There are several synonyms for the phrase "distance around." The most common synonym is circumference, which refers to the distance around the outside of a circle or a curved object. Another synonym is perimeter, which refers to the distance around the outside of any shape. The word girth can also be used to describe the distance around the widest part of an object, such as a tree trunk or a person's waist. Additionally, the word boundary can be used to describe the distance around the outermost edge of a defined area or region. Finally, the word circuit can be used to describe the distance around a specific course or track.