The Royals use two baseball fields: 

Rud Baseball Banen is one of two full-size baseball fields in the Oslo area. The Elite Series and Forbund Series teams practice and play games at Rud field. Location:
Johs. Haugeruds vei 20, 1352 Kolsås

Hosle Little League Banen is where the little league team plays. Hosle field is located at:
Bispeveien 69, 1362 Hosle