During the race, the lead out rider may choose to hug the measurement line on the inside of the track giving them the shortest path around the track. Likewise, they may choose to hug the sprinter's line (a red line 85 cm up track) to force their opponent to come higher over the top of them. The sprinter's line defines the sprinter's lane; once the sprint is initiated riders may not drop into the sprinter's lane or cross out of the lane unless they have a clear lead over their opponent.