Hole 1
Par 5 · 504 yd
Plays south. Dogleg left. 3 bunkers.
Green 35 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Keystone, California, USA
18 holes, par 72, about 6,622 yards (6,055 metres) along the hole lines. The par 3s are 5, 8, 14 and 16. The par 5s are 1, 6, 10 and 15. The longest hole is the 6th at 562 yd, the shortest the 5th at 141 yd. The map shows 81 bunkers. It shows no water in play.
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 5 · 504 yd
Plays south. Dogleg left. 3 bunkers.
Green 35 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 394 yd
Plays south-east. Dogleg left. 4 bunkers.
Green 35 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 303 yd
Plays north. 6 bunkers.
Green 28 yd deep, 30 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 411 yd
Plays north. 4 bunkers.
Green 35 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 141 yd
Plays south. 3 bunkers.
Green 31 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 562 yd
Plays south. 6 bunkers.
Green 28 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north-west. 5 bunkers.
Green 35 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 176 yd
Plays south-east. 2 bunkers.
Green 33 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 393 yd
Plays north. 4 bunkers.
Green 34 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 498 yd
Plays south. Dogleg left. 8 bunkers.
Green 32 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 342 yd
Plays south. Dogleg right. 5 bunkers.
Green 28 yd deep, 31 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 379 yd
Plays east. 6 bunkers.
Green 34 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 402 yd
Plays west. Dogleg right. 6 bunkers.
Green 27 yd deep, 32 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 177 yd
Plays north-west. 3 bunkers.
Green 33 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 468 yd
Plays north-west. 5 bunkers.
Green 35 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 200 yd
Plays north-east. 4 bunkers.
Green 30 yd deep, 32 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 420 yd
Plays south. 7 bunkers.
Green 31 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 433 yd
Plays north. Dogleg right. 7 bunkers.
Green 34 yd deep, 25 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.