Hole 1
Par 4 · 362 yd
Plays north. 6 bunkers.
Green 35 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Mason, Ohio, USA
18 holes, par 72, about 6,270 yards (5,733 metres) along the hole lines. The par 3s are 3, 7, 15 and 17. The par 5s are 2, 5, 11 and 14. The longest hole is the 5th at 528 yd, the shortest the 15th at 126 yd. The map shows 81 bunkers. Water is in play on holes 2, 4, 5, 6, 7, 8, 9, 12, 14, 15, 16 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 · 362 yd
Plays north. 6 bunkers.
Green 35 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 442 yd
Plays north. 6 bunkers and water.
Green 82 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 159 yd
Plays west. 2 bunkers.
Green 25 yd deep, 35 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 303 yd
Plays south-west. Dogleg right. 3 bunkers and water.
Green 21 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 528 yd
Plays north-east. Dogleg right. 9 bunkers and water.
Green 43 yd deep, 75 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays south. 7 bunkers and water.
Green 47 yd deep, 36 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 164 yd
Plays south. 2 bunkers and water.
Green 40 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 377 yd
Plays west. 8 bunkers and 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 · 517 yd
Plays south-east. Dogleg right. 7 bunkers and water.
Green 40 yd deep, 33 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 266 yd
Plays east. 6 bunkers.
Green 28 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 443 yd
Plays west. 2 bunkers.
Green 22 yd deep, 35 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 388 yd
Plays east. 6 bunkers and water.
Green 36 yd deep, 35 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 329 yd
Plays west. 6 bunkers.
Green 31 yd deep, 27 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 510 yd
Plays south. 4 bunkers and water.
Green 25 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 126 yd
Plays north. 1 bunker and water.
Green 23 yd deep, 16 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 363 yd
Plays north. 5 bunkers and water.
Green 27 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 200 yd
Plays north-west. 4 bunkers.
Green 36 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 377 yd
Plays east. Dogleg left. 6 bunkers and water.
Green 34 yd deep, 40 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.