Go to Craigslist type in your city, search for treadmill! Sort by cheapest price. You'll find a lot of free ones and a lot of good ones for less than $200. Mainly because you have to go pick it up and haul it out. There's plenty of "free if you come pick it up!" 8 out of 10 will be in good condition because they bought it and never really used it. So it just sat in a corner or a garage or became a clothes rack.Link to a good one with a good price
A long as the belt works, and the incline goes up and down, the the LCD works (isn't cracked, actually displays) then it's a fine product.
Don't get all crazy and want one with Bluetooth and iPad hookup and shyt, just get one that works and use the fukk out of it.
Trail running was in fact the correct answer here
Just got done trail running. 16 miles.