/ Updated / Source: TODAY Peloton is one of the most popular fitness companies in the U.S., offering a range of machines and classes, both online and in person at its studios in New York City, where you can actually meet some of the best Peloton instructors. Peloton started in 2012 with its stationary bike, which exploded in popularity during the COVID-19 pandemic, when congregating in large groups at places like gyms was discouraged.