After a little looking around, I came across this video from a couple of years ago. Rod talks about his winning run at NY back in 1983. It's a pretty interesting account, especially his strategy to pass the leader, around mile 26, just 2/10ths of a mile from the finish! He looks as surprised as anyone the he did it! He attributes being able to pass the runner in front of him to the fact that he was able to run a shorter distance to the finish line by running the corners. Running the tangents is worth thinking about especially if you're running a course that has a lot of turns in it like the Santa Clarita course does.
Any way, if I can't run the Marathon, I look forward to getting in a nice run or two in New Zealand and I'll find another long race in December or January.