What is the minimum length of the goal line in yards?

In soccer, the minimum length of the goal line is indeed 50 yards. This specification aligns with the established dimensions of a soccer field, which dictate that the length of the goal line must be at least half of the longer side of the field.

Typically, a regulation soccer field can vary in dimensions, with the longer side ranging from 100 to 130 yards. The goal line spans the width of the field, which is consistent across levels of play to ensure uniformity in gameplay and adherence to the Laws of the Game. A goal line of 50 yards, therefore, represents the minimum necessary for official play. This ensures that the goals, being located at either end of the goal line, can properly facilitate scoring within the context of the field's overall dimensions and mechanisms of play.