The quest was Securing the Supply Lines.
Luceigh was the second WoW character I started, after Mareigh. In classic second-character style (deliberately so), she's a night elf rogue. I sent her to all the content areas I didn't do with Mareigh, which, the reason I'd not chosen them in the first place being that I didn't like them, meant I was even more reluctant to play them through.
11 days 23 hours 52 minutes.
So that makes a paladin, a mage, a warlock and a rogue at 60. I'm taking the mage up to 70, but I don't know if I'll do the others — it depends on how much content there is between 60 and 70 that I haven't accessed,