OpenYardage
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Mahon Golf Club is a golf course in Ireland. 18 holes are surveyed here from OpenStreetMap, 5,619 yd5,140 m of playing length in total. No hole has a par on record. The longest hole is number 17 at 482 yd441 m, the shortest number 6 at 120 yd110 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 24 bunkers for 13 holes. For 18 holes the elevation change between tee and green is on record as well.
Yardage book for Mahon Golf Club. Every hole is a drawing, and next to it the green with its distance rings, plus your own notes hole by hole and your club choice. Books by other players can be read, copied and printed as an A6 booklet. The button below opens the whole course, hole by hole.
SEE ALL 18 HOLESReading needs no account. Writing your own book does.
Never played with a yardage book? What goes in one and how to read it
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.
| TAG | MISSING ON | WHAT FOR |
|---|---|---|
| par | 18 of 18 holes | Club choice and expectation |
| handicap | 18 of 18 holes | Stroke index, net scoring |
In OpenStreetMap this belongs on the individual hole, not on the course; anyone who plays here can add it there for everyone: edit in FairwayMapper · look at the course in OpenStreetMap · open the editor right away.
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.
| HOLE | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | OUT |
|---|---|---|---|---|---|---|---|---|---|---|
| LENGTH | 364 yd333 m | 414 yd379 m | 363 yd332 m | 143 yd131 m | 371 yd339 m | 120 yd110 m | 394 yd360 m | 143 yd131 m | 180 yd165 m | 2,492 yd2,280 m |
| GREEN DEPTH | 28 yd26 m | 34 yd31 m | 32 yd29 m | 27 yd25 m | 32 yd29 m | 30 yd27 m | 32 yd29 m | 24 yd22 m | 31 yd28 m | · |
| ELEVATION | +10 yd+9 m | -10 yd-10 m | +14 yd+13 m | -15 yd-14 m | +9 yd+8 m | -11 yd-10 m | +3 yd+3 m | +4 yd+4 m | +8 yd+7 m | · |
| HOLE | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN |
|---|---|---|---|---|---|---|---|---|---|---|
| LENGTH | 352 yd322 m | 469 yd429 m | 394 yd360 m | 351 yd321 m | 299 yd273 m | 249 yd228 m | 379 yd347 m | 482 yd441 m | 152 yd139 m | 3,127 yd2,860 m |
| GREEN DEPTH | 25 yd23 m | 32 yd29 m | 24 yd22 m | 33 yd30 m | 26 yd24 m | 33 yd30 m | 30 yd27 m | 33 yd30 m | 32 yd29 m | · |
| ELEVATION | -7 yd-7 m | -1 yd0 m | +2 yd+2 m | +3 yd+2 m | -4 yd-4 m | -5 yd-5 m | +2 yd+1 m | -5 yd-5 m | +3 yd+3 m | · |
For 18 of the 18 holes the elevation profile is calculated. Hole 4 has the most cumulative elevation change along the played line: 15 yd (0 yd up, 15 yd down; -15 yd net tee to green).Hole 4 has the most cumulative elevation change along the played line: 14 m (0 m up, 14 m down; -14 m net tee to green). The basis are official elevation models (EU-DEM).
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 2026-09-25.
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 Mahon Golf Club?
The club material is still waiting on OpenStreetMap: the gap is listed above, under par. 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.