I ran the course for the first time this year as well. The net downhill argument is silly: Boston is more downhill but in my mind, a more difficult course.
I didn’t find the downhill though to be that crazy. There were probably 3 downhills that I thought were very down, but there are rollers. No, they aren’t hills, and they can’t compare to NYC or Boston. But enough to say that if you trained on dead flat land your entire cycle, you will not do well.
I’d also say just because you ran a PR doesn’t make it illegitimate. That’s a weird way to look at results. You should run faster than NYC, especially at your pace, where things can get really crowded in NYC. I’m not critiquing you for being slow like other typical LRC posters, but more that the closer you get to 3+, the worse your experience will be on any major marathon.
It’s also weird to criticize the post race experience and the crowd support. Not sure what you were expecting. CIM bills itself as a place you go to run fast, not where you go for crowd support (that’s what Boston/NYC are for).
CIM logistics are SO much better than other races that have that number of people. I loved just rolling off the bus, using the port-a-potty, and heading to the line.
If there is one critique of the whole thing, I do agree on the corrals. With how popular this race is getting for people going for fast times, you can’t let people self-seed. I know CIM is trying to keep that “small race” feel, but it’s not that anymore and they should have a time requirement corral for something like a sub 3 corral.