While the definition of a "long-distance bicycle ride" may vary from person to person, most cyclists would agree that anything over 50 miles qualifies. Of course, there are always exceptions to the rule. Some cyclists attempt to ride hundreds or even thousands of miles in a single trip, while others may only ride a few miles per day but do so for several weeks or months at a time. Ultimately, it's up to each individual cyclist to decide what constitutes a long-distance ride. However, most would agree that anything over 50 miles is a pretty good starting point.