This is a hot buy on some really good running shoes (in women's):
New Balance WT20 Black/Pink - 6pm.com
Don't forget this code for %10 additional off: 6PMCYBER122612QAA
I own these shoes in men's, and they are quite excellent, lightweight, and definitely recommended. I use them for more than running, too, because they feel pretty durable, so I use them for work. Lots of other shoes on sale at 6pm though, and that's a general code, I think.
Edit: Here's another for $35 before coupon. Even better!