A couple of friends and I took the bus from Kigali to Gisenyi in March. There were a couple of conflicting guides on how to get to Gisenyi from Kigali so I’m writing this down for any similarly curious travelers.
From the Nyabugogo Bus Station in Kigali, you can hop on a Ritco bus which will take you to Gisenyi by way of Musanse. See this blog post for photos.
Ritco buses are government run, leave very punctually at the half-hour, and use paper tickets with QR codes. You can buy tickets at the bus station, so no need to buy in advance.
The journey is 4 hours with several stops for restroom breaks. You get to course through the spectacular hills of Rwanda against the background of upbeat Nigerian pop music.
Google Maps thinks there are two bus stops in Gisenyi. In reality, there’s only one: the one next to the DRC border. The other stop is a nondescript location far from hotels and difficult for taxis to locate. Don’t make our mistake! Disembark at the blue dot.