Hole 1
Par 4 · 366 yd
Plays west. 1 bunker.
Green 26 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Hayfield, Minnesota, USA
18 holes, par 72, about 5,996 yards (5,483 metres) along the hole lines. The par 3s are 3, 6, 14 and 16. The par 5s are 4, 8, 10 and 18. The longest hole is the 18th at 523 yd, the shortest the 16th at 117 yd. The map shows 10 bunkers. Water is in play on holes 2, 3, 4, 5, 10, 11, 12 and 13.
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 west. 1 bunker.
Green 26 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 340 yd
Plays south-west. 1 bunker and water.
Green 26 yd deep, 26 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 142 yd
Plays south-east. Water.
Green 32 yd deep, 27 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 457 yd
Plays north. 1 bunker and water.
Green 34 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 294 yd
Plays east. 1 bunker and water.
Green 26 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 171 yd
Plays west. 2 bunkers.
Green 28 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 320 yd
Plays west. Dogleg right.
Green 26 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 484 yd
Plays east.
Green 31 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 322 yd
Plays south-east.
Green 28 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 460 yd
Plays south-west. Dogleg right. 1 bunker and water.
Green 24 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 312 yd
Plays south. 1 bunker and water.
Green 31 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 343 yd
Plays north. Water.
Green 22 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 366 yd
Plays north-east. Dogleg left. Water.
Green 31 yd deep, 28 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 161 yd
Plays west. 2 bunkers.
Green 28 yd deep, 22 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 398 yd
Plays south-west. Dogleg left.
Green 33 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 117 yd
Plays south. 2 bunkers.
Green 26 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north.
Green 27 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 523 yd
Plays east. Dogleg right. 1 bunker.
Green 31 yd deep, 30 yd wide. Falls 5% 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.