The 2024–25 Biathlon World Cup – Stage 1 was the first event of the season and was held in Kontiolahti, Finland, from 27 November to 8 December 2024. The event consisted of three individual competitions and two relay races for both genders and two mixed relays. For the first time in history, a mass start race was held at the opening stage. To qualify for the mass start, participants needed to score the most points during the stage, while the remaining spots were filled according to the 2023/24 World Cup season rankings. World cup leaders after the events in Kontiolahti were Éric Perrot for men and Elvira Öberg for the women.