"For those of you who are running the NYC Marathon, BRRC will again this year, have a bus leaving from 15th st and PPW, at 6am. To reserve a spot on the bus, contact Steve Bonal at 917-238-9447. The fee is $20 for non-members, $10 for members."
For those of you (Brooklyn residents) who are taking a bus to the marathon, I'd urge you to consider the PPTC or BRRC buses if it will save you time and give you an extra hour of sleep before the race.
You will spend a few hours sitting around in Staten Island anyway, so this may make the journey and time spent before the marathon a little more palatable. Yes, you had to pay the money to NYRRC, but it's worth writing that off (and sending them a note about it).