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Mount Si Golf Course is a golf course in the United States. 18 holes are surveyed here from OpenStreetMap, 6,231 yd5,699 m of playing length in total, at par 72. The longest hole is number 12 at 563 yd515 m, the shortest number 4 at 143 yd131 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 4 bunkers and 12 water hazards for 12 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 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.
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 | 5 | 4 | 3 | 4 | 4 | 5 | 3 | 4 | 36 |
| STROKE INDEX | 9 | 1 | 11 | 17 | 7 | 5 | 3 | 15 | 13 | · |
| LENGTH | 350 yd320 m | 525 yd480 m | 342 yd313 m | 143 yd131 m | 366 yd335 m | 352 yd322 m | 488 yd446 m | 156 yd143 m | 337 yd308 m | 3,059 yd2,798 m |
| GREEN DEPTH | 22 yd20 m | 25 yd23 m | 22 yd20 m | 27 yd25 m | 28 yd26 m | 36 yd33 m | 24 yd22 m | 21 yd19 m | 24 yd22 m | · |
| ELEVATION | -2 yd-2 m | -2 yd-2 m | 0 yd0 m | 0 yd0 m | -1 yd-1 m | 0 yd0 m | +1 yd+1 m | -2 yd-2 m | -2 yd-2 m | · |
| HOLE | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | IN |
|---|---|---|---|---|---|---|---|---|---|---|
| PAR | 4 | 3 | 5 | 4 | 4 | 4 | 5 | 3 | 4 | 36 |
| STROKE INDEX | 8 | 16 | 2 | 6 | 10 | 12 | 4 | 18 | 14 | · |
| LENGTH | 301 yd275 m | 195 yd178 m | 563 yd515 m | 360 yd329 m | 332 yd304 m | 366 yd335 m | 529 yd484 m | 179 yd164 m | 347 yd317 m | 3,172 yd2,901 m |
| GREEN DEPTH | 24 yd22 m | 27 yd25 m | 25 yd23 m | 30 yd27 m | 32 yd29 m | 26 yd24 m | 22 yd20 m | 25 yd23 m | 38 yd35 m | · |
| ELEVATION | -3 yd-3 m | +1 yd+1 m | +2 yd+2 m | -3 yd-3 m | +2 yd+2 m | 0 yd0 m | -1 yd-1 m | +2 yd+2 m | -3 yd-3 m | · |
For 18 of the 18 holes the elevation profile is calculated. Hole 10 has the most cumulative elevation change along the played line: 9 yd (3 yd up, 6 yd down; -3 yd net tee to green).Hole 10 has the most cumulative elevation change along the played line: 9 m (3 m up, 6 m down; -3 m net tee to green). The basis are official elevation models (US-3DEP).
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 2026-09-18.
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