Hole 1
Par 4 · 492 yd
Plays north-east. 6 bunkers.
Green 43 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Croton-on-Hudson, New York, USA
18 holes, par 70, about 7,094 yards (6,487 metres) along the hole lines. The par 3s are 2, 8, 11, 13 and 16. The par 5s are 6, 9 and 14. The longest hole is the 6th at 577 yd, the shortest the 11th at 185 yd. The map shows 90 bunkers. Water is in play on holes 3, 6, 8, 12 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 · 492 yd
Plays north-east. 6 bunkers.
Green 43 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 211 yd
Plays north-east. 3 bunkers.
Green 28 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 462 yd
Plays north-east. 8 bunkers and water.
Green 30 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 393 yd
Plays south-west. Dogleg right. 4 bunkers.
Green 40 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 454 yd
Plays east. Dogleg right. 3 bunkers.
Green 33 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 577 yd
Plays south. Dogleg left. 8 bunkers and water.
Green 33 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 387 yd
Plays north. 8 bunkers.
Green 28 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 258 yd
Plays east. 4 bunkers and water.
Green 33 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 573 yd
Plays south-west. Dogleg left. 6 bunkers.
Green 28 yd deep, 21 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 375 yd
Plays south. 8 bunkers.
Green 37 yd deep, 33 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 185 yd
Plays west. 1 bunker.
Green 36 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 495 yd
Plays north-east. Dogleg left. 10 bunkers and water.
Green 28 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 197 yd
Plays south-east. 3 bunkers.
Green 35 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 546 yd
Plays north. Dogleg right. 5 bunkers and water.
Green 28 yd deep, 17 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 443 yd
Plays south-west. Dogleg right. 8 bunkers.
Green 28 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 254 yd
Plays south. 3 bunkers.
Green 32 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 303 yd
Plays north. Dogleg left. 8 bunkers.
Green 33 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 489 yd
Plays south-west. 5 bunkers.
Green 27 yd deep, 30 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.