Despite being extremely cheap, the bus is also very slow and getting from Nice to Troyes by bus will take you a while. You could consider travelling by plane, getting low-cost tickets if you can book in advance.
When are the buses of the line Nice - Troyes scheduled?
To get to Troyes from Nice by bus, it will take you around 16 hours and 50 minutes, or even 15 hours and 35 minutes if you choose the fastest solutions. The first bus leaves Nice at 21:08, while the last one is at 21:08.
By bus from Nice to Troyes: which companies offer the service?
With Ouibus you will be able to travel trom Nice to Troyes by bus.