Hole 1
Par 4 · 420 yd
Plays north-east. 3 bunkers and water.
Green 32 yd deep, 28 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Bel Air South, Maryland, USA
18 holes, par 72, about 6,873 yards (6,285 metres) along the hole lines. The par 3s are 7, 9, 11 and 14. The par 5s are 2, 5, 12 and 18. The longest hole is the 5th at 565 yd, the shortest the 11th at 157 yd. The map shows 48 bunkers. Water is in play on holes 1, 2, 4, 11 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. Where a green's slopes are mapped, flip its card to see them.
Par 4 · 420 yd
Plays north-east. 3 bunkers and water.
Green 32 yd deep, 28 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 510 yd
Plays east. Dogleg left. 3 bunkers and water.
Green 36 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 343 yd
Plays north-east. 4 bunkers.
Green 23 yd deep, 32 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 442 yd
Plays east. Dogleg left. Water.
Green 35 yd deep, 38 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 565 yd
Plays south-west. Dogleg right. 5 bunkers.
Green 35 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 414 yd
Plays west. Dogleg left. 1 bunker.
Green 40 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 217 yd
Plays south-west. 3 bunkers.
Green 32 yd deep, 31 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 394 yd
Plays west. 3 bunkers.
Green 32 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 166 yd
Plays west. 2 bunkers.
Green 39 yd deep, 34 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 423 yd
Plays north-east. Dogleg left. 6 bunkers.
Green 36 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 157 yd
Plays north-east. 1 bunker and water.
Par 5 · 496 yd
Plays south-east. Dogleg left. 4 bunkers and water.
Green 28 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north-east. 4 bunkers.
Green 39 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 166 yd
Plays south. 1 bunker.
Green 34 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 389 yd
Plays south. 6 bunkers.
Green 33 yd deep, 33 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 381 yd
Plays west. Dogleg right. 1 bunker.
Green 31 yd deep, 35 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 457 yd
Plays west. 1 bunker.
Green 36 yd deep, 39 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 514 yd
Plays south-west.
Green 34 yd deep, 32 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.