Hole 1
Par 4 · 406 yd
Plays south-west. Dogleg right.
Green 33 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Golf course in Huron, South Dakota, USA
18 holes, par 72, about 6,952 yards (6,357 metres) along the hole lines. The par 3s are 3, 8, 12 and 17. The par 5s are 5, 6, 11 and 16. The longest hole is the 16th at 544 yd, the shortest the 17th at 182 yd. The map shows 19 bunkers. Water is in play on holes 2, 5, 9, 11, 12, 13, 14, 15, 16 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 · 406 yd
Plays south-west. Dogleg right.
Green 33 yd deep, 21 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 407 yd
Plays north-west. Dogleg left. 2 bunkers and water.
Green 32 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 200 yd
Plays north-west. 1 bunker.
Green 36 yd deep, 21 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 412 yd
Plays south.
Green 34 yd deep, 15 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 515 yd
Plays north-west. Dogleg right. Water.
Green 17 yd deep, 19 yd wide. Falls 1% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 533 yd
Plays south-east. Dogleg left.
Green 27 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 422 yd
Plays north. Dogleg right. 3 bunkers.
Green 31 yd deep, 24 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 191 yd
Plays south-east. 1 bunker.
Green 36 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 397 yd
Plays east. 1 bunker and water.
Green 35 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 367 yd
Plays west. 1 bunker.
Green 27 yd deep, 20 yd wide. Falls 4% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 535 yd
Plays north. 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 · 197 yd
Plays south-west. 1 bunker and water.
Green 26 yd deep, 27 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 441 yd
Plays south. Dogleg right. 1 bunker and water.
Green 35 yd deep, 19 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 400 yd
Plays north. 1 bunker and water.
Green 33 yd deep, 21 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 385 yd
Plays north-east. Dogleg right. Water.
Green 31 yd deep, 17 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 5 · 544 yd
Plays south. Water.
Green 34 yd deep, 20 yd wide. Falls 3% overall. An arrow every 4 m here, every 2 m in the app.
Par 3 · 182 yd
Plays east.
Green 40 yd deep, 19 yd wide. Falls 2% overall. An arrow every 4 m here, every 2 m in the app.
Par 4 · 417 yd
Plays east. 4 bunkers and water.
Green 34 yd deep, 26 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.