If you dismount and walk about a third of the way, assuming you walk briskly, the time would be up to about two and a half to three weeks, if we go by the estimate of 1200km. However, this is only assuming relatively easy to pass obstacles (such as hills/nearby wading spots and bridges) and a relative beeline with no fighting/complications. Maybe a month by chocobo would be more realistic?
Add about two-to-three weeks for regular walking. A whole month would be safest to plan for.
Harsh terrain (desert/snowstorms/swamps and so on) can double or even triple your time in the area.
Add about two-to-three weeks for regular walking. A whole month would be safest to plan for.
Harsh terrain (desert/snowstorms/swamps and so on) can double or even triple your time in the area.