If you have Google Earth installed, and open the file in the link, you'll see a display of the route that day. If you select the track element that has the date in it, you can click the little play button below it and 'fly' along the route.
Be aware, I recorded these tracks on a GPS-equipped phone. It ssometimes had a less than optimal signal when under trees, in tunnels, or in deep valleys, so it sometimes sseems we went haring off cross-country.
The easiest way to follow is to use the keyboard controls (muck around with arrow keys, shift-arrow and page-up/down to get most of the movement you need. The adventurous might want to fire up the Google earth flight sim, but I just keep crashing it.