Hole 1
Par 5 · 544 yd
Plays south. 4 bunkers.
Green 35 yd deep, 42 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in St. Charles, Missouri, USA
18 holes, par 71, about 6,761 yards (6,182 metres) along the hole lines. The par 3s are 2, 6, 8, 14 and 17. The par 5s are 1, 5, 15 and 18. The longest hole is the 5th at 570 yd, the shortest the 8th at 186 yd. The map shows 55 bunkers. Water is in play on holes 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 5 · 544 yd
Plays south. 4 bunkers.
Green 35 yd deep, 42 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 210 yd
Plays east. 2 bunkers.
Green 45 yd deep, 36 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 381 yd
Plays north-west. 2 bunkers.
Green 40 yd deep, 28 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 398 yd
Plays north-west. 2 bunkers.
Green 43 yd deep, 20 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 570 yd
Plays south-east. 3 bunkers.
Green 30 yd deep, 43 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 198 yd
Plays north. 2 bunkers.
Green 38 yd deep, 35 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 427 yd
Plays north-west. 2 bunkers.
Green 35 yd deep, 28 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 186 yd
Plays north-east. 2 bunkers and water.
Green 34 yd deep, 37 yd wide. Falls 5% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 430 yd
Plays west. 2 bunkers and water.
Green 51 yd deep, 25 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 432 yd
Plays south. Dogleg left. 3 bunkers.
Green 38 yd deep, 34 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 320 yd
Plays west. Dogleg left. 4 bunkers.
Green 34 yd deep, 35 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 472 yd
Plays east. 1 bunker.
Green 44 yd deep, 31 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 344 yd
Plays south-west. Dogleg left. 4 bunkers.
Green 42 yd deep, 42 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 189 yd
Plays south-west. 2 bunkers.
Green 42 yd deep, 37 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 515 yd
Plays north. Dogleg right. 2 bunkers.
Green 47 yd deep, 34 yd wide. Falls 6% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays north-east. 3 bunkers.
Green 44 yd deep, 34 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 205 yd
Plays west. 1 bunker.
Green 47 yd deep, 37 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 522 yd
Plays north-east. 6 bunkers.
Green 51 yd deep, 38 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.