Hole 1
Par 4 · 383 yd
Plays north-east. 4 bunkers.
Green 20 yd deep, 32 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Baltimore, Maryland, USA
18 holes, par 71, about 5,725 yards (5,235 metres) along the hole lines. The par 3s are 3, 4, 11 and 15. The par 5s are 9, 14 and 18. The longest hole is the 18th at 546 yd, the shortest the 11th at 173 yd. The map shows 52 bunkers. It shows no water in play.
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 · 383 yd
Plays north-east. 4 bunkers.
Green 20 yd deep, 32 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 316 yd
Plays south-west. 4 bunkers.
Green 31 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 198 yd
Plays north-east. 1 bunker.
Green 25 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 212 yd
Plays south. 4 bunkers.
Green 26 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 385 yd
Plays south-east. 3 bunkers.
Green 28 yd deep, 19 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 284 yd
Plays west. 3 bunkers.
Green 28 yd deep, 23 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 322 yd
Plays east. 2 bunkers.
Green 24 yd deep, 20 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 282 yd
Plays north-west. Dogleg left. 5 bunkers.
Green 31 yd deep, 25 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 486 yd
Plays south-west. Dogleg right. 4 bunkers.
Green 23 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 315 yd
Plays west. Dogleg left. 2 bunkers.
Green 30 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 173 yd
Plays north-east. 2 bunkers.
Green 28 yd deep, 24 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 277 yd
Plays west. 1 bunker.
Green 31 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 347 yd
Plays south-west. 5 bunkers.
Green 28 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 442 yd
Plays north. 2 bunkers.
Green 31 yd deep, 32 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 194 yd
Plays east. 1 bunker.
Green 31 yd deep, 24 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 308 yd
Plays south-west. 3 bunkers.
Green 28 yd deep, 23 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 255 yd
Plays north-east. Dogleg left. 3 bunkers.
Green 28 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 546 yd
Plays south-east. Dogleg left. 3 bunkers.
Green 32 yd deep, 28 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. 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.