The Glenwood, Pittsburgh track ran along the right bank of the Monongahela from Glenwood Bridge up to Birmingham Bridge. It wasn't an oval but would have been 4.5 – 5 miles one-way, give or take.

Curious because the "wood" in Glenwood is Henry (Harry) Wood, Jr., the fellow who bought the piano (for his wife) on which Foster composed a lot of his best stuff, including I Dream of Jennie...;

Foster dedicated songs to Henry's wife Rachel and her sister Mary Keller;

Nellie Bly was the Wood's servant.

Henry Wood gentrified the course proper (hotels, private clubs &c.) just a few years after the song came out.