Geir Ole Steinslett took part in the Junior World Championships in Pokljuka for the first time in 1999 and was seventh in the individual and won the silver medal behind the Swedish relay with Stian Eckhoff , Jon Kristian Svaland and Syver Berg-Domaas. In the following year he won the bronze medal in Hochfilzen in the individual behind Fabian Mund and Andreas Birnbacher , was ninth in the individual and fifth in the pursuit. In the relay race he won the bronze medal behind Germany and Russia with Kent Roger Guttormsen, Sveinung Strand and John Ola Ulset. In 2001 he was promoted to Norway's World Cup squad. Steinslett played his first race in an individual in Pokljuka, which he finished 57th. He immediately reached the pursuit race in his first race, in which, however, he was eliminated as a lapped runner. Shortly afterwards he won World Cup points for the first and only time in Osrblie as 28th. In Kontiolahti , Steinslett took part in a major event in the men's area for the first and only time at the 2002 European Biathlon Championships . In the singles he finished 26th, with the relay he was eighth alongside Jon Kristian Svaland, Hans Prösch and Hans Martin Gjedrem . After the season Steinslett ended his career.
After his active career, Steinslett became a coach and looked after, among others, Kari Henneseid Eie and later became assistant coach of the women's national team under coach Audun Svardal , from 2008 to 2010 under Knut Tore Berland and since then under Egil Gjelland . Steinslett is responsible for the shooting training. In 2014 he moved to the men's national team with Gjelland. In 2016 he was replaced as shooting coach by Siegfried Mazet .
Biathlon World Cup placements
The table shows all placements (depending on the year, including the Olympic Games and World Championships).
1st - 3rd Place: Number of podium placements
Top 10: Number of placements in the top ten (including podium)
Points ranks: Number of placements within the point ranks (including podium and top 10)
Starts: Number of races run in the respective discipline