I haven't been following or digging the whole "Cave" comms thing that's going on, but in looking into what else POTUS may have been hinting at by "off to the races" this came up.

This race scheduled for 2 days after POTUS' "races" tweet was to be held at "The Mammoth" in Park City, KY.

I knew "Mammoth Cave" was a thing (turns out it's ''THE BIGGEST CAVE SYSTEM IN THE WORLD''), so just wanted to post it here before moving on with whatever I was looking for. Apologies if this is old news.

sauce: https://www.cyclenews.com/2019/01/article/mid-south-cross-country-race-scheduled-for-january-27-is-postponed/