Hole 1
Par 4 · 352 yd
Plays south-west. Dogleg left. 10 bunkers.
Green 44 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Havre de Grace, Maryland, USA
18 holes, par 71, about 7,276 yards (6,653 metres) along the hole lines. The par 3s are 3, 7, 12 and 17. The par 5s are 2, 11 and 15. The longest hole is the 11th at 673 yd, the shortest the 3rd at 180 yd. The map shows 130 bunkers. Water is in play on holes 2, 9, 12, 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 · 352 yd
Plays south-west. Dogleg left. 10 bunkers.
Green 44 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 566 yd
Plays south. 8 bunkers and water.
Green 28 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 180 yd
Plays east. 8 bunkers.
Green 37 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 375 yd
Plays south-east. 7 bunkers.
Green 43 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 481 yd
Plays south-west. Dogleg left. 9 bunkers.
Green 46 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 410 yd
Plays north-east. 6 bunkers.
Green 31 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 196 yd
Plays north-west. 5 bunkers.
Green 39 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 551 yd
Plays north-west. Dogleg left. 8 bunkers.
Green 38 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 486 yd
Plays north. Dogleg right. 9 bunkers and water.
Green 39 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 396 yd
Plays south-east. Dogleg left. 8 bunkers.
Green 39 yd deep, 19 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 673 yd
Plays south. Dogleg left. 20 bunkers.
Green 39 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 190 yd
Plays north-east. 4 bunkers and water.
Green 42 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 527 yd
Plays north-west. Dogleg right. 5 bunkers.
Green 33 yd deep, 22 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 366 yd
Plays north. Dogleg right. 9 bunkers.
Green 27 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 527 yd
Plays south-west. Double dogleg. 3 bunkers and water.
Green 46 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 378 yd
Plays north-east. Dogleg right. 7 bunkers and water.
Green 39 yd deep, 19 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 189 yd
Plays north-west. 4 bunkers.
Green 32 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 432 yd
Plays south. Dogleg left. 2 bunkers and water.
Green 47 yd deep, 23 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.