[1] Grete Gaim made her international debut at the Biathlon Junior World Championship in 2010 in Torsby, where she placed 63rd in the individual and 48th in the sprint, not finishing the pursuit.

A year later Gaim was at the Junior World Championships in Nové Město na Moravě 50th in the individual, 19th in the sprint, 18th in the pursuit and with Johanna Talihärm and Daria Yurlova 6th in relay competition.

In Nové Město na Moravě she was able to achieve her best result so far in the highest racing series with a 75th place in the sprint.

Her biggest achievement to date is the gold medal in the pursuit at the World Junior Championships, held in Kontiolahti, Finland in February 2012 .

At the start of the 2013/14 season she won in Östersund in a single as 39th World Cup points for the first time[2] This Estonian biographical article relating to biathlon is a stub.