Blue Mash Golf Course
Laytonsville, Maryland · 18 holes · par 71 · public. Designed by Arthur Hills.
A caddie's yardage book for every hole: plays-like distance from USGS lidar elevation, reach and carry numbers for every bunker and water hazard, green front, middle and back, which way each green falls, and the lay-up zone on par 5s. Distances are from the back tees along the mapped hole; for a shorter tee, take off the scorecard difference.
Course profile
- At about 520 ft the ball carries about 1% farther than at sea level, so a 150-yard shot plays like about 149. Golfers visiting from low elevation should expect to club down.
- Biggest climb: hole 8, where the green sits 19 ft above the tee and plays about 6 yards longer.
- Biggest drop: hole 10, where the green sits 25 ft below the tee and plays about 8 yards shorter.
- 11 greens tilt 2% or more. Each hole below says which side of the hole leaves an uphill putt.
Maps: tee at the bottom, green at the top. The dashed line is the mapped hole; the gold band is the lay-up zone; the arrow on the green points downhill.
Scorecard
| Hole | Par | Hcp | Gold | Blue | White | Green | Red |
|---|---|---|---|---|---|---|---|
| 1 | 4 | 3 | 449 | 424 | 389 | 334 | 331 |
| 2 | 4 | 9 | 452 | 428 | 401 | 331 | 329 |
| 3 | 4 | 1 | 478 | 453 | 426 | 361 | 359 |
| 4 | 3 | 13 | 206 | 190 | 172 | 138 | 123 |
| 5 | 5 | 7 | 580 | 533 | 508 | 439 | 437 |
| 6 | 3 | 17 | 160 | 143 | 127 | 105 | 100 |
| 7 | 4 | 11 | 392 | 386 | 301 | 282 | 225 |
| 8 | 4 | 15 | 310 | 283 | 259 | 249 | 207 |
| 9 | 5 | 5 | 548 | 522 | 500 | 490 | 423 |
| 10 | 4 | 14 | 398 | 367 | 337 | 328 | 293 |
| 11 | 3 | 16 | 217 | 204 | 189 | 180 | 142 |
| 12 | 5 | 8 | 500 | 476 | 446 | 438 | 386 |
| 13 | 3 | 18 | 177 | 160 | 130 | 121 | 107 |
| 14 | 4 | 12 | 378 | 360 | 334 | 326 | 277 |
| 15 | 4 | 10 | 423 | 400 | 373 | 365 | 285 |
| 16 | 4 | 2 | 463 | 445 | 430 | 410 | 405 |
| 17 | 3 | 4 | 192 | 177 | 158 | 97 | 95 |
| 18 | 5 | 6 | 562 | 551 | 521 | 444 | 442 |
Tees
| Tee | Yards | Rating | Slope | |
|---|---|---|---|---|
| Gold | Male | 6885 | 73 | 134 |
| Blue | Male | 6502 | 71.2 | 126 |
| Hybrid | Male | 6294 | 70.3 | 124 |
| White | Male | 6001 | 68.8 | 122 |
| White | Female | 6001 | 74.5 | 132 |
| Green | Male | 5438 | 66.8 | 118 |
| Green | Female | 5438 | 74.5 | 132 |
| Red | Female | 4966 | 68.7 | 120 |
Hole 1 · Par 4
- Plays like
- 450+3 ft
- Green · Gold tee
- 432 · 449 · 464front · middle · back
- Green size
- 33 × 26yards deep × wide
- Fairway
- 44 ydswide at 256
- Green slope
- 3%falls to the right
In play
- 2 bunkers right: 228 to reach, 259 to carry
- Bunker right: 293 to reach, 316 to carry
- Bunker front-right of the green
Playing notes
- Dogleg right at about 271 yards.
- Fairway bunkers on the right: 228 to reach, 316 to carry. Drives that finish short of 228 stay clear; otherwise the left side is the safer line off the tee.
- The fairway is about 44 yards wide at 256 and narrows to 22 at 306.
- The green is guarded on the right by bunkers; miss left.
- The green falls from left to right, about 3%. Finish on the right side of the hole for an uphill putt.
Hole 2 · Par 4
- Plays like
- 446-19 ft
- Green · Gold tee
- 436 · 452 · 468front · middle · back
- Green size
- 33 × 24yards deep × wide
- Fairway
- 52 ydswide at 258
- Green slope
- 1.5%falls to the front
In play
- 2 bunkers left: 217 to reach, 285 to carry
- Bunker right: 274 to reach, 294 to carry
- Bunker across the hole in front of the green: 431 to carry
- Bunker front-right of the green
Playing notes
- Plays about 6 yards shorter: the green sits 19 ft below the tee.
- Hazards on both sides of the fairway from 217 yards; a tee shot that finishes short of 217 keeps them out of play.
- The fairway is about 52 yards wide at 258 and narrows to 24 at 298.
- The green is guarded on the right by bunkers; miss left.
- Bunkers short of the green; take enough club to carry it.
- The green falls from back to front, about 1.5%. Finish on the front side of the hole for an uphill putt.
Hole 3 · Par 4
- Plays like
- 483+14 ft
- Green · Gold tee
- 460 · 478 · 497front · middle · back
- Green size
- 38 × 26yards deep × wide
- Fairway
- 36 ydswide at 256
- Green slope
- 3.5%falls to the front-left
In play
- 2 bunkers right: 231 to reach, 308 to carry
- Bunker front-left of the green
Playing notes
- Plays about 5 yards longer: the green sits 14 ft above the tee.
- Fairway bunkers on the right: 231 to reach, 308 to carry. Drives that finish short of 231 stay clear; otherwise the left side is the safer line off the tee.
- The fairway is about 36 yards wide at 256 and narrows to 29 at 286.
- The green is guarded on the left by bunkers; miss right.
- The green falls from back-right to front-left, about 3.5%. Finish on the front-left side of the hole for an uphill putt.
- The green is 38 yards deep: a back pin can play about 3 clubs more than a front pin.
Holes 4 to 18
4 · Par 35 · Par 56 · Par 37 · Par 48 · Par 49 · Par 510 · Par 411 · Par 312 · Par 513 · Par 314 · Par 415 · Par 416 · Par 417 · Par 318 · Par 5
The rest of this guide has the same caddie detail for every hole:
- 15 plays-like yardages
- 52 hazards with reach and carry
- 11 green slope reads
- 4 par-5 lay-up zones
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Hole maps, hazards and playing notes come from mapped course data and USGS 3DEP elevation (public domain), not a visit. Plays-like numbers use the Skitty caddie's rule of one yard per 3 ft of rise, from the longest tee; altitude uses 1.16% of carry per 1,000 ft. Tees, hazards and conditions change; check with the course before you play. Map data © OpenStreetMap contributors (ODbL 1.0) via OpenGolfAPI. Scorecard yardages and ratings as published. See a mistake? Email [email protected].