For driving I assumed 55 miles per hour, for walking 2.5 miles per hour, etc. The radius of the circle was calculated from the travel time and travel mode entered. Pick the destinations at each bearing with the travel time closest to that enteredĪsk Google for the LatLng (Latitude and Longitude) of the starting addressĬalculate the LatLng of a set of evenly spaced destinations around the originįor a first approximation, I started with 25 points at a fixed distance from the origin, arranged in a circle.Repeat steps 3 and 4 for a given number of iterations.Calculate a new distance estimate for each bearing based on this travel time.Ask Google for the travel time to each of those destinations.Calculate the LatLng of a set of evenly spaced destinations around the origin.Ask Google for the LatLng (Latitude and Longitude) of the starting address.Here is an outline of the approach that I took. Depending on the routes available by the selected mode of travel, you may be able to travel further in some directions than others. It's not as straightforward as drawing a circle at a given distance from the address. It would then generate a map using JavaScript showing the origin, and drawing a boundary that represented how far you could travel. I decided to build a website where you could enter an address, a travel time, and a travel mode (e.g.

Or you want to make a day trip somewhere and want to see where you could drive in a couple of hours. Perhaps you're visiting somewhere new and just want to see what you could walk to within an hour of your hotel. But if you just want to know how far you could travel from a given address in an hour, then it isn't much help. If you have a specific destination in mind, then Google Maps is perfect for estimating how long it will take to get there, by various modes of travel.

Travel time google