Be warned that if your century ride is popular, the Garmin Livetrack system may be overloaded in your area. This happened to me on the Seattle to Portland ride, got to the start line at 6am and after 20x tries, the Garmin connect app simply would not work. It kept giving server errors. I had to ride the first day without my girlfriend knowing where I was which was a bummer. Day 2 it worked again.