muellercornelius

// Copyright (c) 2019, the Dart project authors.  Please see the AUTHORS file
// for details. All rights reserved. Use of this source code is governed by a
// BSD-style license that can be found in the LICENSE file.

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override

muellercornelius

Polyline track = new Polyline(polylineId: PolylineId("1"), points: [/*your track data*/]);
distance = 0;

for (int i = 0; i < track.points.length; i++) {
   if (track.points.length > 1 && i > 0) {
      LatLng startPoint = track.points[i - 1];
      LatLng endPoint = track.points[i];
      distance += Geolocator.distanceBetween(startPoint.latitude, startPoint.longitude, endPoint.latitude, endPoint.longitude);
   }
}