If you do any activity that involves traveling a route and you'd like to plot your journey and even measure the distance, try this Website - http://www.freemaptools.com/measure-distance.htm
It is easy and works great!
Here is an example of a map I created using the Website. It shows the 4.3 mile route that my family and I paddled recently.
Give it a try and let me know what you think OR if you need help.