| distance | reference number | name | latitude | longitude |
| 270.9 | 916 | Ellsworth, Washington | 45.6 | -122.55 |
| 274.5 | 121 | Ayock Point, Washington | 47.5083 | -122.053 |
| 277.6 | 2431 | Portland, Willamette River, Oregon | 45.5167 | -122.667 |
| 278.0 | 2430 | Portland, Morrison Street Bridge, Oregon | 45.51 | -122.673 |
| 278.0 | 3205 | Vancouver, Washington | 45.6167 | -122.667 |
| 279.8 | 3204 | Vancouver, Columbia River, Washington | 45.6317 | -122.697 |
| 283.5 | 1540 | Knapp Landing, Washington | 45.7333 | -122.75 |
| 283.8 | 2920 | St. Johns, Willamette River, Oregon | 45.5833 | -122.767 |
| 284.1 | 1484 | Kelley Point, Oregon | 45.65 | -122.767 |
| 286.2 | 768 | Des Moines, East Passage, Washington | 47.4 | -122.328 |
| 287.1 | 2624 | Saint Helens, Columbia River, Oregon | 45.865 | -122.797 |
| 287.3 | 2625 | Saint Helens, Oregon | 45.8667 | -122.8 |
| 287.4 | 2805 | Sitcum Waterway, Tacoma, Washington | 47.2667 | -122.413 |
| 287.4 | 3019 | Tacoma, Commencement Bay, Washington | 47.2667 | -122.413 |
| 289.5 | 838 | Duwamish Waterway, Eighth Ave. South, Seattle, Wash | 47.535 | -122.322 |
| 290.4 | 2576 | Rocky Point, Multnomah Channel, Oregon | 45.6967 | -122.868 |
| 291.3 | 1458 | Kalama, Washington | 46 | -122.85 |
| 292.3 | 2725 | Seattle, Puget Sound, Washington | 47.605 | -122.338 |
| 293.0 | 1664 | Lockheed Shipyard, Harbor Island, Seattle, Washingt | 47.585 | -122.362 |
| 293.3 | 387 | Burton, Quartermaster Harbor (inside), Vashon Islan | 47.395 | -122.463 |
| 294.1 | 3023 | Tahlequah, Neil Point, Washington | 47.3317 | -122.507 |
| 295.1 | 3018 | Tacoma Narrows Bridge, Washington | 47.2717 | -122.552 |
| 295.7 | 2958 | Steilacoom, Washington | 47.1733 | -122.603 |
| 296.4 | 2332 | Point Vashon, Vashon Island, Washington | 47.5117 | -122.463 |
| 297.8 | 945 | Everett, Washington | 47.98 | -122.223 |