Get distance from source to destination via way-points

[PrakashMani]

I am using asynchronous routing service to find the distance between source and destination via way-points. When I give way-points, I am getting different value in the Total_Kilometers(83) field but the actual distance is only 33 KM. Can someone please tell to get the actual distance from source to destination via way-points?

Request:

{
"type": "features",
"LocationType": "1",
"features": [{
"geometry": {
"x": 80.1604766845703,
"y": 13.0624952316284
}
},
{
"geometry": {
"x": 80.1640701293945,
"y": 13.1163520812988
}
},
{
"geometry": {
"x": 80.2768020629883,
"y": 13.218768119812
}
},
{
"geometry": {
"x": 80.0792617797852,
"y": 12.8535680770874
}
}
]
}

Response:

{
"paramName": "Output_Routes",
"dataType": "GPFeatureRecordSetLayer",
"value": {
"displayFieldName": "",
"geometryType": "esriGeometryPolyline",
"spatialReference": {
"wkid": 4326,
"latestWkid": 4326
}
...
...
"features": [{
"attributes": {
"OID": 1,
"Name": "Location 1 - Location 4",
"StopCount": 4,
"Total_Minutes": 124.55307562869066,
"Total_Kilometers": 83.201435897857806,
"FirstStopOID": 1,
"LastStopOID": 4,
"Total_Miles": 51.698979999999999,
"Shape_Length": 0.75629657258452343
},
...

[JaySandhu]

I think you should check your inputs. 

You are sending in three points but the output response says four stops:

   "Name": "Location 1 - Location 4",
   "StopCount": 4,

So there could be an extra "stop" being sent that is causing the path to be longer.

Jay Sandhu

[PrakashMani]

Sorry Jay, gave wrong request. Updated the question with correct(4 stops) request payload. 

As the stop points are getting increased, the Total_Kilometers is also getting increased. Actual distance b/w source and destination is 33 KM. If I just give source and destination, I am getting correct result, 33 KM. If I add 4 stops(2 interim, 1 source, 1 destination), KM is getting increased to 83, If add 2 more stops, its getting increased to 126 KM. I don't know hot to get only 33 KM even if I add interim points.

[JaySandhu]

The route solver will solve a path through the stops in the order you give them in. So If you solve a path with the coordinates you provided, you get a path that is 83 KM. See the order in the screen shot below.