Hole 1
Par 4 · 442 yd
Plays north. 6 bunkers.
Green 35 yd deep, 33 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Belmont, Massachusetts, USA
18 holes, par 71, about 6,788 yards (6,207 metres) along the hole lines. The par 3s are 3, 5, 12 and 15. The par 5s are 4, 9 and 17. The longest hole is the 9th at 560 yd, the shortest the 12th at 173 yd. The map shows 65 bunkers. Water is in play on holes 5, 6, 8, 9 and 16.
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 · 442 yd
Plays north. 6 bunkers.
Green 35 yd deep, 33 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 361 yd
Plays south. 8 bunkers.
Green 38 yd deep, 33 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 189 yd
Plays north-west. 3 bunkers.
Green 35 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 534 yd
Plays south-east. 5 bunkers.
Green 27 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 210 yd
Plays west. 3 bunkers and water.
Green 35 yd deep, 28 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 388 yd
Plays north-west. 3 bunkers and water.
Green 36 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 392 yd
Plays east. 3 bunkers.
Green 32 yd deep, 28 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays west. Dogleg right. 4 bunkers and water.
Green 43 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 560 yd
Plays south-east. Dogleg right. 7 bunkers and water.
Green 32 yd deep, 25 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 362 yd
Plays north-west. 4 bunkers.
Green 35 yd deep, 22 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 406 yd
Plays north-west. 4 bunkers.
Green 32 yd deep, 26 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 173 yd
Plays south-east. 2 bunkers.
Green 31 yd deep, 32 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 396 yd
Plays east. 4 bunkers.
Green 33 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 413 yd
Plays south. 4 bunkers.
Green 31 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 220 yd
Plays north-east. 4 bunkers.
Green 34 yd deep, 31 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays south-west. Dogleg right. 3 bunkers and water.
Green 39 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 501 yd
Plays north. 4 bunkers.
Green 34 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 428 yd
Plays south. 6 bunkers.
Green 31 yd deep, 26 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. Pars are 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.