Hole 1
Par 5 · 487 yd
Plays south. Dogleg right. 3 bunkers.
Green 32 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Arnold Parks, Iowa, USA
18 holes, par 72, about 6,473 yards (5,919 metres) along the hole lines. The par 3s are 3, 6, 12 and 14. The par 5s are 1, 4, 13 and 16. The longest hole is the 4th at 524 yd, the shortest the 12th at 126 yd. The map shows 19 bunkers. Water is in play on holes 3, 4, 5, 6, 9 and 11.
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 5 · 487 yd
Plays south. Dogleg right. 3 bunkers.
Green 32 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north.
Green 30 yd deep, 17 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 149 yd
Plays east. Water.
Green 30 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 524 yd
Plays south-east. Dogleg right. Water.
Green 27 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 423 yd
Plays north-west. Dogleg left. Water.
Green 38 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 159 yd
Plays south-west. 1 bunker and water.
Green 25 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 399 yd
Plays south-east. Dogleg right. 1 bunker.
Green 30 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays west. Dogleg left.
Green 32 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 411 yd
Plays north. 3 bunkers and water.
Green 24 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 336 yd
Plays north-east. Dogleg left. 2 bunkers.
Green 25 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 434 yd
Plays north. 2 bunkers and water.
Green 23 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 126 yd
Plays south. 1 bunker.
Green 26 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 513 yd
Plays south. Dogleg right. 2 bunkers.
Green 22 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 164 yd
Plays north-east. 1 bunker.
Green 23 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 327 yd
Plays north.
Green 28 yd deep, 33 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 501 yd
Plays south. Dogleg right. 1 bunker.
Green 24 yd deep, 28 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 290 yd
Plays north-west. 3 bunkers.
Green 22 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 396 yd
Plays south-west. Dogleg right. 2 bunkers.
Green 19 yd deep, 28 yd wide. Falls 4% 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.