How to Do a Gapping Session in Golf

Knowing exactly how far each club in your bag flies is one of the fastest ways to lower your scores and play with unshakable confidence. It's the difference between hoping you’ve pulled the right club and knowing you have. This guide will walk you through how to do a professional-level gapping session, from how to prepare to how to analyze the results and put them into play.

What Is Gapping and Why Does It Matter?

A gapping session is the process of precisely measuring the carry distance of every club in your set, from your longest fairway wood to your most lofted wedge. This isn't about finding your single-best, once-in-a-lifetime shot with your 7-iron. It's about finding your realistic and repeatable carry distance - the number you can count on under pressure.

Think about it: have you ever stood over a shot to a green guarded by a front bunker, wondering if your 8-iron is enough to carry it? That small moment of doubt leads to tension and a tentative swing, often producing the very result you were afraid of. Gapping eliminates that doubt. It provides you with a clear, objective yardage chart that empowers you to make committed, confident swings.

The core benefits are simple but powerful:

• Smarter Club Selection: You'll stop "guessing" and start choosing clubs based on hard data.
• Consistent Yardage Gaps: You'll identify if there are big (or small) distance gaps between consecutive clubs, which highlights weak spots in your set makeup.
• Improved Course Management: Knowing your numbers is the foundation of good strategy. You can play to specific yardages, lay up to your favorite distances, and confidently attack flags.
• Increased Confidence: There's a profound sense of peace on the course when you eliminate unnecessary variables. Knowing your yardages is a big one.

What You'll Need for Your Gapping Session

To get the most out of your time, it's best to come prepared. You don't need a tour-pro setup, but a few things will help you get accurate, usable data.

• Your Full Set of Clubs: This sounds obvious, but bring every club you intend to have in your bag for the season.
• Your Preferred Golf Balls: It’s important to use the same model of ball you play on the course. A premium ball will fly differently than a distance or range ball, so consistency is a big factor for accurate numbers.
• Access to a Launch Monitor: This is the most important tool. Many driving ranges now have technology like Toptracer or TrackMan in their bays, which is a fantastic and accessible option. If you have a personal launch monitor (like a SkyTrak, Mevo+, or GCQuad), that's even better. These devices give you the "carry distance" number, which is what we need. Total distance can be misleading as it depends on rollout, which changes from course to course.
• A Way to Record Data: Grab a notebook and pen, use the notes app on your phone, or create a simple spreadsheet. You'll want to log the carry distance for every well-struck shot.
• Time and Energy: Plan for at least an hour, maybe 90 minutes. You don't want to rush this process. Come to the session well-rested and hydrated, ready to make a lot of good, representative swings.

The Gapping Session: A Step-by-Step Guide

Once you have your tools and are set up at the range, it's time to start gathering data. The key here is process. Resist the urge to just start hitting drivers. A systematic approach will give you much cleaner results.

Step 1: The Warm-Up

Never start a gapping session cold. Your first few swings are not a true representation of your standard on-course swing. Begin with your normal pre-round warm-up routine. Start with some light stretches, then move into some easy half-swings with a wedge. Gradually work your way up to full-speed swings, progressing through a few of your mid-irons. The goal is to get your body moving freely and your swing grooved before you start recording any numbers.

Step 2: Start with the Wedges

It's best to start with your scoring clubs. The yardage gaps between your pitching wedge, gap wedge, sand wedge, and lob wedge are often the most important - and the most inconsistent for most amateurs. A 15-yard gap between your irons is standard, but you might find a 20-yard gap between your PW and GW, leaving you with an awkward "in-between" distance on the course.

For each wedge, hit 10-12 shots. Your goal is to record the carry distance for every solidly struck shot. Be honest with yourself. If you hit one thin or chunky, ignore that result. It's not part of your average. We're looking for the typical result from a good swing, not your mis-hits. After hitting 10-12 good shots with your sand wedge, switch to your gap wedge and repeat, then move to your pitching wedge.

Step 3: Move Through the Irons

Once you've finished with your wedges, follow a logical progression up through your bag. If you came from the PW, move to the 9-iron, then the 8-iron, 7-iron, and so on. Continue the same method: hit 10-12 solid shots with each club and record the carry distance for each one. Discard the clear outliers - the bladed shots that go screaming low or the fat shots that go nowhere.

A vital tip: take breaks! Hitting over 100 golf balls can lead to fatigue, which will drain your swing speed and alter your distances. After you gap two or three clubs, take a minute. Walk around, have a sip of water, and stretch. This will help you maintain your swing quality throughout the entire session.

Step 4: Hybrids, Fairway Woods, and Driver

Finally, move to the top end of your bag. For your hybrids, fairway woods, and driver, remember that the goal is to find your stock distance, not your absolute maximum. Just because you juiced a drive 270 yards once, it doesn't mean your average is 270. We want the "fairway finder" number.

Swing at about 85-90% of your maximum power - the controllable swing you'd use on a tight par-4. Again, hit 10-12 representative shots and record the data. These clubs are more difficult to hit consistently, so be patient and focus on making a balanced, smooth swing.

Analyzing Your Data: How to Make Sense of the Numbers

Once the swinging is done, you'll have a list of numbers for each club. Now comes the part where you turn that raw data into actionable intelligence.

Step 1: Calculate Your Average Carry Distance

For each club, go through your list of 10-12 recorded shots. There are two good ways to find your final number. You can either calculate a simple average (add them all up and divide by the number of shots) or, for a more robust method, take a "trimmed mean." This means you cross out the single longest and single shortest shot from your list and then average the remaining numbers. This prevents one outlier from skewing the final result.

For example, if your 7-iron shots were: 151, 148, 155, 149, 147, 150, 146, 152. You might toss out the 155 and 146, then average the rest to get a solid 149.5 - call it 150 yards.

Step 2: Identify the Gaps

Create a chart with two columns: "Club" and "Carry Distance." List your clubs from shortest to longest and write down the final calculated average carry distance for each one.


SW: 88 yards
GW: 102 yards
PW: 115 yards
9i: 127 yards
8i: 139 yards
7i: 151 yards
...and so on.


Now, calculate the difference between each club. This is where you find the 'gaps'. A typical, healthy gap for irons is somewhere between 10-15 yards. For wedges, it can be 12-18 yards. For fairway woods and hybrids, it will be a bit larger.

Step 3: Look for Problems and Find Solutions

With your chart complete, you can now diagnose issues in your set composition.

• The Gap Vacuum: Is there a massive 20+ yard gap somewhere? A common spot is between the PW and SW if a golfer doesn't carry a gap wedge. If you see a huge window like that, you now know the exact yardage where you are most vulnerable on the course. This might be a sign you need to add a club, like a gap wedge or a different hybrid.
• The Cluster: Do you have two clubs that go nearly the same distance? It’s common to see a player’s 4-iron and 5-iron have only a 5-yard gap between them. This could be due to a swing issue, or it could mean their club lofts are too close together. This knowledge is power. It might lead you to get your lofts and lies checked and adjusted by a club fitter, or to replace one of those irons with a more versatile hybrid that fills a better spot in your distance matrix.

Final Thoughts

A proper gapping session transforms guesswork into knowledge on the golf course. Understanding your true carry distances with every club isn't just a technical exercise, it's a foundational step for making smarter decisions, building on-course confidence, and, ultimately, shooting lower scores.

Once you build your yardage chart, that data becomes your new on-course toolkit. The real confidence comes when you can apply this knowledge to every shot, and that is what we designed Caddie AI to help with. We created our app so you can combine your personal gapping data with smart, hole-specific strategy, helping you to confidently choose the right club and the best play for any situation the course throws at you.