OpenYardage
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In OpenStreetMap this club has more holes than a single round, or hands out numbers more than once. Which hole belongs to which course is not in the data: the holes carry no golf:course:name. Where that tag is present we separate the courses and show them one by one. Here all holes stand together, and whoever writes the book makes the choice. Tagging the holes in OpenStreetMap settles it for everyone.
The Duke Club is a golf course in the Netherlands. 18 holes are surveyed here from OpenStreetMap, 6,192 yd5,664 m of playing length in total. No hole has a par on record. The longest hole is number 18 at 509 yd465 m, the shortest number 7 at 118 yd108 m. Worked out in advance: the distance to the front and the back edge of the green for 17 holes as well as the carry distance over 21 bunkers and 5 water hazards for 14 holes. For 17 holes the elevation change between tee and green is on record as well.
Every hazard carries two numbers: the first reaches its near edge, the second carries past it. Drawn from OpenStreetMap, exactly as the app draws it.
Yardage book for The Duke Club. In OpenYardage every hole is a drawing, with distance rings, your own notes hole by hole and your club choice. Books by other players can be read, copied and printed as an A6 booklet.
OPEN THE COURSE IN THE APPReading needs no account. Writing your own book does.
Never played with a yardage book? What goes in one and how to read it
| TAG | MISSING ON | WHAT FOR |
|---|---|---|
| par | 18 of 18 holes | Club choice and expectation |
| handicap | 18 of 18 holes | Stroke index, net scoring |
In OpenStreetMap this belongs on the individual hole, not on the course; anyone who plays here can add it there for everyone: edit in FairwayMapper · look at the course in OpenStreetMap · open the editor right away.
All figures in yards, converted from the metre values in OpenStreetMap.All figures in metres. The length follows the line of play from the back tee to the middle of the green and takes a dogleg with it. Carry distances count from the tee to the near edge and to the far edge of the hazard.
| HOLE | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | OUT |
|---|---|---|---|---|---|---|---|---|---|---|
| LENGTH | 297 yd272 m | 413 yd378 m | 493 yd451 m | 383 yd350 m | 155 yd142 m | 459 yd420 m | 118 yd108 m | 366 yd335 m | 434 yd397 m | 3,118 yd2,853 m |
| GREEN DEPTH | 42 yd38 m | 38 yd35 m | 28 yd26 m | 40 yd37 m | 34 yd31 m | 36 yd33 m | · | 35 yd32 m | 37 yd34 m | · |
| ELEVATION | -1 yd-1 m | +4 yd+4 m | · | +2 yd+2 m | -1 yd-1 m | -4 yd-4 m | -6 yd-6 m | 0 yd0 m | +2 yd+2 m | · |
| HOLE | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN |
|---|---|---|---|---|---|---|---|---|---|---|
| LENGTH | 375 yd343 m | 121 yd111 m | 466 yd426 m | 367 yd336 m | 337 yd308 m | 340 yd311 m | 174 yd159 m | 385 yd352 m | 509 yd465 m | 3,074 yd2,811 m |
| GREEN DEPTH | 42 yd38 m | 31 yd28 m | 25 yd23 m | 44 yd40 m | 44 yd40 m | 31 yd28 m | 37 yd34 m | 34 yd31 m | 35 yd32 m | · |
| ELEVATION | 0 yd0 m | 0 yd0 m | +1 yd+1 m | +2 yd+2 m | 0 yd0 m | -1 yd0 m | +1 yd0 m | -1 yd-1 m | 0 yd0 m | · |
For 17 of the 18 holes the elevation profile is calculated. Hole 14 has the most cumulative elevation change along the played line: 6 yd (3 yd up, 3 yd down; 0 yd net tee to green).Hole 14 has the most cumulative elevation change along the played line: 6 m (3 m up, 3 m down; 0 m net tee to green). The basis are official elevation models (NL-AHN).
Two numbers to every hazard: the first reaches its near edge, the second carries past it. Land between the two and you are in it.
Bunker Red penalty area Water · yards from the teemetres from the tee · L left · R right
The basis is the map of this course in OpenStreetMap. Lengths, distances to the green edge and carry distances are calculated from it, not copied: every hole is projected onto its line of play and the arc length from the tee is counted. This replaces neither an official course measurement nor the club's scorecard. If you spot a mistake you can report it through the course page in the app, map it in FairwayMapper or correct it in OpenStreetMap straight away. Data as of 2026-09-14.
Do you know this course better than the map?
Ask a question, report a course that is missing, or say what should come next.
Do you work for The Duke Club?
The club material is still waiting on OpenStreetMap: the gap is listed above, under par. You know your course better than any stranger: in OpenStreetMap that is an hour of work.
edit in FairwayMapper · look at the course in OpenStreetMap · open the editor right away
As soon as it is there, the club material appears here: QR code, badge and the booklet to leave out.