Achievements-Complete Events
On A Long, Winding Road is an achievement that players can unlock after completing 5,000 events(*). Players that have completed this achievement will be rewarded with 25 Icon Gold. On A Long, Winding Road is succeeded by the And They Never Stopped achievement.

(*) To clarify, in game it's called events, actually the player has to complete races, as shown on page two of the players profile, races can be run more than once, the reward is given on completing the required quantity of races.