Hole 1
Par 4 · 446 yd
Plays south. 3 bunkers.
Green 32 yd deep, 23 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Decatur, Illinois, USA
18 holes, par 72, about 7,230 yards (6,611 metres) along the hole lines. The par 3s are 5, 8, 13 and 17. The par 5s are 2, 7, 14 and 18. The longest hole is the 18th at 612 yd, the shortest the 13th at 157 yd. The map shows 82 bunkers. Water is in play on holes 10, 11, 12, 14, 15, 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 · 446 yd
Plays south. 3 bunkers.
Green 32 yd deep, 23 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 597 yd
Plays south-west. Dogleg right. 6 bunkers.
Green 38 yd deep, 31 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 329 yd
Plays north-east. Dogleg left. 3 bunkers.
Green 33 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 467 yd
Plays north-west. Dogleg right. 4 bunkers.
Green 35 yd deep, 31 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 180 yd
Plays west. 4 bunkers.
Green 32 yd deep, 30 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 357 yd
Plays north-east. Dogleg left. 4 bunkers.
Green 36 yd deep, 31 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 562 yd
Plays south-east. Dogleg right. 9 bunkers.
Green 43 yd deep, 34 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 234 yd
Plays east. 4 bunkers.
Green 40 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 448 yd
Plays north. 5 bunkers.
Green 38 yd deep, 32 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 420 yd
Plays east. Dogleg left. 6 bunkers and water.
Green 42 yd deep, 30 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 394 yd
Plays west. 5 bunkers and water.
Green 38 yd deep, 27 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 466 yd
Plays north. 4 bunkers and water.
Green 40 yd deep, 35 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 157 yd
Plays east. 2 bunkers.
Green 30 yd deep, 28 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 566 yd
Plays south-east. 2 bunkers and water.
Green 45 yd deep, 47 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 428 yd
Plays north-west. Dogleg right. 2 bunkers and water.
Green 26 yd deep, 37 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 335 yd
Plays south. Dogleg right. 3 bunkers.
Green 31 yd deep, 34 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 229 yd
Plays west. 3 bunkers and water.
Green 40 yd deep, 35 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 612 yd
Plays south. 7 bunkers and water.
Green 39 yd deep, 31 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.