The numbers along the route designate the sol number of reaching that point. These are the number of Martian days, or sols, since Curiosity’s August 2012 landing. The arrival drive, on Sol 589, was on April 2, 2014. The drive entering the area of this map, on Sol 572, was on March 16, 2014.
Home » Map of Curiosity Mars Rover’s Drives to ‘the Kimberley’ Waypoint