Her first experience at the international level was not very good: Soukalová's shooting accuracy and ski speed were at that time not as strong as many of her peers, and her best result at the 2008 Junior Worlds was a 22nd place.

Her performances improved: Soukalová, despite some difficulties in shooting, became better than Olga Vilukhina and helped the Czech women's relay team to win a gold at the 2009 Junior World Championships.

Her coaches subsequently made the decision to move her back down to the IBU Cup, but her period at that level was relatively brief after she regularly took good results and won a silver medal in the sprint at the 2011 European Championships.

[6] Her first significant success was in December 2011: in a World Cup mixed relay in Austria she helped to secure the Czech team second place.

At the final World Cup meeting of the season in Khanty-Mansiysk Soukalová managed to win a silver medal in the mass start.

In the 2015/2016 season put in strong performances: at the fifth round of the World Cup on 4 January 2016, even two missed targets did not prevent her from making the podium.

Gabriela showed good consistency, finishing no lower than 11th place during the season, and continued to lead the World Cup standings.

She led the standings in the 2015/2016 World Cup from start to finish, and won the overall Crystal Globe on 20 March 2016 with a final score of 1074 points.

[19][20] Soukalová sang duet with Štefan Margita named Teď budu mluvit já (Now I will speak) for her documentary.