Hole 1
Par 3 · 110 yd
Plays north. 2 bunkers and water.
Green 28 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Cerritos, California, USA
9 holes, par 29, about 1,406 yards (1,286 metres) along the hole lines. The par 3s are 1, 3, 5, 6, 7, 8 and 9. The longest hole is the 4th at 300 yd, the shortest the 5th at 92 yd. The map shows 16 bunkers. Water is in play on holes 1, 2, 8 and 9.
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 3 · 110 yd
Plays north. 2 bunkers and water.
Green 28 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 268 yd
Plays west. 5 bunkers and water.
Green 20 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 149 yd
Plays south. 2 bunkers.
Green 36 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 300 yd
Plays south. 4 bunkers.
Green 30 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 92 yd
Plays north. 2 bunkers.
Green 27 yd deep, 17 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 130 yd
Plays north. 3 bunkers.
Green 24 yd deep, 24 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 136 yd
Plays north. 2 bunkers.
Green 25 yd deep, 21 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 116 yd
Plays south-east. 3 bunkers and water.
Green 31 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 107 yd
Plays east. 1 bunker and water.
Green 32 yd deep, 16 yd wide. Falls 1% 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.