The first consideration, of course, was the price, since this is a listing of affordable treadmills. We didn't want to choose anything that was over $400, since a treadmill that costs around $100 to the high $300s can fit into many people's budgets much easier. That often eliminates the need to lease and set up a payment plan for the machine, as many more expensive treadmills often require people to do.
We also tried to stick to a wide range of the added bells and whistles. Some machines on the list are simple, no-fuss models that are manually controlled, while others have a high-end feel, despite being under $400. However, everything on the list still has some form of display that tells you stats like time, distance, calories, or speed, and some come with additional reads like heart rate. Having readouts like these allows you to buy a more budget machine without the budget feel of guessing at your stats or having to set a timer yourself.
Beyond price and features, we also looked at machine construction. Proverbial points went to machines that have some sort of noise-dampening feature, added comfort on the run pad, or other features that helped with the overall usability of the machine. All machines have some type of folding or storage capacity for smaller spaces, too. Machines that could hold more weight also made the list, since treadmills shouldn't be just for one certain body type. Along similar lines, we made sure to include treadmills that had longer and wider running space, despite being smaller budget varieties.