NavMeshPath.corners

Description

Corner points of the path. (Read Only)

Also known as "waypoints", the corners define the places along a path where it changes direction (ie, the path consists of a number of straight-line moves between corners).

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour {
    float PathLength(AI.NavMeshPath path) {
        if (path.corners.Length < 2)
            return 0;
        
        Vector3 previousCorner = path.corners[0];
        float lengthSoFar = 0.0F;
        int i = 1;
        while (i < path.corners.Length) {
            Vector3 currentCorner = path.corners[i];
            lengthSoFar += Vector3.Distance(previousCorner, currentCorner);
            previousCorner = currentCorner;
            i++;
        }
        return lengthSoFar;
    }
}