Jackson finished second overall out of 139 athletes in an exciting photo finish at the 2013 Lehigh XC 6K Invite. The junior sprinted over the finish line at 22:46.66, just one second behind the first place finisher Rose Willey of Lafayette. Jackson outkicked Lafayette's number two runner Stephanie Benko for second place. Averaging 6:06 per mile, Jackson set a personal record in the 6k at the event.