The short answer
Use 10 days from Seattle: four for Olympic, two for Rainier, two for North Cascades, and two for transfers or weather. Travel clockwise or counterclockwise based on lodging. Avoid crossing Seattle during weekday rush hour, and remember that Hurricane Ridge, Paradise, Sunrise, and Cascade Pass each have independent road conditions.
A balanced 10-day Washington loop
| Day | Base | Plan |
|---|---|---|
| 1 | Port Angeles | Seattle transfer, visitor center, Elwha or coast orientation |
| 2 | Port Angeles | Hurricane Ridge and Lake Crescent |
| 3 | Forks | Hoh Rain Forest and west-side beach |
| 4 | Lake Quinault or Forks | Coast, Quinault, or weather recovery |
| 5 | Ashford | Long transfer around the peninsula |
| 6 | Ashford | Paradise trails and waterfalls |
| 7 | Packwood or north side | Sunrise or second Rainier district when open |
| 8 | Marblemount | Transfer around Seattle or east side |
| 9 | Marblemount or Winthrop | Highway 20 and Diablo corridor |
| 10 | Seattle | Cascade Pass if road suits, or Highway 20 return |
Olympic needs several bases
North
Port Angeles supports Hurricane Ridge, Lake Crescent, and Sol Duc.
West
Forks shortens Hoh, Rialto, and coastal drives. Tide tables control beach routes.
South
Lake Quinault provides rainforest and a natural exit toward Mount Rainier.
Treat Rainier and North Cascades roads separately
Mount Rainier
Paradise and Sunrise are not quick companions. Snow, wildfire, construction, and parking can affect one side only.
Highway 20
The scenic state highway reaches Diablo and Ross Lake views but closes seasonally.
Cascade Pass
The rough road prohibits large vehicles and can open weeks after the highway.
The full route has a short season
July through September
This offers the broadest high-road access, with wildfire smoke and full lodging as major tradeoffs.
June
Rainforest and waterfalls thrive, while alpine roads and trails may still hold snow.
October through spring
Olympic lowlands remain rewarding, but Sunrise, Highway 20, and many high trails close.
Make four road checks, not one weather check
Review Hurricane Ridge, west-side roads, Rainier district roads, Highway 20, Cascade River Road, fire, smoke, ferry, and tide conditions.
Keep the route tied to current park details
Use Map My Parks to compare the three parks and open their official condition links. The same forecast icon cannot represent rainforest coast, a 6,400-foot ridge, and the dry east side.
Place lodging near the next morning, not the previous afternoon
Olympic especially punishes one-base planning. A Port Angeles room is useful for Hurricane Ridge but several hours from the Hoh and coastal trailheads. Move the base once, then stay two nights when possible.
Rainier
Ashford supports Paradise, while Packwood can fit the southeast and White River side. Sunrise may still require a long seasonal drive.
North Cascades
Marblemount is practical for Cascade River Road. Winthrop is better for the east side but far from a morning Cascade Pass start.
Seattle
Use the city for airport nights, not as a daily park base. Traffic and ferry queues can consume the coolest hiking hours.
Common questions
How many days do I need for Washington’s national parks?
Ten days is balanced. Seven days requires cutting an Olympic district or major mountain day.
What order should I visit?
Olympic, Mount Rainier, and North Cascades works clockwise from Seattle, but lodging and weekday traffic may favor reversing it.
What is the best month?
July through September offers the broadest high-elevation access, with wildfire and smoke risk.
Can I stay in Seattle for all three?
No. Daily commutes would consume the best trail hours and create major traffic exposure.
Do I need ferry reservations?
Some vehicle ferry routes accept or recommend reservations and others do not. Check the exact Washington State Ferries route.
