I finished in 1:04.52, a pb for me as well, but I also have my doubts as to whether the course was exactly 10 mile.
Fair enough they were forced to change the course at a late date, but they also said it was officially measured and certified.
I'm saying it was as much as 400m short, so if you had done a lap of the track to finish it would've been about right and I would've still got a pb (1.06.30-ish?). I'd rather run long than short.
Other than that it was a great race.