I ran the Via Marathon in 2018 and enjoyed it. The expo left a bit to be desired; bib pickup was easy, but the free race shirt was a cotton tee, and there was no branded race merchandise for sale. The expo was held at the Steel Stacks in Bethlehem, so at least we got to explore this neat location.
The race started at the Lehigh Valley Hospital and followed the Little Lehigh Creek through Allentown and Bethlehem and ended in Easton. The course itself was mostly gravel, which can be challenging. There wasn't much crowd support, except at aid stations, but the aid stations were well stocked and volunteers were friendly. The finish line was great; lots of spectators and a nice medal.
Overall I would recommend this race to a runner who is comfortable running 26.2 without crowds and on gravel. The course is net downhill, so it could make for a great PR with the right mindset!