No bag drop. Your best bet is your local gym, New York Running Company (inside Time Warner building) or NYRR RUNCENTER.

There are two bathrooms nearby. One is near the entrance to Tavern On the Green. The second is down the steps to Bethesda Terrace.

Same as the bathroom situation. There is one across the road from the Tavern On the Green bathroom or next to the steps to Bethesda Terrace.

No changing room.