Time needed for complete Data Science trail


I’m curious about the Data Scinece Pro Path. This could be a nice way to go for someone like me that is working full time but is searching for a new career. What I wonder though is how much time are we talking about for completing all the courses stated under this path? I know it depends on the person of course, but just a general estimation?
Or at least how many hours will it add up to using Codeacademys estimation which I know is added to most(all?) courses?