It empties into the Unstrut in Straußfurt. The total length of the Gera (including Wilde Gera) is 85 km. The largest towns along the Gera are Arnstadt and Erfurt. The city Gera is not situated along the River Gera.

Along its way, Gera River splits up and reunites multiple times. Branches of the Gera are:
* Converging Tributaries: Wilde Gera, Zahme Gera
* Erfurt Area: Flutgraben