In 2018, Thoresen won one of the bronze medals in the men's 67kg event at the
European U23 Wrestling Championship held in Istanbul, Turkey. A month earlier, he competed in the
67kg event at the
European Wrestling Championships without winning a medal. He was eliminated in his second match by Fredrik Bjerrehuus of Denmark. He was eliminated in his second match by
Frank Stäbler of Germany. In March 2021, he competed at the
European Qualification Tournament in Budapest, Hungary hoping to qualify for the
2020 Summer Olympics in Tokyo, Japan. Thoresen did not qualify at this tournament and he also failed to qualify for the Olympics at the
World Olympic Qualification Tournament held in Sofia, Bulgaria. In October 2021, Thoresen competed in the
67kg event at the
World Wrestling Championships held in Oslo, Norway. He was eliminated in his third match by eventual bronze medalist
Almat Kebispayev of Kazakhstan. He competed in the
67kg event at the
European Wrestling Championships in Budapest, Hungary where he was eliminated in his second match. A few months later, he competed at the
Matteo Pellicone Ranking Series 2022 held in Rome, Italy. He competed in the
67kg event at the
2022 World Wrestling Championships held in Belgrade, Serbia. Thoresen competed at the
2024 European Wrestling Olympic Qualification Tournament in Baku, Azerbaijan hoping to qualify for the
2024 Summer Olympics in Paris, France. He was eliminated in his third match and he did not qualify for the Olympics. == Achievements ==