Gemena is located in Mbandaka city, Democratic Republic of the Congo at the 3.2565, 19.7723 coordinates. Distance from Gemena to other cities. are listed below, click on the city name to find distance between. Distance from Gemena to Bumba 322 km, to Lisala 229 km, to Gbadolite 178 km. The green marker indicates the location of Gemena.