Hole 1
Par 4 · 385 yd
Plays west. 5 bunkers and water.
Green 26 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Billington Heights, New York, USA
18 holes, par 71, about 6,181 yards (5,652 metres) along the hole lines. The par 3s are 2, 4, 8, 13 and 15. The par 5s are 3, 7, 12 and 16. The longest hole is the 7th at 519 yd, the shortest the 8th at 152 yd. The map shows 34 bunkers. Water is in play on holes 1, 7, 8, 10, 11, 12, 16, 17 and 18.
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 · 385 yd
Plays west. 5 bunkers and water.
Green 26 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 154 yd
Plays north. 6 bunkers.
Green 24 yd deep, 43 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 445 yd
Plays east. Dogleg left. 3 bunkers.
Green 32 yd deep, 22 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 238 yd
Plays east. 1 bunker.
Green 32 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 328 yd
Plays west.
Green 25 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 371 yd
Plays west. 3 bunkers.
Green 31 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 519 yd
Plays south. Dogleg right. Water.
Green 39 yd deep, 22 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 152 yd
Plays north. Water.
Green 28 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 414 yd
Plays east. 3 bunkers.
Green 35 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 341 yd
Plays west. Dogleg right. 1 bunker and water.
Green 28 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays south. Dogleg left. 4 bunkers and water.
Green 26 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 433 yd
Plays north. Dogleg right. 2 bunkers and water.
Green 30 yd deep, 21 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 183 yd
Plays east. 3 bunkers.
Green 27 yd deep, 25 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 370 yd
Plays south-east. Dogleg left. 5 bunkers.
Green 33 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 173 yd
Plays north-east. 2 bunkers.
Green 28 yd deep, 19 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 475 yd
Plays north. 4 bunkers and water.
Green 45 yd deep, 46 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 449 yd
Plays south. Dogleg right. 2 bunkers and water.
Green 36 yd deep, 23 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 355 yd
Plays north. Dogleg left. 1 bunker and water.
Green 25 yd deep, 24 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.