Career
During her acrobatic gymnastics career, Annonson competed nationally and internationally as the base of a women's pair with top Brittany Horrell on California Acrosports Team (CATs) in Sacramento, California with her coach Tonya Case. In April 2000, Annonson and Horrell took fifth place in the junior division of the Flanders Acro Trophy in Deinze, Belgium. At the 2001 Azur Acro Cup in Antibes, France during April, Annonson and Horrell placed third all-around (49150).
In 2002, they competed at the Machuga Cup in Krasnodar, Russia, winning the silver medal right under the reigning Russian world champions.
The women"s pair participated in the first Sports Acrobatics World Age Group Games during November 2001 in Zielona Góra, Poland, where they placed eighth in the all-around. They also competed at the 2002 Sports Acrobatic World Age Group Games in Riesa, Germany, where they placed sixth in the preliminary round.
Annonson retired from competition and began coaching in 2003. WCTC athletes includes the 2011 United States. mixed-pairs champions, Cassie Lim and Brian Kincher.
In 2008, 10 out of 20 athletes attending the World Age Group Championships from the United States of America were from WCTC. At the 2012 World Championships in Florida, Marie attended as the official Head Coach for the United States of America Delegation.
In 2014, she had 8 National Team members on the United States of America World Age Group delegation and 2 National Team members on the World Championship delegation. Within each program at United States of America Gymnastics, the federation recognizes coaches that have received the highest level of coaching distinction. This title is called the Master of Sport.
Marie was added to this honorary list in 2014.
Along with that recognition, her athletes Kristin Allen and Michael Rodrigues where also inducted into the United States of America Gymnastics Hall of Fame, Class of 2015. Marie Annonson also currently serves as Elite Committee Chair on the United States of America Gymnastics Acrobatic Program Committee.