Although the Oakland Marathon or Half Marathon, Oakland, CA isn't for everyone, I'll just put this out there.
Registration event fees have crept up over the years, and a little bit of savings can only help those who run multiple events every year.
Events: Oakland Marathon or Half Marathon (not sure if code will work on the 5k or Team Relay events)
Events Weekend: March 24 and 25, 2012
Click here for more info. and/or to get your $5 off code.
I believe the code is valid until March 21, 2012, or whenever the event sells out, if the events do sell out.