Seven MotoGP races are to be shortened for the 2018 season onwards. The MotoGP races at Austin, Le Mans, Barcelona, Brno, and Misano are all to be cut by a single lap, the race at Jerez is to lose two laps, and the season finale at Valencia is to be reduced by a whole three laps.
The reason for the reduction in length is to bring the races into line with the remainder of the calendar, and create a consistent time schedule. Previously, the MotoGP regulations specified a minimum and maximum length for races (between 95km and 130km), but for 2018, the specification of distance has been dropped. Race distance for all events is now to be determined by the Permanent Bureau, consisting of the FIM and Dorna.
The old race distances caused a large variation in race duration. Races could last anywhere between 40 and 45 minutes, making scheduling for TV problematic. It also meant that if there were delays at the start, or if races were wet, they could overrun the allotted TV slot, causing major headaches for broadcasters. It meant that audiences were never sure whether they would get to see the Parc Fermé interviews or podium ceremonies.