Hole 1
Par 4 · 366 yd
Plays north. Dogleg left.
Green 31 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Chantilly, Virginia, USA
18 holes, par 72, about 6,764 yards (6,185 metres) along the hole lines. The par 3s are 4, 7, 11 and 14. The par 5s are 3, 5, 10 and 13. The longest hole is the 3rd at 601 yd, the shortest the 11th at 138 yd. The map shows 5 bunkers. Water is in play on holes 7, 10, 12, 16, 17 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 · 366 yd
Plays north. Dogleg left.
Green 31 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 363 yd
Plays south-east. Dogleg left.
Green 31 yd deep, 30 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 601 yd
Plays south-east.
Green 32 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 225 yd
Plays south.
Green 37 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 549 yd
Plays south. 3 bunkers.
Green 30 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 357 yd
Plays north. 2 bunkers.
Green 43 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 186 yd
Plays north. Water.
Green 33 yd deep, 34 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 351 yd
Plays north-west.
Green 30 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 327 yd
Plays east.
Green 31 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 531 yd
Plays south-east. Dogleg left. Water.
Green 35 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 138 yd
Plays north.
Green 39 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 488 yd
Plays south. Water.
Green 34 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 566 yd
Plays west.
Green 31 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 150 yd
Plays west.
Green 21 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 449 yd
Plays east.
Green 24 yd deep, 37 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 335 yd
Plays north-west. Dogleg right. Water.
Green 35 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 378 yd
Plays west. Water.
Green 34 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 401 yd
Plays north. Dogleg right. Water.
Green 35 yd deep, 26 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.