Come along with me as I jog through Potomac Overlook Park. This is about 18 minutes of an hour long run (with most of the run being me getting to and from the park). At first glance, there's not much here in this audio clip. But if you think of it as an ambient experience, you'll actually pick up a number of different clues (like the various stream crossings and me sucking wind as I tackle a big o'l chunk of uphill trail).
So put on the headphones, turn off the lights, and let's run.