MERACH Treadmill with 15/18% Auto Incline

A balanced iFIT treadmill for runners: a 16-inch pivoting touchscreen, -3% to 12% incline, 12 mph top speed and a 22 x 60 inch belt on a 4.25 CHP motor, per NordicTrack — and it folds.

For the no-subscription crowd: a folding, cushioned-deck runner with a 12 mph top speed, power incline and Sole's lifetime frame and motor warranty. Sole has refreshed the F80, so check which generation a listing ships before you buy.

NordicTrack's entry T Series runner: a 10-inch tilting touchscreen, 0–12 mph, 0–12% incline, a 20 x 60 inch deck and adjustable SelectFlex cushioning, and it folds. Best for walkers and moderate runners who want iFIT's guided workouts.

Best class content of any treadmill. Peloton's Cross Training Tread has a 24-inch HD swivel touchscreen, auto-incline that follows the instructor, 0–12.5 mph and 0–12.5% incline on 59 inches of running space, per Peloton. Good for runners who train to classes; the All-Access membership is what you are really buying.

Not a running deck, and included as the honest cheaper answer: if your mileage is walking and incline work rather than genuine running, this does that job at a fraction of a treadmill's price and footprint.