Hole 1
Par 5 · 539 yd
Plays north-west. Dogleg right. 5 bunkers.
Green 26 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Concord, Massachusetts, USA
18 holes, par 72, about 6,792 yards (6,211 metres) along the hole lines. The par 3s are 4, 8, 11 and 17. The par 5s are 1, 9, 14 and 18. The longest hole is the 18th at 548 yd, the shortest the 11th at 190 yd. The map shows 71 bunkers. Water is in play on holes 2, 6, 7, 8, 15, 16, 17 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 5 · 539 yd
Plays north-west. Dogleg right. 5 bunkers.
Green 26 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 421 yd
Plays south-west. Dogleg left. 5 bunkers and water.
Green 25 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 409 yd
Plays north-west. 5 bunkers.
Green 28 yd deep, 33 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 202 yd
Plays east. 4 bunkers.
Green 28 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 377 yd
Plays north-west. Dogleg right. 6 bunkers.
Green 28 yd deep, 22 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 339 yd
Plays north-east. Dogleg left. 2 bunkers and water.
Green 27 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 427 yd
Plays south-west. 4 bunkers and water.
Green 30 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 223 yd
Plays east. 3 bunkers and water.
Green 26 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 523 yd
Plays east. 7 bunkers.
Green 31 yd deep, 34 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 394 yd
Plays south-west. Dogleg left. 2 bunkers.
Green 25 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 190 yd
Plays north-east. 4 bunkers.
Green 28 yd deep, 30 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 396 yd
Plays south-west. 5 bunkers.
Green 27 yd deep, 26 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 290 yd
Plays west. Dogleg right. 6 bunkers.
Green 30 yd deep, 30 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 528 yd
Plays north-east. Dogleg left. 3 bunkers.
Green 30 yd deep, 28 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 343 yd
Plays south-west. 4 bunkers and water.
Green 28 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 449 yd
Plays north. 6 bunkers and water.
Green 31 yd deep, 32 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 195 yd
Plays north-east. 3 bunkers and water.
Green 36 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 548 yd
Plays south-east. Dogleg right. 7 bunkers and water.
Green 32 yd deep, 31 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.