There is such a thing as a two person treadmill! This type of treadmill is designed for two people to use at the same time, side by side. It is a great option for couples or friends who want to workout together, and can help motivate each other to keep going. Two person treadmills usually have wider belts than single person treadmills, so there is plenty of room for both people to walk or run comfortably. Some even have features like built-in fans and speakers, so you can really make it into a fun experience. If you are looking for a way to get fit with a friend or loved one, then a two person treadmill might be just what you need.