I have some running buddies in PA- they all have good things to say about Hyner. Personally I like the 25-35-ish k distances, plenty challenging without the complete sufferfest of the 50k+ races. A lot of venues are doing those distances as it attracts more folks and typically they run through most of the same country so you’re usually not missing out on the views.
I think you’ll find signing up for a race is a great motivator