I haven’t even tried to see if the two tracks near me are open. One is at a HS. The other is a university.
I used to do longer intervals (1k/1mi) on a paved trail near me. That is near impossible now because it’s packed with people. I might still be able to do Tempo runs there, but there would be lots of people dodging.
There’s a park near me on the ocean that no one ever visits. 200m access road with a loop at the end to give me ~400m. One speed bump as an obstacle and the occasional vehicle snooping through. Not too bad.