Hole 1
Par 4 · 302 yd
Plays south-west. 3 bunkers.
Green 40 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Castle Park, California, USA
18 holes, par 72, about 5,209 yards (4,763 metres) along the hole lines. The par 3s are 3, 6, 11 and 13. The par 5s are 2, 8, 14 and 16. The longest hole is the 14th at 441 yd, the shortest the 3rd at 92 yd. The map shows 61 bunkers. Water is in play on holes 8 and 12.
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 · 302 yd
Plays south-west. 3 bunkers.
Green 40 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 353 yd
Plays south-west. 3 bunkers.
Green 32 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 92 yd
Plays north-east. 2 bunkers.
Green 31 yd deep, 22 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 318 yd
Plays east. 3 bunkers.
Green 37 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 318 yd
Plays west. 3 bunkers.
Green 36 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 114 yd
Plays south-west. 3 bunkers.
Green 30 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 250 yd
Plays east. 6 bunkers.
Green 28 yd deep, 31 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 420 yd
Plays south-east. Dogleg right. 2 bunkers and water.
Green 36 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 327 yd
Plays north. 5 bunkers.
Green 27 yd deep, 34 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north. Dogleg left. 4 bunkers.
Green 26 yd deep, 34 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 120 yd
Plays south. 5 bunkers.
Green 35 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 313 yd
Plays west. Dogleg left. 3 bunkers and water.
Green 34 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 145 yd
Plays north. 3 bunkers.
Green 36 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 441 yd
Plays south-west. Dogleg right. 8 bunkers.
Green 21 yd deep, 46 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 288 yd
Plays east. 3 bunkers.
Green 32 yd deep, 35 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 404 yd
Plays east. 5 bunkers.
Green 34 yd deep, 33 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 300 yd
Plays north. 3 bunkers.
Green 37 yd deep, 22 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 289 yd
Plays north. 3 bunkers.
Green 33 yd deep, 26 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.