Time-windows and durations are optional. If you are only interested in the optimal route without considering time, you can just omit the parameters. On large-scale problems, this will result in tremendous performance improvements! Keep in mind that the response will not include ETA values.

{
  "visits": {
    "order_1": {
      "location": {
        "name": "6800 Cambie",
        "lat": 49.227107,
        "lng": -123.1163085
      }
    },
    "order_2": {
      "location": {
        "name": "3780 Arbutus",
        "lat": 49.2474624,
        "lng": -123.1532338
      }
    },
    "order_3": {
      "location": {
        "name": "800 Robson",
        "lat": 49.2819229,
        "lng": -123.1211844
      }
    }
  },
  "fleet": {
    "vehicle_1": {
      "start_location": {
        "id": "depot",
        "name": "800 Kingsway",
        "lat": 49.2553636,
        "lng": -123.0873365
      },
      "end_location": {
        "id": "depot",
        "name": "800 Kingsway",
        "lat": 49.2553636,
        "lng": -123.0873365
      }
    }
  }
}

{
  "status": "success",
  "total_travel_time": 31.983334,
  "total_idle_time": 0,
  "num_unserved": 0,
  "unserved": null,
  "solution": {
    "vehicle_1": [
      {
        "location_id": "depot",
        "location_name": "800 Kingsway"
      },
      {
        "location_id": "order_3",
        "location_name": "800 Robson"
      },
      {
        "location_id": "order_2",
        "location_name": "3780 Arbutus"
      },
      {
        "location_id": "order_1",
        "location_name": "6800 Cambie"
      },
      {
        "location_id": "depot",
        "location_name": "800 Kingsway"
      }
    ]
  }
}