Google Maps JS API V3 - Get distance between two points in miles using the Geometry library.

gmaps-distance-miles.js

/*
IMPORTANT:
You must edit the <script> for the Google Maps API to include the Geometry API library, by adding to the URL: &libraries=geometry

Example:
<script async defer src="https://maps.googleapis.com/maps/api/js?key=YOUR_KEY&libraries=geometry"></script>
*/

// Define two points using LatLng objects
var point_a = new google.maps.LatLng( 44.037307, -123.110091 );
var point_b = new google.maps.LatLng( 44.034851, -123.099449 );

// Get the distance between the two points in miles
var distance_miles = getDistanceInMiles( point_a, point_b ); 

// Show the distance, rounded to 2 decimals
alert( "The distance between point_a and point_b is: \n\n" + distance_miles.toFixed(2) + " miles" );

// Get distance in miles. The API returns distance in meters, and we can easily convert that with multiplication.
function getDistanceInMiles( point_a, point_b ) {
	var distance_in_meters = google.maps.geometry.spherical.computeDistanceBetween( point_a, point_b );
	return distance_in_meters * 0.000621371; // convert meters to miles
}

thanks!

How to get the real distance by driving

How to get the real distance by driving

Not with this code. You'll need to look into the different maps apis.