Hole 1
Par 4 · 314 yd
Plays south. 5 bunkers and water.
Green 34 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Glen Ellyn, Illinois, USA
9 holes, par 36, about 3,248 yards (2,970 metres) along the hole lines. The par 3s are 4 and 8. The par 5s are 2 and 7. The longest hole is the 2nd at 522 yd, the shortest the 4th at 168 yd. The map shows 153 bunkers. Water is in play on holes 1, 2, 5, 8 and 9.
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 · 314 yd
Plays south. 5 bunkers and water.
Green 34 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 522 yd
Plays north-east. Dogleg right. 5 bunkers and water.
Green 33 yd deep, 25 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 384 yd
Plays south-west. 3 bunkers.
Green 34 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 168 yd
Plays south-west. 3 bunkers.
Green 32 yd deep, 23 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 375 yd
Plays west. 3 bunkers and water.
Green 39 yd deep, 36 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 404 yd
Plays north. 4 bunkers.
Green 39 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 510 yd
Plays north. 7 bunkers.
Green 27 yd deep, 28 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 207 yd
Plays south. 2 bunkers and water.
Green 33 yd deep, 31 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 365 yd
Plays south. 2 bunkers and water.
Green 32 yd deep, 27 yd wide. Falls 1% 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.