From 1994 until 1996 Landsem coached Rælingen in 3. divisjon, the regionalised fourth tier of men's football in Norway.
She was the first female to coach a male team at such a high level of the Norwegian football league system.
She qualified the team for the 2011 FIFA Women's World Cup in Germany, but Norway crashed out in the first round.
Results did not improve and a review carried out by Football Association of Norway's (NFF) Nils Johan Semb revealed that some players were unhappy with Landsem.
From November 2014 to March 2015 she managed another men's team, Fjellhamar FK, but resigned due to lack of available players.