OpenYardage
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Sea Golf Rönnäs is a golf course in Finland. 11 holes are surveyed here from OpenStreetMap, 3,377 yd3,087 m of playing length in total, at par 42. The longest hole is number 13 at 480 yd439 m, the shortest number 12 at 117 yd107 m. Worked out in advance: the distance to the front and the back edge of the green for 11 holes as well as the carry distance over 32 bunkers and 7 water hazards for 11 holes. For 11 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 Sea Golf Rönnäs. 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 each of the 11 holes drawn here. This is not a full round of 9, 18, 27 or 36: OpenStreetMap is missing at least one hole entirely.
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 | · | · | 3 | · | · | · | · | · | 7 |
| STROKE INDEX | 15 | · | · | 16 | · | · | · | · | · | · |
| LENGTH | 335 yd306 m | · | · | 149 yd136 m | · | · | · | · | · | 484 yd442 m |
| GREEN DEPTH | 37 yd34 m | · | · | 37 yd34 m | · | · | · | · | · | · |
| ELEVATION | -8 yd-8 m | · | · | +2 yd+2 m | · | · | · | · | · | · |
| HOLE | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN |
|---|---|---|---|---|---|---|---|---|---|---|
| PAR | 4 | 4 | 3 | 5 | 3 | 4 | 4 | 4 | 4 | 35 |
| STROKE INDEX | 12 | 7 | 17 | 6 | 18 | 10 | 11 | 5 | 14 | · |
| LENGTH | 341 yd312 m | 347 yd317 m | 117 yd107 m | 480 yd439 m | 166 yd152 m | 370 yd338 m | 363 yd332 m | 387 yd354 m | 322 yd294 m | 2,893 yd2,645 m |
| GREEN DEPTH | 45 yd41 m | 34 yd31 m | 22 yd20 m | 40 yd37 m | 51 yd47 m | 40 yd37 m | 27 yd25 m | 54 yd49 m | 44 yd40 m | · |
| ELEVATION | -1 yd-1 m | +4 yd+4 m | +2 yd+2 m | -5 yd-4 m | 0 yd0 m | -3 yd-2 m | +3 yd+3 m | -4 yd-4 m | +1 yd+1 m | · |
2 · 3 · 5 · 6 · 7 · 8 · 9 These 7 holes are missing in OpenStreetMap.
For 11 of the 11 holes the elevation profile is calculated. Hole 1 has the most cumulative elevation change along the played line: 10 yd (1 yd up, 9 yd down; -8 yd net tee to green).Hole 1 has the most cumulative elevation change along the played line: 8 m (0 m up, 8 m down; -8 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.
Do you know this course better than the map?
Ask a question, report a course that is missing, or say what should come next.
Do you work for Sea Golf Rönnäs?
The club material is still waiting on OpenStreetMap: 11 holes are drawn, not a full round of 9, 18, 27 or 36. You know your course better than any stranger: in OpenStreetMap that is an hour of work.
edit in FairwayMapper · look at the course in OpenStreetMap · open the editor right away
As soon as it is there, the club material appears here: QR code, badge and the booklet to leave out.