where is the best place to see some nonstop NS train?
Depends on where you want to railfan....
Either Fostoria, the Rathole, and sometimes even the Pokey (if you're up near Welch). But that's just what I've heard.
i live in florida. so altoona is probly the closest
Any place that has a main line would get you a decent ammount of traffic. With that being said some places have more traffic than others. Part of the answer depends on what you mean by non stop. Do you mean trains that don't stop to work industry and keep traveling, or train after train after train passing one spot?