Chicago is 100 ms. Which is high but not unreasonable. It's more important that there is no or not much jitter. 56k analog has much jitter due to being analog. With digital lines and fiber optics the jitter is lower. But, the larger the distance the more chance on jitter anyway.
The problem with all this is that I had opened a server last year in San Francisco but nobody was interested and the eastern side of the US has much lower pings due to a low ping hub in NY so people close to NY do connect to Europe based servers most of the time.
LFS need to support server redirection. With COD2 it already was possible to move a connecting player to a different server automatically. It's the only way to make LFS more popular globally.
But eeeeeeeehhh... We have to wait on other progress first. I'm afraid