Hole 1
Par 4 · 389 yd
Plays south. 4 bunkers.
Green 30 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Betsy Layne, Kentucky, USA
9 holes, par 35, about 2,960 yards (2,707 metres) along the hole lines. The par 3s are 4, 6 and 8. The par 5s are 3 and 5. The longest hole is the 3rd at 526 yd, the shortest the 8th at 118 yd. The map shows 21 bunkers. Water is in play on holes 7, 8 and 9.
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 · 389 yd
Plays south. 4 bunkers.
Green 30 yd deep, 23 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 318 yd
Plays south-east. 4 bunkers.
Green 25 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 526 yd
Plays north. Dogleg right. 3 bunkers.
Green 32 yd deep, 17 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 164 yd
Plays south-east. 4 bunkers.
Green 32 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 486 yd
Plays south. Dogleg left. 4 bunkers.
Green 33 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 194 yd
Plays west. 2 bunkers.
Green 23 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 322 yd
Plays north-west. 4 bunkers and water.
Green 27 yd deep, 22 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 118 yd
Plays north-east. 2 bunkers and water.
Green 23 yd deep, 27 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 444 yd
Plays north-east. 3 bunkers and water.
Green 27 yd deep, 25 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.