I know it says that it “opens” at 6:00am but if I only want to run the track at 5:00am, is that possible?

The Official hours of our parks are from Sunrise to Sunset, but we're not going to stop you from coming early before the heat! Source: I work for the Rec. Dept.

There are no gates to stop you & I highly doubt anyone would question you

Thank you for the quick reply