Hole 1
Par 4 · 379 yd
Plays south-west. Dogleg left. 1 bunker.
Green 27 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Ijamsville, Maryland, USA
18 holes, par 72, about 6,739 yards (6,162 metres) along the hole lines. The par 3s are 3, 6, 14 and 16. The par 5s are 5, 9, 13 and 18. The longest hole is the 5th at 525 yd, the shortest the 3rd at 154 yd. The map shows 43 bunkers. Water is in play on holes 16 and 17.
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 · 379 yd
Plays south-west. Dogleg left. 1 bunker.
Green 27 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 425 yd
Plays west. 2 bunkers.
Green 26 yd deep, 33 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 154 yd
Plays north. 3 bunkers.
Green 39 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 366 yd
Plays south-west. 3 bunkers.
Green 39 yd deep, 39 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 525 yd
Plays north-west. 3 bunkers.
Green 37 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 200 yd
Plays south-east. 3 bunkers.
Green 27 yd deep, 23 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 292 yd
Plays east. Dogleg left. 2 bunkers.
Green 39 yd deep, 36 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 411 yd
Plays south-east. Dogleg right. 1 bunker.
Green 31 yd deep, 30 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 467 yd
Plays north-east. Dogleg left. 3 bunkers.
Green 35 yd deep, 42 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 423 yd
Plays west. Dogleg right. 3 bunkers.
Green 32 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 398 yd
Plays east. 5 bunkers.
Green 35 yd deep, 35 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 396 yd
Plays north-west. 2 bunkers.
Green 42 yd deep, 32 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 505 yd
Plays west. Dogleg right. 5 bunkers.
Green 31 yd deep, 27 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 156 yd
Plays west. 4 bunkers.
Green 38 yd deep, 26 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 494 yd
Plays south-east. 2 bunkers.
Green 44 yd deep, 27 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 215 yd
Plays north-west. 1 bunker and water.
Green 35 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 404 yd
Plays south-east. 2 bunkers and water.
Green 38 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 525 yd
Plays east. 4 bunkers.
Green 37 yd deep, 28 yd wide. Falls 4% 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.