This highly-rated treadmill from Urevo has a versatile two-in-one design: With the frame up, you can run up to 7.6 mph, and with the frame down, you can tuck it under your desk to walk up to 3.8 mph.

Boasting a 4.3 star rating from over 18,000 Amazon shoppers, this treadmill from Xterra is easy to use with a wide range of ...