I don't have an answer for you but given that it is not dark until around 9PM in the Summer, I would agree with you. I would treat it like a Municipal Park or Forest Perserve and say it closes at dusk.
Today it looks like it closes at 5 which seems early. I think that just means the buildings, restrooms etc close at 5. I have definitely walked the path after work around 5:30 and had no problems. The track is not gated or fenced off. I would guess utilizing the track during day light hours is ok.
Sorry no clue
Awesome super helpful thanks
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