OpenYardage
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KoskiGolf is a golf course in Finland. 18 holes are surveyed here from OpenStreetMap, 6,651 yd6,081 m of playing length in total, at par 73. The longest hole is number 18 at 551 yd504 m, the shortest number 5 at 144 yd132 m. Worked out in advance: the distance to the front and the back edge of the green for 18 holes as well as the carry distance over 49 bunkers and 8 water hazards for 17 holes. For 18 holes the elevation change between tee and green is on record as well.
Every hazard carries two numbers: the first reaches its near edge, the second carries past it. Drawn from OpenStreetMap, exactly as the app draws it.
Yardage book for KoskiGolf. In OpenYardage every hole is a drawing, with distance rings, your own notes hole by hole and your club choice. Books by other players can be read, copied and printed as an A6 booklet.
OPEN THE COURSE IN THE APPReading needs no account. Writing your own book does.
Never played with a yardage book? What goes in one and how to read it
Par and stroke index are on record for every hole, so the card is complete. Not every club publishes its scorecard; this one is put together from the open data of OpenStreetMap and is not the club's official card. For a counting round the card from the pro shop is the one that applies.
All figures in yards, converted from the metre values in OpenStreetMap.All figures in metres. The length follows the line of play from the back tee to the middle of the green and takes a dogleg with it. Carry distances count from the tee to the near edge and to the far edge of the hazard. The stroke index ranks the holes by difficulty from 1 to 18 and decides where net strokes fall.
| HOLE | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | OUT |
|---|---|---|---|---|---|---|---|---|---|---|
| PAR | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 5 | 4 | 35 |
| STROKE INDEX | 6 | 12 | 8 | 14 | 18 | 2 | 10 | 4 | 12 | · |
| LENGTH | 419 yd383 m | 374 yd342 m | 362 yd331 m | 383 yd350 m | 144 yd132 m | 429 yd392 m | 174 yd159 m | 502 yd459 m | 397 yd363 m | 3,184 yd2,911 m |
| GREEN DEPTH | 34 yd31 m | 22 yd20 m | 27 yd25 m | 35 yd32 m | 38 yd35 m | 26 yd24 m | 24 yd22 m | 32 yd29 m | 28 yd26 m | · |
| ELEVATION | -4 yd-4 m | +5 yd+5 m | +5 yd+4 m | -4 yd-4 m | -4 yd-3 m | +1 yd+1 m | +3 yd+3 m | -5 yd-4 m | +6 yd+6 m | · |
| HOLE | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN |
|---|---|---|---|---|---|---|---|---|---|---|
| PAR | 4 | 5 | 4 | 4 | 3 | 5 | 4 | 4 | 5 | 38 |
| STROKE INDEX | 13 | 9 | 11 | 1 | 17 | 3 | 7 | 15 | 5 | · |
| LENGTH | 346 yd316 m | 456 yd417 m | 322 yd294 m | 412 yd377 m | 171 yd156 m | 506 yd463 m | 412 yd377 m | 291 yd266 m | 551 yd504 m | 3,467 yd3,170 m |
| GREEN DEPTH | 19 yd17 m | 30 yd27 m | 24 yd22 m | 40 yd37 m | 35 yd32 m | 28 yd26 m | 39 yd36 m | 21 yd19 m | 49 yd45 m | · |
| ELEVATION | -1 yd-1 m | +4 yd+4 m | -3 yd-3 m | -6 yd-5 m | -4 yd-4 m | +7 yd+6 m | -4 yd-4 m | -1 yd-1 m | 0 yd0 m | · |
For 18 of the 18 holes the elevation profile is calculated. Hole 12 has the most cumulative elevation change along the played line: 19 yd (8 yd up, 11 yd down; -3 yd net tee to green).Hole 12 has the most cumulative elevation change along the played line: 17 m (7 m up, 10 m down; -3 m net tee to green). The basis are official elevation models (FI-MML).
Two numbers to every hazard: the first reaches its near edge, the second carries past it. Land between the two and you are in it.
Bunker Red penalty area Water · yards from the teemetres from the tee · L left · R right
The basis is the map of this course in OpenStreetMap. Lengths, distances to the green edge and carry distances are calculated from it, not copied: every hole is projected onto its line of play and the arc length from the tee is counted. This replaces neither an official course measurement nor the club's scorecard. If you spot a mistake you can report it through the course page in the app, map it in FairwayMapper or correct it in OpenStreetMap straight away. Data as of 2026-09-14.
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