Hole 1
Par 4 · 387 yd
Plays north. 3 bunkers and water.
Green 34 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Gahanna, Ohio, USA
18 holes, par 72, about 6,881 yards (6,292 metres) along the hole lines. The par 3s are 6, 8, 12, 15 and 17. The par 5s are 3, 7, 10, 14 and 18. The longest hole is the 18th at 632 yd, the shortest the 8th at 139 yd. The map shows 72 bunkers. Water is in play on holes 1, 3, 4, 5, 6, 7, 9, 10, 12, 14, 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 4 · 387 yd
Plays north. 3 bunkers and water.
Green 34 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 474 yd
Plays east. 2 bunkers.
Green 31 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 509 yd
Plays south-east. 3 bunkers and water.
Green 27 yd deep, 38 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 319 yd
Plays south. 5 bunkers and water.
Green 23 yd deep, 20 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 454 yd
Plays west. 4 bunkers and water.
Green 28 yd deep, 21 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 205 yd
Plays north-east. 2 bunkers and water.
Green 32 yd deep, 40 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 502 yd
Plays north-west. 6 bunkers and water.
Green 25 yd deep, 30 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 139 yd
Plays north-west. 2 bunkers.
Green 24 yd deep, 14 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 435 yd
Plays south. 3 bunkers and water.
Green 30 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 565 yd
Plays south-west. Dogleg left. 3 bunkers and water.
Green 26 yd deep, 32 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 372 yd
Plays north-east. 3 bunkers.
Green 23 yd deep, 38 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 214 yd
Plays south. 2 bunkers and water.
Green 33 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays west. Dogleg right. 3 bunkers.
Green 36 yd deep, 25 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 558 yd
Plays south. 5 bunkers and water.
Green 34 yd deep, 34 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 151 yd
Plays north-east. 5 bunkers.
Green 40 yd deep, 28 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 386 yd
Plays north-east. 5 bunkers.
Green 37 yd deep, 22 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 182 yd
Plays south. 3 bunkers and water.
Green 33 yd deep, 33 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 632 yd
Plays north. 3 bunkers and water.
Green 85 yd deep, 112 yd wide. Falls 1% 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; the course's name from OpenGolfAPI, under the same 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.