If you're like me and want/need a visual, here you go.
I would probably take the Green path, but thats just because it's always been my path of choice. Red would be next easiest, but would take longer. Orange took me ~4 hours to get through at 60dp with an entire coordinated group (NOT fun... also ran it with 8 wars on my warrior... took us ~100 candy canes before we made it, lol)
forge is SW of the orange line... ran out of map, lol