I have been asked this alot, so posting this for the ones who have not seen this.
Select the
last quest in Act2. When you enter game, do not advance further into the city. Teleport back to town, and go to
Desolate Sands.
Find the
Assassin's Vault. You will receive a
checkpoint, so now when you leave game and rejoin, you will always start here.
Clear the
Assassin's Vault - Normall
6-9 Elites/Champs, possibly
1-2 Goblins.
After you have cleared the Vault, head back to town and follow this route for fast clears.
Sewers of Caldeum -
1 Champ/Elite and possible goblin.
Black Canyon Mines -
1-4 Champ/Elite and possible goblin.
Road to Alcarnus --->
Alcarnus 1-2 Champ/ElitePath to Draugar(sp?) --> Enter the "
Ruined Cistern" right next to the WP.
1-2 Elite/Champ, possible goblin. (I find the majority of my
legendaries here)
ID your rare, and next game.
This route takes me about 15-20 minutes.