Hole 1
Par 4 · 387 yd
Plays south. 9 bunkers.
Green 35 yd deep, 39 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Lattingtown, New York, USA
18 holes, par 71, about 6,620 yards (6,053 metres) along the hole lines. The par 3s are 4, 8, 11 and 17. The par 5s are 3, 7 and 18. The longest hole is the 7th at 568 yd, the shortest the 17th at 131 yd. The map shows 110 bunkers. Water is in play on holes 10, 11, 12, 13 and 14.
Every hole, numbered, as the app draws it.
Each hole turned so it plays up the page, from the tee at the bottom. Every green's slopes are mapped: flip a card to see its green.
Par 4 · 387 yd
Plays south. 9 bunkers.
Green 35 yd deep, 39 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 363 yd
Plays north. 13 bunkers.
Green 27 yd deep, 30 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 432 yd
Plays south. 16 bunkers.
Green 34 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 173 yd
Plays north. 6 bunkers.
Green 36 yd deep, 33 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 402 yd
Plays north. 7 bunkers.
Green 45 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 482 yd
Plays north. 5 bunkers.
Green 42 yd deep, 35 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 568 yd
Plays north. 11 bunkers.
Green 40 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 186 yd
Plays south-west. 10 bunkers.
Green 38 yd deep, 37 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 434 yd
Plays north. 9 bunkers.
Green 38 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 308 yd
Plays north-east. 4 bunkers and water.
Green 47 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 226 yd
Plays south-west. 2 bunkers and water.
Green 82 yd deep, 39 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 349 yd
Plays south. 9 bunkers and water.
Green 33 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 427 yd
Plays north. Dogleg right. 8 bunkers and water.
Green 36 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 425 yd
Plays south. Dogleg right. 7 bunkers and water.
Green 35 yd deep, 27 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 366 yd
Plays south. 11 bunkers.
Green 37 yd deep, 38 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 457 yd
Plays south. 9 bunkers.
Green 34 yd deep, 31 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 131 yd
Plays north. 5 bunkers.
Green 28 yd deep, 30 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 502 yd
Plays south. 8 bunkers.
Green 33 yd deep, 30 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Lengths are measured along each hole's line on OpenStreetMap, so they can differ from the club's card. A bunker between two holes counts on both.
The app
On your iPhone and Apple Watch, Number & Line turns this map into a yardage book, with distances to the front, middle and back of each green from where you stand. You can plan each hole at home and get club advice from your own distances and the day's wind.
The app is coming soon to the App Store, and this course is already built for it.

Course map © OpenStreetMap contributors, under the Open Database Licence. See it on OpenStreetMap, where anyone can correct it. Green slopes: USGS 3D Elevation Program 1 m DEM (public domain). Our maps are open data too. Number & Line isn't connected with the club.