first take the hippo or boat from darnassus to auberdine. then take the boat to menethil harbor, when you're runnin from the inn there at auberdine it's on the left of the pier. from menethil it's a nice jog to loch modan through a higher level area, probably gonna die a few times. just follow the road, once in loch modan you can follow the signs to ironforge and take the deeprun tram to stormwind.