The math first

Double bogey on every hole is 108. Bogey on every hole is 90. To shoot 99 you need nine holes at bogey and nine at double, with no 8s and no 9s anywhere. Said another way: you're allowed to be mediocre on every single hole. You just can't be terrible on any of them.

Most golfers who shoot 105 play about twelve holes well enough to break 100 and then take a 9 on a par 4 and an 8 on a par 3. The round was lost on two holes. If you look back at your last few cards, I'd bet you find the same pattern.

Where the strokes actually go

A typical 100-shooter's round, roughly:

• Three to five penalty strokes. Balls in the water, out of bounds, lost in the desert or the woods. Each one is a stroke plus the shot you have to replay, so a lost tee shot is really two strokes gone. This is the biggest and easiest pile.
• Thirty-six to forty putts. Four or five three-putts a round, most of them from a first putt that finished six feet short or long.
• Four or five wasted shots around the green. The chip that goes three feet, the one that flies the green, the two attempts to get out of a bunker.
• Two or three hero shots that didn't come off. Driver out of the trees through a gap. A 3-wood over water from the rough. These turn a 6 into a 9.

None of that is about the swing. A 100-shooter can hit a 7-iron. They just hit the wrong shot at the wrong time, and then compound it.

Off the tee: hit the club that stays in play

If your driver goes out of bounds twice a round, you're spending four strokes on it. A 3-wood or a hybrid that goes 180 and stays on the planet is worth more than a driver that goes 230 and sometimes doesn't come back. Hit the driver only on wide holes with nothing to lose on either side. The lost distance costs you a club into the green. The lost ball costs you two strokes and your temper.

Aim at the fat part of the fairway, not at the flag. On a dogleg, aim at the corner, not over it. And tee it forward. The guideline is driver distance times 28 for a course length that fits you, so a 200-yard driver belongs on 5,600-yard tees. That's a real set of tees at most courses and you'll stop being embarrassed about using them the first time you break 100 from them. There's more on real distances in how far you should hit each golf club.

From the fairway: never try the hero shot

You've got 190 to the green over a pond. Your 3-wood goes 190 on a good day. The question isn't whether you can hit it. It's whether you hit it eight times out of ten, and the honest answer is no. Lay up to 100 yards with a 9-iron, wedge on, two putts, bogey. Bogey is a win. Bogey eighteen times is 90.

Same rule from the trees. Punch out sideways to the fairway with a 7-iron, even if there's a gap you can see. The gap closes more often than it opens.

And play for the middle of every green. Pin at the back right behind a bunker? Aim at the center. A 30-foot putt is better than a bunker shot every single time at this level.

Around the green: one shot to get on, two putts to get down

This is the fastest place to save strokes, because the fix is a decision rather than a skill.

• Putt from the fringe and from anywhere the grass is short enough. A bad putt goes six feet past. A bad chip goes over the green.
• Bump and run with an 8-iron when you can't putt. Chip it like a putt, land it on the green, let it roll. Low shots are easy. High shots are hard.
• Use the sand wedge only when you need to carry something: a bunker, long rough, a slope. Then open the face a little and swing with commitment. A tentative swing with a wedge is where the chunks and skulls come from.
• In a bunker, the goal is out. Not close. Out. Hit two inches behind the ball, swing through, and accept wherever it finishes on the green.

Putting: lag it, then tap it

A 100-shooter who gets down to 34 putts has saved four strokes without changing anything else. The whole job is speed. On anything over 15 feet, forget the hole and try to get the ball inside a three-foot circle around it. Spend half your putting practice hitting 30- and 40-footers to a tee stuck in the green, and the other half knocking in three-footers until you're bored. Nothing in between. Nobody breaks 100 by making more 12-footers. They do it by not three-putting.

Keep an honest card and find your leak

For five rounds, write down four things per hole: fairway hit or not, green hit or not, number of putts, and penalty strokes. At the end you'll know exactly where your strokes are going, and it'll be one or two places, not everywhere. Most people find it's penalty strokes off the tee and three-putts. Fix the biggest one first.

Count everything, including the mulligan on the first tee and the gimme you'd have missed. A 101 that's honest teaches you something. A 97 that isn't teaches you nothing. If you keep a handicap, you need the honest number anyway.

Practice that moves the number

At least half your practice time should be on the short game, and most of that on putting speed and chipping with an 8-iron. The other half goes to the range, and that time should be spent on one club you can keep in play off the tee and one iron you trust from 100 yards. Ten good 7-irons at a target teach more than a bucket of drivers at nothing. There's a whole way to run a session in how to practice at the driving range.

Find the one miss that costs you most

Most golfers who shoot 100 have one miss, and it's usually a slice off the tee. It's worth knowing exactly what it looks like, because then you can either fix it or plan around it, and planning around it is enough to break 100. Put your phone on a tripod behind you at the range, hit a bucket, and look at where the ball starts and how it curves across ten swings. The start and the curve tell you what the club face and the path were doing, and club face to path explains how to read them. If the miss is a slice, why you slice the golf ball covers the usual causes and how to see them on video.

Impact Reel cuts a range video into one clip per swing, so instead of scrubbing through twenty minutes of footage you get the ten swings side by side, each with a shot tracer you mark yourself. The pattern across a bucket is the thing to look for. A single swing can be anything.

Questions

What handicap is breaking 100?

Around a 25 to 28 Handicap Index, depending on the course. Roughly half of golfers who keep a handicap break 100 regularly, so you'd be joining the middle of the pack, not the elite.

How long does it take?

For most adults who play and practice a bit, one to two years from the first round. Some do it in a season. Some play for twenty years without doing it, almost always because they keep hitting driver on every hole and going for every green.

Should I just not hit the driver?

If it's costing you penalty strokes, yes, leave it in the bag for a month and see what happens to your score. Most people shoot lower. Bring it back one hole at a time once the 3-wood is boring.

Do I count mulligans and gimmes?

Not if you want the 99 to mean anything. Putt everything out. Play one ball. The first honest 99 feels better than ten dishonest 95s.

What should I do on a par 5?

Treat it as a par 6 you're trying to make in 5 or 6. Three easy shots to about 80 yards from the green, wedge on, two putts. That's a 6, which is fine, and it's a 5 more often than you'd think because the wedge sometimes finishes close.