Hole 1
Par 4 · 266 yd
Plays west. Dogleg left. 5 bunkers and water.
Green 28 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in George Mason, Virginia, USA
18 holes, par 71, about 5,424 yards (4,960 metres) along the hole lines. The par 3s are 2, 6, 10 and 13. The par 5s are 5, 9 and 12. The longest hole is the 5th at 511 yd, the shortest the 13th at 100 yd. The map shows 43 bunkers. Water is in play on holes 1, 3, 7, 11, 12, 14 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 · 266 yd
Plays west. Dogleg left. 5 bunkers and water.
Green 28 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 174 yd
Plays north. 3 bunkers.
Green 33 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 317 yd
Plays east. 1 bunker and water.
Green 32 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 341 yd
Plays west. 2 bunkers.
Green 26 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 511 yd
Plays north. 2 bunkers.
Green 28 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 129 yd
Plays south-west. 2 bunkers.
Green 30 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 319 yd
Plays south. 3 bunkers and water.
Green 35 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 266 yd
Plays south. 2 bunkers.
Green 32 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 412 yd
Plays east. Dogleg left. 4 bunkers.
Green 21 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 124 yd
Plays south-west. 3 bunkers.
Green 40 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 277 yd
Plays south-west. 3 bunkers and water.
Green 17 yd deep, 37 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 471 yd
Plays north-west. Dogleg left. 3 bunkers and water.
Green 28 yd deep, 21 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 100 yd
Plays north-west. 4 bunkers.
Green 31 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 360 yd
Plays north. 1 bunker and water.
Green 33 yd deep, 33 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 232 yd
Plays north. 1 bunker.
Green 30 yd deep, 37 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 308 yd
Plays south. 4 bunkers.
Green 39 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 414 yd
Plays south. 1 bunker and water.
Green 35 yd deep, 27 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 402 yd
Plays east. Dogleg left. 4 bunkers.
Green 19 yd deep, 25 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.