Elevation Changes & Golf Club Distances   

How to club for uphill/downhill shots.    

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Uphill & Downhill Yardage Adjustments 

I often receive questions from golfers wanting to settle bets about something they have experienced on the golf course. I received one from a Lawyer who had an Engineering friend debating him over distance gained or lost hitting a 240 yd downhill Drive. 

He said, "My position is that the downhill drive hurt my distance, because the angle of approach to the fairway was much steeper hence I get less roll and less total distance despite more ball flight time.
Aron (my attorney) takes the opposite position, that in fact the extra 40 yards in the air more than compensates for the distance lost because of the angle. Can you settle this?"

My response, "I would agree with your engineer friend. In most cases, the downhill drop increases the carry by the greater amount than the steep angle of attack decreases roll after impact. On a horizontal hole, roll is about 10 to 15% of carry. Let's assume 10%. 240 yd carry + 24 yd roll = 264 yd.  On a downhill shot, a 40 yd drop would result in an additional carry of 30-40 yd, depending on the launch angle of the trajectory. The roll would be less, due to the steeper angle of approach. Thus, the distance would be: 240 + 30 yd carry + 15 yd = 285 yd.

Even if there was no roll, due to very damp fairways, the downhill drive would be longer. "

It's not always obvious to golfers that when hitting uphill, you need to hit more club and when hitting downhill, you need to hit less club. The question is how much more or less. Of course, it depends on many conditions. This page will discuss and deal with the effect of elevation changes alone (without wind, rain, cold, etc) so that you can improve your club selection and lower your score.

The trajectory of a golf ball is now well understood. It depends on ball velocity, trajectory, and spin as well as on air temperature, humidity and density. Below is a graphic of the trajectory of a golf ball hit with a driver, 5-iron, and 9-iron. Note that in the first part of each trajectory, the path of the ball steepens. This is due to the lift created by the spin of the ball. Note as well, that the trajectory of each is different at impact. The 9-iron's impact is the steepest and the Driver's impact is the least steep. Because of this, a Driver's range is more greatly affected by elevation changes than a 5-iron and the 5-iron's is more greatly affected than the 9-iron's. For every yard of fall, the Driver ball travels farther. If on a tee shot, for instance, the ball were to land 20 yards below the tee in elevation, it would travel horizontally 15 yards farther.

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I've used my golf ball trajectory computer model to calculate the actual distances uphill and downhill shots play for all the various clubs. You can instantly download my report.

The graph above was produced using my projectile model for a 6-iron. The green horizontal lines represent placements of the golf hole's green, relative to the position from which the ball is hit. If the hitting position and green are at the same elevation, the ball lands at about 162 yards. If hitting uphill to a green elevated by 20 yards, the ball lands on the green at a horizontal distance of about 141 yards. Thus, the effective distance of the 6-iron is 21 yards shorter. If hitting downhill to a green, 20 yards below, the ball lands ont he green at a horizontal distance of about 180 yards. Thus, the effective distance of the 6-iron is 18 yards longer. I've used my golf ball trajectory computer model to calculate the actual distances uphill and downhill shots play for all the various clubs. You can instantly download my report.

Learn how to club for uphill and downhill shots  

I've used my golf ball trajectory computer model to calculate the actual distances uphill and downhill shots play for all the various clubs. You can instantly download my report.

TOr, you can send me your normal club ranges (your clubprint) and I'll compute your unique amount of adjustment for every 5 yards of elevation change. 

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Apply This Science to Score Improvement

Using  accurate golf ball trajectory software, one can calculate how to adjust your club selection for changes in temperature, wind, altitude and elevation (uphill/downhill shots). See below. 

Temperature 

Warmer temperatures equate to longer carry distances. The difference between a cool morning and hot afternoon can be a full club.

You can provide me with yardages for each club in your bag. I'll input your values into a program I have written, and send you a template which will outline how different temperatures will change the real yardages for each club.

 

Temperature Distances

Wind

You can immediately download a copy "Reading Playing the Wind." I'll explain how you can easily measure the wind's speed (without using any kind of electronic device) and how much each mph of wind will affect your various club ranges.

You can provide me with yardages for each club in your bag. I'll input your values into a program I have written, and send you a template which will outline how different speed winds will change the real yardages for each club.

 

Wind

Altitude 

With increased altitude comes less dense air, meaning less friciton drag and longer carry distances.

You can provide me with yardages for each club in your bag. I'll input your values into a program I have written, and send you a template which will outline how altitudes will change the real yardages for each club..

 

Altitude Distances

Hitting Uphill or Downhill

You need to adjust your club selection when hitting uphill or downhill. But how much?

I've worked out how to estimate elevation change (uphill or downhill shots), and created a formula for how much shorter or longer a yardage plays. OR, send me the location of any golf hole along with your normal carry distances, and I'll work out how far the hole plays and what club to hit.     

 

Uphill/Downhill

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Hitting Uphill or Downhill

You need to adjust your club selection when hitting uphill or downhill. But how much?

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