The worst!

I also agree with this nomination.

And to think I was going to vote for anything to do with Desolace.

Grom'gol to Kargath for those of us who didn't know better on our first character. I still remember the look on my roommate's face when he saw me heading towards Blackrock Mountain around level 42.

And the run to Silithus was REALLY annoying back in the day, since we didn't have the flight point in Un'Goro as a waypoint.

But of the walks I still have to take, Hammerfall to Kargath is a bad one, as is that walk out to the Zoram'Gar Strand from Splintertree Post (not so bad with a mount, but you're usually around level 18-23 when you take that run, so no mount). Undercity to Light's Hope Chapel is still annoying as well, though at least you only have to cross one zone in between and you have a mount.

I like the Hammerfall to Kargath run, especially on PvP servers. Running across the random ?? Alliance toon helping a lowbie level is a bit of masochistic fun... and the constant fear that you WILL run across the ?? Alliance makes the run a bit of a white-knuckle experience.

This run gets a little less painful if you take the transporter to Gnomeregan; you still have to run through two zones (Dun Morogh and Loch Modan) but it's definitely shorter than running from Hammerfall.

You can take the transporter by taking the Gnomeregan quest in Orgrimmar (in the Valley of Honor), and then going to Booty Bay to find Scooty. He will transport you to Gnomeregan and you can start running :-).

I missed out on the run to Kargath because I got portalled to Uldaman first... I'd highly recommend that before running it.