コンコルド協定
The following nineteen races appeared on the 2013 race schedule. Bernie Ecclestone, Formula One's commercial rights holder through his Formula One Management and Formula One Administration companies, has previously said that he believes twenty races is the maximum that is viable. The number of races on the Formula One calendar is dictated by the Concorde Agreement, the arrangement between teams, the FIA and Formula One Management. At the time of Ecclestone's comments regarding the length of the series schedule, the then-current Concorde Agreement was set to expire at the end of the season. Twenty to twenty-five races would be possible if the teams agreed to it.