I prefer the typical isochron presentation over the warping. It's unfortunately hard to find free, public isochron maps, though. Some examples I've found: http

I prefer the typical isochron presentation over the warping. It's unfortunately hard to find free, public isochron maps, though. Some examples I've found: https://www.targomo.com/developers/apis/isochrone/ https://www.targomo.com/developers/apis/isochrone/ https://direkt.bahn.guru/?origin=8503000 https://direkt.bahn.guru/?origin=8503000 https://www.chronotrains.com/en https://www.chronotrains.com/en