Hole 1
Par 4 · 336 yd
Plays south-east. 4 bunkers.
Green 25 yd deep, 31 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Boise, Idaho, USA
18 holes, par 72, about 6,285 yards (5,747 metres) along the hole lines. The par 3s are 4, 9, 13 and 17. The par 5s are 3, 6, 15 and 18. The longest hole is the 15th at 526 yd, the shortest the 13th at 139 yd. The map shows 28 bunkers. Water is in play on holes 7, 8, 9, 13, 15, 16 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 · 336 yd
Plays south-east. 4 bunkers.
Green 25 yd deep, 31 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 400 yd
Plays north-west. 2 bunkers.
Green 28 yd deep, 27 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 500 yd
Plays north-west. 3 bunkers.
Green 30 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 142 yd
Plays north-west. 3 bunkers.
Green 26 yd deep, 24 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 374 yd
Plays north.
Green 26 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 501 yd
Plays south-east. 3 bunkers.
Green 27 yd deep, 24 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 389 yd
Plays south-east. Dogleg left. 1 bunker and water.
Green 25 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 382 yd
Plays south-east. 3 bunkers and water.
Green 28 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 north-west. 1 bunker and water.
Green 23 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 372 yd
Plays north-west.
Green 27 yd deep, 23 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 360 yd
Plays south-east. Dogleg left. 1 bunker.
Green 25 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 369 yd
Plays south. 3 bunkers.
Green 26 yd deep, 24 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 139 yd
Plays north-west. 2 bunkers and water.
Green 23 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 374 yd
Plays north-west. 2 bunkers.
Green 31 yd deep, 30 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 526 yd
Plays north. 2 bunkers and water.
Green 31 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 394 yd
Plays south-east. Dogleg right. 1 bunker and water.
Green 26 yd deep, 25 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 176 yd
Plays south-east. 2 bunkers.
Green 31 yd deep, 22 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 383 yd
Plays south-east. 1 bunker and water.
Green 34 yd deep, 30 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.