Hole 1
Par 4 · 375 yd
Plays south-west. Dogleg left. 1 bunker and water.
Green 31 yd deep, 33 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Mountain Lake, Minnesota, USA
9 holes, par 36, about 3,147 yards (2,878 metres) along the hole lines. The par 3s are 4 and 7. The par 5s are 3 and 6. The longest hole is the 6th at 487 yd, the shortest the 7th at 160 yd. The map shows 14 bunkers. Water is in play on holes 1, 2, 3, 4, 5 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 · 375 yd
Plays south-west. Dogleg left. 1 bunker and water.
Green 31 yd deep, 33 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 307 yd
Plays west. 1 bunker and water.
Green 34 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 471 yd
Plays east. Dogleg left. 3 bunkers and water.
Green 22 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 176 yd
Plays north-east. Water.
Green 27 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays south. 2 bunkers and water.
Green 35 yd deep, 25 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 487 yd
Plays south-east. 3 bunkers.
Green 33 yd deep, 24 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 160 yd
Plays north. 1 bunker.
Green 31 yd deep, 19 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 367 yd
Plays north-west. 1 bunker.
Green 30 yd deep, 30 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 409 yd
Plays north. Dogleg left. 2 bunkers and water.
Green 30 yd deep, 24 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.