Formula 18 Golf

Courses / The formula

The Formula 18 Golf Total Score

Experts + Golfers + The course + Architect + History

The short version

Every public golf course gets a score out of 100.

It’s built from what the experts, the golfers and the course itself tell us, and every input is cited on the course’s page.

A great architect and a real story earn bonus points. A missing one never costs a course anything.

The score is national. An 85 in Kansas means the same thing as an 85 in North Carolina.

The formula

Total Score = min(100, Core + Story)

Core = (E + G + C + A + T + D) × 100 / 85     when we know the architect
Core = (E + G + C + A + T)     × 100 / 75     when we don't
SymbolPartPoints
EExpert lists0–40
GGolfer stars0–20
CChallenge0–5
AAccess0–5
TThreads and blogs0–5
DArchitect3–10 (bonus)
StoryStory and heritage0–15 (bonus)

If we don’t know who designed a course, we don’t guess and we don’t punish it. We leave D out and score the course on everything else, stretched to the same 100 scale.

The parts

E — Expert lists (0–40)

E = 40 × (0.7 × P + 0.3 × L / 4)
P = 1 − (rank − 1) / list size          ← the course's best showing on any list
L = number of lists the course is on     (out of 4)

The lists:

  • Golf Digest Best in State
  • Golfweek Best Courses You Can Play
  • GOLF.com Best in State
  • Top 100 Golf Courses

How it reads:

  • #1 on a list of 25 gives P = 1.00.
  • #13 of 45 gives P = 0.73.
  • Not on any list scores 0 here. That’s honest: no expert put it on a list.

G — Golfer stars (0–20)

S = (stars × reviews + 3.5 × 10) / (reviews + 10)
G = 20 × clamp((S − 3) / 2, 0, 1)

Source: GolfPass golfer reviews.

What S does: every course starts as if it had ten extra 3.5-star reviews. A 5.0 from two reviews can’t beat a 4.6 from two hundred. The more reviews a course has, the more its real rating shows through.

Adjusted rating (S)Points
3.0 or lower0
4.010
5.020

C — Challenge (0–5)

C = 5 × clamp((slope − 113) / 32, 0, 1)

Source: the USGA slope from the longest tee.

SlopePoints
113 (average)0
145 or harder5
No rating on file2

A — Access (0–5)

Who can playPoints
Public, municipal, county5
Resort, university4
Semi-private3

Private clubs aren’t ranked at all. If you can’t book a tee time, it’s not on the list.

T — Threads and blogs (0–5)

One point for each independent, cited mention, up to 5.

Mentions come from golfers writing about the course on their own: forums, blogs and trip reports.

D — Architect (3–10, bonus)

D = 3 + 3.5 × V + 3.5 × R

V = ln(courses built) / ln(most courses built by any architect)
R = max( min(1, listed / 5),  min(1, (listed / built) / 0.25) )

What goes in:

  • Built is the architect’s career total of original designs, not how many we happen to have on file.
  • Listed is how many of their courses appear on Golf Digest’s America’s 100 Greatest, Golf Digest’s 100 Greatest Public and the state lists above.

How the three numbers work:

  • The 3 floor: anyone who designed a course starts at 3.
  • V (volume): uses a log scale, so going from 1 course to 10 counts as much as going from 10 to 100. The busiest architect in our data, Tom Bendelow at about 600 courses, sets the top.
  • R (recognition): an architect earns full credit either way: 5 or more listed courses, or a quarter of everything they built made a list. Big careers and small, brilliant ones both get their due.
ArchitectBuiltListedD
Donald Ross~400329.8
Pete Dye~200169.4
Tom Doak~40118.5
Mike Strantz937.7
Arthur Hills~20016.6
A one-course architect103.0

Story — Story and heritage (0–15, bonus)

Story = min(15, History + Heritage + Milestones + Era)
WhatPoints
The course’s history is researched and published on its page5
A published Heritage story5
Milestonesup to 5 total
· A renovation or restoration in the last 25 years2 (+1 by a recognized architect)
· Hosted a major event: pro tour, USGA, state or college championship2
· A documented first: first public course in the county, first integrated course and more1
· An award: Golf Digest or Golfweek Best New, design and “best of” honors2
Eracourse-building history
· Opened before 19303
· Opened 1930–19592
· 1960 or later, or unknown1

Era is a small nod to course-building history, so a brand-new course is never more than two points behind a classic. New courses catch up through milestones: awards, the events they host and the work done on them. Every milestone is cited, like everything else in the score.

Story is added after the 100-point scale, so it can lift a course but never sink one.

Worked example: Pinehurst No. 4 = 93

Illustration under the new Story bonus, which is rolling out now. Course pages show 92 until it’s live.

PartInputsPoints
EBest showing: Top 100 Golf Courses #9 of 107 → P = 0.925; on all 4 lists40 × (0.648 + 0.300) = 37.9
G4.9 stars from 21 reviews → S = 4.4520 × 0.72 = 14.5
CSlope 1385 × 0.78 = 3.9
AResort4
TNot yet collected0
DDonald Ross9.8
Core = (37.9 + 14.5 + 3.9 + 4 + 0 + 9.8) × 100 / 8582.5
StoryHistory published 5 + Gil Hanse renovation, 2018 → 3 + opened 1919 → 3+11
Total Score = 82.5 + 11 = 93.5 → 9393

The rules we hold ourselves to

  • Every number is cited. The course page shows each list, rank and star rating with a link to the source.
  • No paid placement. A course can’t buy points or position.
  • No curve across states. The score is national. On a state’s Top 10/50/100 page, we may also show how each course compares with that state’s #1.
  • Missing data never counts against a course. That covers an unknown architect, no story yet, or no threads collected yet.
  • The score moves when the evidence moves. New lists, new reviews and new stories update it automatically.

Coming next: ratings from Formula 18 Golf players themselves, and rounds played on Formula 18 Golf.

See it in action: Best Public Golf Courses in North Carolina →