Hole 1
Par 4 · 384 yd
Plays north-west. 2 bunkers.
Green 39 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Parole, Maryland, USA
18 holes, par 71, about 6,451 yards (5,899 metres) along the hole lines. The par 3s are 5, 8, 13, 15 and 17. The par 5s are 7, 12, 14 and 16. The longest hole is the 7th at 537 yd, the shortest the 5th at 151 yd. The map shows 42 bunkers. Water is in play on holes 2, 4, 5, 6, 8, 10, 11, 12, 13 and 16.
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 · 384 yd
Plays north-west. 2 bunkers.
Green 39 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 370 yd
Plays south-west. 2 bunkers and water.
Green 23 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 387 yd
Plays north. 5 bunkers.
Green 31 yd deep, 33 yd wide. Falls 8% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 398 yd
Plays south. 5 bunkers and water.
Green 32 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 151 yd
Plays north. 3 bunkers and water.
Green 26 yd deep, 33 yd wide. Falls 8% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 400 yd
Plays north. Dogleg left. 2 bunkers and water.
Green 43 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 537 yd
Plays south-east. 2 bunkers.
Green 28 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 182 yd
Plays south-east. 4 bunkers and water.
Green 27 yd deep, 37 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 388 yd
Plays south-east. Dogleg left. 3 bunkers.
Green 30 yd deep, 36 yd wide. Falls 9% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays west. Water.
Green 37 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 399 yd
Plays south-east. 3 bunkers and water.
Green 42 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 464 yd
Plays west. Dogleg right. Water.
Green 37 yd deep, 35 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 206 yd
Plays north. 2 bunkers and water.
Green 31 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 537 yd
Plays south-west. 4 bunkers.
Green 35 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 160 yd
Plays south. 3 bunkers.
Green 40 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 482 yd
Plays east. Dogleg right. Water.
Green 34 yd deep, 34 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 188 yd
Plays north-east. 3 bunkers.
Green 23 yd deep, 27 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 421 yd
Plays north-east. Dogleg right. 2 bunkers.
Green 31 yd deep, 42 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.