[1][2] In 2009, Johannes Thingnes Bø competed in the sprint at the Hovedlandsrennet in Beitostølen, securing a medal in the relay alongside Jarle Midthjell Gjørven, Runar Netland, and Johan Eirik Meland.

[3] Later that year, he won two gold medals at the Norwegian National Championships in roller ski shooting in Vik i Sogn, in the Men's 17 category, in both the sprint and pursuit events.

Overcoming a pre-season back injury, Thingnes Bø won six of the first eight individual races and led the World Cup standings by 116 points before Christmas.

[10][11] Despite taking parental leave in January 2020, Thingnes Bø maintained his dominance and won the World Cup title for a second consecutive year.

Thingnes Bø secured the overall World Cup title in a dramatic final race, edging out retiring rival Martin Fourcade by two points.