Since her retirement, Maruyama has been active as a television personality, represented by the talent agency Horipro.

After graduating from Nippon Sport Science University, she joined TEPCO Mareeze in 2005 and was assigned to the section of Fukushima Daiichi Nuclear Power Plant.

She left the league in 2010 to play for the Philadelphia Independence in the United States.

In August 2002, Maruyama was selected to the Japan U-20 national team to play in the 2002 U-19 World Championship.

At the 2011 World Cup in Germany, she scored the only goal of the game, defeating the host country and taking Japan to its first ever semifinals of the tournament.