The standard number of holes for a round of golf is eighteen. This configuration is virtually universal across professional and amateur play, establishing a consistent benchmark for course design and competitive scoring. The arrangement dictates the expected duration of a match and provides a standardized measure of a player’s skill against others, regardless of location.
The prevalence of this standard stems from historical convention established at the Old Course at St Andrews in Scotland. Initially, the course comprised 22 holes. However, modifications over time, including combining some short holes, resulted in the adoption of the 18-hole layout by 1764. This eventually solidified through growing popularity and acceptance by governing bodies, evolving to be the definitive, recognized measure.