Hole 1
Par 5 · 535 yd
Plays north-east. Dogleg right. 4 bunkers.
Green 37 yd deep, 31 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Hartsdale, New York, USA
18 holes, par 70, about 6,983 yards (6,385 metres) along the hole lines. The par 3s are 5, 9, 10 and 13. The par 5s are 1 and 14. The longest hole is the 14th at 583 yd, the shortest the 9th at 155 yd. The map shows 92 bunkers. Water is in play on holes 2, 4, 5, 6, 7, 8, 10, 11, 12, 14 and 15.
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 5 · 535 yd
Plays north-east. Dogleg right. 4 bunkers.
Green 37 yd deep, 31 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 422 yd
Plays north-west. Dogleg right. 2 bunkers and water.
Green 38 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 459 yd
Plays north-west. 4 bunkers.
Green 31 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 452 yd
Plays south. 3 bunkers and water.
Green 28 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 186 yd
Plays south-east. 3 bunkers and water.
Green 33 yd deep, 16 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 475 yd
Plays south-west. 10 bunkers and water.
Green 28 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 436 yd
Plays south-east. Dogleg right. 9 bunkers and water.
Green 26 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 360 yd
Plays north-east. 4 bunkers and water.
Green 32 yd deep, 25 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 155 yd
Plays west. 6 bunkers.
Green 26 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 194 yd
Plays north-west. 7 bunkers and water.
Green 38 yd deep, 32 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 401 yd
Plays north-east. 5 bunkers and water.
Green 33 yd deep, 27 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 441 yd
Plays north. 4 bunkers and water.
Green 30 yd deep, 27 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 221 yd
Plays south. 4 bunkers.
Green 33 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 583 yd
Plays south-east. Dogleg left. 20 bunkers and water.
Green 32 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 402 yd
Plays north-west. 9 bunkers and water.
Green 35 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 439 yd
Plays south-west. 7 bunkers.
Green 32 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 367 yd
Plays north-east. 7 bunkers.
Green 26 yd deep, 17 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 454 yd
Plays south-west. 4 bunkers.
Green 33 yd deep, 31 yd wide. Falls 3% 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.