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Mount Si Golf Course is a golf course in the United States. 18 holes are surveyed here from OpenStreetMap, 5,699 m of playing length in total, at par 72. The longest hole is number 12 at 514 m, the shortest number 4 at 130 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 3 bunkers and 9 water hazards for 8 holes. For 18 holes the elevation change between tee and green is on record as well.
Yardage book for Mount Si Golf Course. 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.
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 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.
TABLE SCROLLS SIDEWAYS
| HOLE | PAR | STROKE INDEX | LENGTH | GREEN FRONT · MIDDLE · BACK | GREEN DEPTH | GREEN WIDTH | ELEVATION | WALK TO NEXT HOLE | CARRY DISTANCES FROM THE TEE |
|---|---|---|---|---|---|---|---|---|---|
| 1 OSM | 4 | 9 | 320 m | 312 · 321 · 332 m | 20 m | 17 m | -2 m | 76 m | Red penalty area 19 to 48 m right · Red penalty area 23 to 60 m left |
| 2 OSM | 5 | 1 | 481 m | 468 · 479 · 490 m | 23 m | 25 m | -2 m | 98 m | Red penalty area 470 to 509 m right · Red penalty area 479 to 509 m left |
| 3 OSM | 4 | 11 | 313 m | 301 · 311 · 322 m | 20 m | 23 m | 0 m | 94 m | Red penalty area 275 to 304 m left |
| 4 OSM | 3 | 17 | 130 m | 117 · 129 · 142 m | 25 m | 26 m | 0 m | 67 m | · |
| 5 OSM | 4 | 7 | 335 m | 321 · 333 · 347 m | 26 m | 22 m | -1 m | 117 m | · |
| 6 OSM | 4 | 5 | 322 m | 307 · 323 · 340 m | 33 m | 18 m | 0 m | 38 m | Red penalty area 34 to 143 m right |
| 7 OSM | 5 | 3 | 446 m | 434 · 447 · 456 m | 22 m | 26 m | +1 m | 60 m | · |
| 8 OSM | 3 | 15 | 143 m | 131 · 141 · 151 m | 19 m | 21 m | -2 m | 76 m | · |
| 9 OSM | 4 | 13 | 309 m | 299 · 310 · 321 m | 22 m | 23 m | -2 m | 69 m | Red penalty area 271 to 299 m left · Bunker 303 to 315 m left · Bunker 304 to 311 m right |
| 10 OSM | 4 | 8 | 275 m | 261 · 272 · 283 m | 22 m | 21 m | -3 m | 32 m | Red penalty area 189 to 234 m right |
| 11 OSM | 3 | 16 | 178 m | 165 · 177 · 190 m | 25 m | 18 m | +1 m | 160 m | · |
| 12 OSM | 5 | 2 | 514 m | 504 · 515 · 526 m | 23 m | 24 m | +2 m | 39 m | Bunker 507 to 516 m right |
| 13 OSM | 4 | 6 | 329 m | 316 · 329 · 342 m | 27 m | 25 m | -3 m | 109 m | · |
| 14 OSM | 4 | 10 | 304 m | 288 · 302 · 317 m | 29 m | 18 m | +2 m | 68 m | Red penalty area 201 to 230 m left |
| 15 OSM | 4 | 12 | 335 m | 322 · 335 · 346 m | 24 m | 17 m | 0 m | 90 m | · |
| 16 OSM | 5 | 4 | 484 m | 475 · 485 · 495 m | 20 m | 21 m | -1 m | 94 m | · |
| 17 OSM | 3 | 18 | 164 m | 151 · 164 · 174 m | 23 m | 18 m | +2 m | 81 m | · |
| 18 OSM | 4 | 14 | 317 m | 294 · 312 · 329 m | 35 m | 31 m | -3 m | · | · |
| HOLES 1 TO 9 | 36 | 2,799 m | |||||||
| HOLES 10 TO 18 | 36 | 2,900 m | |||||||
| 18 HOLES | 72 | 5,699 m |
For 18 of the 18 holes the elevation change between tee and green is calculated. Hole 12 climbs the most, by 2 m between tee and green. Hole 10 drops the most, by 3 m. The basis are official elevation models (US-3DEP).
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 or correct it in OpenStreetMap straight away. Data as of 2026-08-04.
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