I am posting in this forum because I have lots of RR points.

I am trying to get back into running and will be taking weekend trips to places that offer great running trails/routes. My ideal find would be a city that has cheap airfare from STL, has some reasonable lodging options (airbnb, hostels, etc), and running options that have dirt surfaces and no stopping for traffic. I would consider Amtrak destinations as well. I am trying to avoid renting a car but I would break this rule for a fantastic destination. I'm not looking for pure wilderness like a remote trail in the mountains, but rather something like Central Park NYC or other great places to run in a town setting. Dirt trails would be a bonus. Feel free to suggest a great running destination even if it doesn't fit my cost criteria, it will give me something to dream about.

I'm not looking for organized races but would definitely consider them if the date lined up with a great airfare.

Edit: Thanks for all the fantastic responses!