A very useful new tool.
The fastest journey from Roma to Constantinopolis in January takes 20.7 days, covering 2951 kilometers.
Prices in denarii, based on the use of a faster sail ship and a civilian river boat (where applicable), and on these road options:
* Per kilogram of wheat (by donkey): 4.37
* Per kilogram of wheat (by wagon): 4.99
* Per passenger in a carriage: 580.42