Silvermoon to Durotar?

[Kuroishi]

what's the easiest, safest way to get from Silvermonn to Durotar?

[BigChiefSmokem]

inside the Sunfury Spire and Inner Sanctum there is an Orb of Translocation to the Ruins of Lordaeron (Undercity)... use it and after you arrive at the ruins go north and you will run into the zeppelin which will take you to Orgrimmar (the other zeppelin takes you to Grom'Gol Camp in Stranglethorn Vale)