| distance | reference number | name | latitude | longitude |
| 507.9 | 121 | Ayock Point, Washington | 47.5083 | -122.053 |
| 519.7 | 916 | Ellsworth, Washington | 45.6 | -122.55 |
| 522.2 | 768 | Des Moines, East Passage, Washington | 47.4 | -122.328 |
| 523.9 | 838 | Duwamish Waterway, Eighth Ave. South, Seattle, Wash | 47.535 | -122.322 |
| 525.3 | 2805 | Sitcum Waterway, Tacoma, Washington | 47.2667 | -122.413 |
| 525.3 | 3019 | Tacoma, Commencement Bay, Washington | 47.2667 | -122.413 |
| 525.9 | 945 | Everett, Washington | 47.98 | -122.223 |
| 526.0 | 2725 | Seattle, Puget Sound, Washington | 47.605 | -122.338 |
| 526.5 | 1772 | Marysville, Quilceda Creek, Washington | 48.045 | -122.212 |
| 526.6 | 2431 | Portland, Willamette River, Oregon | 45.5167 | -122.667 |
| 526.8 | 3205 | Vancouver, Washington | 45.6167 | -122.667 |
| 526.9 | 2430 | Portland, Morrison Street Bridge, Oregon | 45.51 | -122.673 |
| 527.0 | 1664 | Lockheed Shipyard, Harbor Island, Seattle, Washingt | 47.585 | -122.362 |
| 528.6 | 3204 | Vancouver, Columbia River, Washington | 45.6317 | -122.697 |
| 530.0 | 387 | Burton, Quartermaster Harbor (inside), Vashon Islan | 47.395 | -122.463 |
| 531.1 | 1801 | Meadow Point, Shilshole Bay, Seattle, Washington | 47.6883 | -122.403 |
| 531.2 | 3147 | Tulalip, Washington | 48.065 | -122.288 |
| 531.6 | 3023 | Tahlequah, Neil Point, Washington | 47.3317 | -122.507 |
| 531.7 | 2332 | Point Vashon, Vashon Island, Washington | 47.5117 | -122.463 |
| 532.1 | 884 | Edmonds, Washington | 47.8133 | -122.383 |
| 532.1 | 1540 | Knapp Landing, Washington | 45.7333 | -122.75 |
| 532.7 | 2920 | St. Johns, Willamette River, Oregon | 45.5833 | -122.767 |
| 532.8 | 1109 | Glendale, Whidbey Island, Washington | 47.94 | -122.357 |
| 532.9 | 1484 | Kelley Point, Oregon | 45.65 | -122.767 |
| 533.4 | 3018 | Tacoma Narrows Bridge, Washington | 47.2717 | -122.552 |