Method: computeCustomRoutes

Given a set of terminal and intermediate waypoints, and a route objective, computes the best route for the route objective. Also returns fastest route and shortest route as reference routes.

NOTE: This method requires that you specify a response field mask in the input. You can provide the response field mask by using the URL parameter $fields or fields, or by using the HTTP/gRPC header X-Goog-FieldMask (see the available URL parameters and headers. The value is a comma separated list of field paths. See this detailed documentation about how to construct the field paths.

For example, in this method:

  • Field mask of all available fields (for manual inspection): X-Goog-FieldMask: *
  • Field mask of route distances, durations, token and toll info: X-Goog-FieldMask: routes.route.distanceMeters,routes.route.duration,routes.token,routes.route.travelAdvisory.tollInfo

Google discourages the use of the wildcard (*) response field mask, or specifying the field mask at the top level (routes), because:

  • Selecting only the fields that you need helps our server save computation cycles, allowing us to return the result to you with a lower latency.
  • Selecting only the fields that you need in your production job ensures stable latency performance. We might add more response fields in the future, and those new fields might require extra computation time. If you select all fields, or if you select all fields at the top level, then you might experience performance degradation because any new field we add will be automatically included in the response.
  • Selecting only the fields that you need results in a smaller response size, and thus higher network throughput.

HTTP request


The URL uses gRPC Transcoding syntax.

Request body

The request body contains data with the following structure:

JSON representation
  "origin": {
    object (Waypoint)
  "destination": {
    object (Waypoint)
  "intermediates": [
      object (Waypoint)
  "travelMode": enum (RouteTravelMode),
  "routingPreference": enum (RoutingPreference),
  "polylineQuality": enum (PolylineQuality),
  "polylineEncoding": enum (PolylineEncoding),
  "departureTime": string,
  "routeModifiers": {
    object (RouteModifiers)
  "routeObjective": {
    object (RouteObjective)
  "languageCode": string,
  "units": enum (Units)

object (Waypoint)

Required. Origin waypoint.


object (Waypoint)

Required. Destination waypoint.


object (Waypoint)

Optional. A set of waypoints along the route (excluding terminal points), for either stopping at or passing by. Up to 25 intermediate waypoints are supported.


enum (RouteTravelMode)

Optional. Specifies the mode of transportation. Only DRIVE is supported now.


enum (RoutingPreference)

Optional. Specifies how to compute the route. The server attempts to use the selected routing preference to compute the route. If the routing preference results in an error or an extra long latency, then an error is returned. In the future, we might implement a fallback mechanism to use a different option when the preferred option does not give a valid result. You can specify this option only when the travelMode is DRIVE or TWO_WHEELER, otherwise the request fails.


enum (PolylineQuality)

Optional. Specifies your preference for the quality of the polyline.


enum (PolylineEncoding)

Optional. Specifies the preferred encoding for the polyline.


string (Timestamp format)

Optional. The departure time. If you don't set this value, then this value defaults to the time that you made the request. If you set this value to a time that has already occurred, then the request fails.

A timestamp in RFC3339 UTC "Zulu" format, with nanosecond resolution and up to nine fractional digits. Examples: "2014-10-02T15:01:23Z" and "2014-10-02T15:01:23.045123456Z".


object (RouteModifiers)

Optional. A set of conditions to satisfy that affect the way routes are calculated.


object (RouteObjective)

Required. A route objective to optimize for.



Optional. The BCP-47 language code, such as "en-US" or "sr-Latn". For more information, see See Language Support for the list of supported languages. When you don't provide this value, the display language is inferred from the location of the route request.


enum (Units)

Optional. Specifies the units of measure for the display fields. This includes the instruction field in NavigationInstruction. The units of measure used for the route, leg, step distance, and duration are not affected by this value. If you don't provide this value, then the display units are inferred from the location of the request.

Response body

If successful, the response body contains an instance of ComputeCustomRoutesResponse.

Authorization Scopes

Requires the following OAuth scope:


For more information, see the OAuth 2.0 Overview.