Hole 1
Par 4 · 374 yd
Plays west. 6 bunkers and water.
Green 25 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Duxbury, Massachusetts, USA
18 holes, par 71, about 6,461 yards (5,908 metres) along the hole lines. The par 3s are 3, 9, 12 and 17. The par 5s are 4, 13 and 15. The longest hole is the 13th at 566 yd, the shortest the 3rd at 125 yd. The map shows 59 bunkers. Water is in play on holes 1, 7, 11, 12, 13 and 14.
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 · 374 yd
Plays west. 6 bunkers and water.
Green 25 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 354 yd
Plays south-east. Dogleg left. 4 bunkers.
Green 31 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 125 yd
Plays south-west. 3 bunkers.
Green 26 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 509 yd
Plays north-west. 3 bunkers.
Green 26 yd deep, 26 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 308 yd
Plays west. 3 bunkers.
Green 32 yd deep, 23 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 319 yd
Plays east. 4 bunkers.
Green 24 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 354 yd
Plays north. Water.
Green 23 yd deep, 19 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 509 yd
Plays east. Dogleg right. 6 bunkers.
Green 37 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 220 yd
Plays east. 4 bunkers.
Green 30 yd deep, 31 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 335 yd
Plays north-west. Dogleg right. 4 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 · 371 yd
Plays west. 1 bunker and water.
Green 31 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 208 yd
Plays west. 2 bunkers and water.
Green 32 yd deep, 23 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 566 yd
Plays east. 4 bunkers and water.
Green 30 yd deep, 32 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 390 yd
Plays west. 3 bunkers and water.
Green 35 yd deep, 28 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 521 yd
Plays east. 7 bunkers.
Green 25 yd deep, 22 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 408 yd
Plays west. 3 bunkers.
Green 25 yd deep, 15 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 199 yd
Plays south. 3 bunkers.
Green 23 yd deep, 20 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 388 yd
Plays east. 10 bunkers.
Green 26 yd deep, 19 yd wide. Falls 3% 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.