Ray (webmaster) on 8/20/2013 4:28:55 PM:
To share your distances and locations, I'd recommend an app called MapMyRide. It's GPS enabled, so it tracks location, speed, distance, and displays your day's travel on a map. At the end of your daily ride, when you save your trip, it gives you options to post the info on social media sites like Facebook. If you save your trip as "public", other people can see the details (location, distance, map image) at the MapMyRide website.
However, be aware that there might be some sections of the trail where your smartphone cannot get a data signal. In those locations (mostly remote), your app will not be able to save the trip info.