Hole 1
Par 4 · 246 yd
Plays north.
Green 15 yd deep, 16 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Mount Vernon, Iowa, USA
9 holes, par 35, about 2,461 yards (2,250 metres) along the hole lines. The par 3s are 8 and 9. The only par 5 is the 4th. The longest hole is the 4th at 469 yd, the shortest the 8th at 143 yd. The map shows 7 bunkers. Water is in play on the 4th.
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 · 246 yd
Plays north.
Green 15 yd deep, 16 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 290 yd
Plays south. Dogleg right. 2 bunkers.
Green 17 yd deep, 23 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 329 yd
Plays north. 1 bunker.
Green 22 yd deep, 16 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 469 yd
Plays south. Water.
Green 20 yd deep, 21 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 253 yd
Plays north-east. Dogleg right.
Green 21 yd deep, 19 yd wide. Falls 7% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 287 yd
Plays south-west. 2 bunkers.
Green 19 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 266 yd
Plays north-west.
Green 32 yd deep, 17 yd wide. Nearly flat overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 143 yd
Plays north. 2 bunkers.
Green 20 yd deep, 19 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 178 yd
Plays south.
Green 20 yd deep, 24 yd wide. Falls 5% 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.