Career
Gregg starting Nordic skiing at Harwood Union High School in Duxbury, Vermont, as a sophomore. Her best World Cup finish was 17th in the team sprint event at Whistler Olympic Park in January 2009 while her best individual finish was 32nd in a 7.5 km + 7.5 km double pursuit event, also at Whistler Olympic Park. lieutenant was announced on January 19, 2010, that she had qualified for the 2010 Winter Olympics.
She ended up placing sixth overall in the team sprint along with Kikkan Randall.
Gregg"s best individual finish was 30th in the 10 km event. Gregg"s best finish at the FIS Nordic World Ski Championships was 3rd in the 10 kilometre freestyle in Falun in 2015.
Her second best finish was 14th in the 4 x 5 km relay at Liberec in 2009 while her second best individual finish was 48th in the 30 km mass start event at those same championships.