Hole 1
Par 5 · 336 yd
Plays south-east. 6 bunkers and water.
Green 25 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Mackinac Island, Michigan, USA
9 holes, par 34, about 2,262 yards (2,068 metres) along the hole lines. The par 3s are 3, 6 and 7. The only par 5 is the 1st. The longest hole is the 1st at 336 yd, the shortest the 6th at 104 yd. The map shows 30 bunkers. Water is in play on holes 1, 2, 5, 7 and 8.
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 · 336 yd
Plays south-east. 6 bunkers and water.
Green 25 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 252 yd
Plays north-west. 3 bunkers and water.
Green 22 yd deep, 25 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 160 yd
Plays north-west. 5 bunkers.
Green 21 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 271 yd
Plays west. Dogleg right. 6 bunkers.
Green 19 yd deep, 24 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 273 yd
Plays east. Dogleg right. 2 bunkers and water.
Green 26 yd deep, 16 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 104 yd
Plays east. 4 bunkers.
Green 20 yd deep, 15 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 236 yd
Plays south-east. 7 bunkers and water.
Green 35 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 305 yd
Plays south-west. 2 bunkers and water.
Green 28 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 325 yd
Plays north-west. 6 bunkers.
Green 24 yd deep, 15 yd wide. Falls 7% 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.