Hole 1
Par 3 · 106 yd
Plays east. 1 bunker and water.
Green 20 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in San Marcos, California, USA
18 holes, par 58, about 2,706 yards (2,474 metres) along the hole lines. The par 3s are 1, 2, 3, 5, 6, 7, 8, 9, 10, 12, 13, 14, 15 and 17. The longest hole is the 16th at 315 yd, the shortest the 17th at 80 yd. The map shows 23 bunkers. Water is in play on holes 1 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 · 106 yd
Plays east. 1 bunker and water.
Green 20 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 147 yd
Plays north-east. 2 bunkers.
Green 19 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 109 yd
Plays north-west. 2 bunkers.
Green 23 yd deep, 22 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 283 yd
Plays north-west. Dogleg right. 2 bunkers.
Green 19 yd deep, 17 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 110 yd
Plays south. 1 bunker.
Green 22 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 86 yd
Plays south-east. 1 bunker.
Green 22 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 152 yd
Plays west. 3 bunkers.
Green 23 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 113 yd
Plays south-east. 4 bunkers.
Green 21 yd deep, 15 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 110 yd
Plays south-west. 1 bunker and water.
Green 24 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 113 yd
Plays south-west.
Green 22 yd deep, 19 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 306 yd
Plays south-west. Dogleg left. 2 bunkers.
Green 25 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 107 yd
Plays south-west. 1 bunker.
Green 24 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 139 yd
Plays north. 3 bunkers.
Green 21 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 90 yd
Plays south. 2 bunkers.
Green 25 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 102 yd
Plays north. 1 bunker.
Green 23 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 315 yd
Plays north-east. 4 bunkers.
Green 21 yd deep, 19 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 80 yd
Plays west. 1 bunker.
Green 14 yd deep, 17 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 238 yd
Plays east. Dogleg right. 2 bunkers.
Green 23 yd deep, 21 yd wide. Falls 2% 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.