is really cool. Any large city should have a set of routers already in place, and those can get you miles. I’m able to communicate with people 17 and a half miles away with the routers easily, but it really depends on your area. My city has a population of about 40,000, so any bigger than that, and you’re likely to have an even better time with it than I do. Any less than that, and you could have real problems for now.