In Season 5, Episode 1, Walt and Jesse meet Mike on a one-lane dirt track in the middle of nowhere, after Mike has learned from the doctor that Gus is dead. How did they know when and where Mike would be driving?
They don't go to that specific road to meet Mike, they are travelling to intercept him, as you have identified.
Mike has been at a clinic 'Safe-House' of Gus', recovering from the stomach wound inflicted in 'Salud' S04E10. Jesse drove him and Gus there at the end of this episode. So Jesse knows where he is.
Mike is going to kill Walt, out of revenge and possibly to remove/eliminate witnesses, thus making himself unimpeachable.
On his way out from this remote location, he meets Walt and Jesse, who are travelling to it in order to gain Mike's assistance in removing the camera's 'evidence' from the now destroyed lab.