Why 18 Holes in Golf? The History Behind the Standard Round

You’ve probably stood on the first tee at some point, looking out over a fairway that stretches into the distance. You know the drill: you play eighteen holes, walk miles, and hope your scorecard looks decent by the time you reach the clubhouse. But have you ever stopped to ask yourself why it’s exactly eighteen? Why not ten? Why not twenty-five?

It feels like an arbitrary number we just accept as law. After all, tennis matches don’t have a fixed number of games, and soccer doesn’t stop after thirty minutes unless someone says so. Yet in golf, eighteen is the golden rule. If you play nine, it’s considered a “half” round. If you play more, you’re doing extra credit.

The answer isn’t hidden in some complex mathematical formula or a divine decree from the gods of sport. It comes down to one specific place, one specific year, and a group of gentlemen who liked their drinks as much as they liked their game. To understand why we play eighteen holes today, we need to travel back to Scotland, specifically to a small town called St Andrews, located on the east coast of Fife.

The Old Course at St Andrews Sets the Precedent

In the early days of golf, there was no standard number of holes. Courses were built wherever land was available-usually linksland, which is sandy, windy, and close to the sea. Some courses had ten holes, others had twelve, and some even had nineteen. The game was fluid, and so were the layouts.

The Royal and Ancient Golf Club of St Andrews (R&A) is the governing body for golf outside the United States and Mexico, based in Scotland. In 1764, members of the Society of St Andrews Golfers (which later became the R&A) faced a problem with their course layout. The course originally had ten holes. Players would go out five holes and then come back in on five different holes, making a total of ten distinct playing surfaces but requiring twenty strokes to complete the circuit if you counted each side separately.

Hole number 17 and hole number 18 were incredibly short. They were barely worth playing as separate entities. So, the club decided to merge them into a single, longer hole. This reduced the total number of holes from twenty to eighteen. It wasn’t a decision made with future generations in mind; it was a practical fix for a course that needed tweaking. At the time, this change was purely local. Other clubs around Scotland continued to play whatever number of holes they had.

How St Andrews Became the Global Standard

So, why did everyone else copy St Andrews? Why didn’t the club in Edinburgh keep its nineteen holes, or the course in Musselburgh stick with its ten?

The influence of St Andrews grew because it was considered the "Home of Golf." The club was prestigious, and its members were influential. As the sport spread beyond Scotland to England and eventually to America, players looked to St Andrews for guidance on how things should be done. When new courses were being designed in the late 19th and early 20th centuries, architects used the St Andrews model as a blueprint.

By 1888, the Royal Liverpool Golf Club (also known as Hoylake) hosted the Open Championship. Their course had eighteen holes. Around the same time, major tournaments in the United States began adopting the eighteen-hole format. The United States Golf Association (USGA) is the official governing body of golf in the United States and Mexico. While they didn’t mandate eighteen holes immediately, the trend was undeniable. Professional golfers played eighteen-hole rounds in championships, and amateurs wanted to replicate that experience.

It became a self-reinforcing cycle. Courses were built with eighteen holes because that’s what the pros played. Pros played eighteen holes because that’s what the best courses had. By the mid-20th century, any course with fewer or more than eighteen holes was seen as incomplete or non-standard.

Is There Any Logic to the Number Eighteen?

If you strip away the history, does eighteen make sense as a number for a sport? Surprisingly, yes. There are practical reasons why eighteen works better than ten or twenty-five.

• Physical Endurance: Walking eighteen holes covers approximately four to six miles, depending on the length of the course and how much you wander off the path. This provides a solid workout without being exhausting for most recreational players. Ten holes might feel too short, leaving you wanting more. Twenty-five holes could lead to fatigue, slowing down the pace of play and increasing frustration.
• Time Management: An average round of eighteen holes takes about four hours. This fits neatly into a weekend schedule or a long lunch break. A nine-hole round takes two hours, which is great for a quick game, but it doesn’t provide the full immersion of the sport. Longer rounds can stretch into five or six hours, which becomes difficult for people with jobs or families.
• Strategic Variety: Eighteen holes allow for a diverse mix of par-3, par-4, and par-5 holes. This variety tests different aspects of a player’s game-driving, approach shots, chipping, and putting. With fewer holes, you might not encounter enough variety to truly test your skills. With more, the repetition can become monotonous.

Think of it like a meal. Appetizers are fun, but you want a main course. Dessert is nice, but too many courses leave you stuffed and uncomfortable. Eighteen holes is the perfect balance of challenge and enjoyment.

What About Nine-Hole Courses?

If eighteen is the standard, why do nine-hole courses exist? Aren’t they just half-measures?

Nine-hole courses serve a vital purpose in the golfing ecosystem. They are often cheaper to build and maintain, making them accessible to communities with limited space or budget. For players, they offer a quicker option. Maybe you only have two hours before you need to pick up the kids, or maybe you’re just starting out and don’t want to commit to a full day on the links.

Playing nine holes twice is technically equivalent to eighteen, but it lacks the continuity of a full round. You miss out on the rhythm of going out and coming back in. However, for casual play, nine holes are perfectly valid. Many public courses in the UK and US are nine-hole layouts precisely because they fit into urban environments where land is scarce.

Exceptions to the Rule

While eighteen is the norm, it’s not a universal law enforced by police officers with divot tools. There are still courses around the world that break the mold.

Prestwick Golf Club in Scotland famously has nineteen holes. It hosted the Open Championship multiple times before St Andrews took over the mantle. The club refused to change its layout to fit the emerging standard, preserving its historical integrity. Today, when you play Prestwick, you start on hole 1 and end on hole 19, skipping hole 10. It’s a unique experience that reminds us that golf’s traditions are deep-rooted but not immutable.

Does the Number of Holes Affect Skill?

Some argue that playing more holes makes you a better golfer. Is there truth to that?

Repetition helps, certainly. Playing eighteen holes gives you more opportunities to practice your swing, your putting, and your decision-making under pressure. However, quality matters more than quantity. Playing eighteen holes while distracted or rushing through your shots won’t improve your game as much as playing nine holes with intense focus.

Many coaches recommend shorter sessions with specific goals rather than full rounds. For example, spend twenty minutes working on your chip shots, then play nine holes focusing solely on your approach shots. This targeted practice can be more effective than blindly hitting balls for four hours.

The Future of Golf Course Design

As land becomes scarcer and attention spans shorten, will we see a move away from eighteen holes? Some modern designers are experimenting with shorter formats. Executive courses, which feature mostly par-3s, allow players to complete a round in under two hours. These courses are popular in suburban areas where space is limited.

There’s also the rise of alternative formats like Golfshot apps and GPS devices help players track their stats. Technology allows players to simulate full rounds in less time, or to play virtual rounds on famous courses like Augusta National without leaving their living room. While these innovations change how we engage with the game, the traditional eighteen-hole round remains the heart of golf culture.

For now, the legacy of St Andrews holds strong. We play eighteen holes because our ancestors did, and because it strikes the right balance between challenge, endurance, and enjoyment. It’s a tradition that connects us to centuries of players who have walked those same fairways, fought the same winds, and chased the same elusive perfect shot.