How far is Seattle, WA from Ilwaco, WA?
The driving distance from Seattle, WA to Ilwaco, WA is about 170.2 miles (273.9 km), with a travel time of about 03h 52m by car.
- The straight-line flight distance is about 120.6 miles (194.1 km).
- For a round trip, plan for roughly 07h 44m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM PDT.
Reverse, save, or send this route
This drive is better planned with a longer stop or an overnight stay. Copy the route link, send it to another device, or print a clean version before you head out.
This drive is better planned with a longer stop or an overnight stay.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 03h 52m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
City in Grays Harbor County, Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Seattle and Ilwaco.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Ilwaco.
-
1
Start on the route
9 m · 8 sec
-
2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
-
3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
-
4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
-
5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
-
6
Continue straight
3180 ft · 1 min
-
7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
-
8
Keep slight right to continue on I 5 South: Tacoma, Portland
589 ft · 8 sec
-
9
Keep slight left to continue on Airport Way
93 m · 4 sec
-
10
Keep slight left to continue on I 5 South: Sea-Tac Airport
30.4 mi · 38 min
-
11
Keep slight right
29.5 mi · 37 min
-
12
Take the exit slight right toward US 101: Aberdeen, Port Angeles
2448 ft · 35 sec
-
13
Continue straight
5.5 mi · 7 min
-
14
Keep slight left
21 mi · 26 min
-
15
Continue on Olympic Highway
10 mi · 13 min · Olympic Highway
-
16
Take the exit slight right toward WA 107: Montesano, Raymond
1371 ft · 42 sec
-
17
Turn left onto South Main Street
1.6 km · 2 min · South Main Street
-
18
Continue on State Route 107
7 mi · 12 min · State Route 107
-
19
At the end of the road, turn left
18.2 mi · 26 min
-
20
Enter the roundabout and take exit 1 toward the route
19 m · 1 sec
-
21
Exit the roundabout
29.6 mi · 43 min
-
22
At the end of the road, turn right
13.1 mi · 19 min
-
23
Turn left
3136 ft · 54 sec
-
24
Continue straight
2.2 mi · 4 min
-
25
Turn right onto 1st Avenue North
16 m · 2 sec · 1st Avenue North
-
26
Arrive at your destination
0 m · 1 sec · 1st Avenue North
Car Route Details
A richer read on the saved driving route between Seattle and Ilwaco.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 5 South
Keep slight left to continue on I 5 South: Sea-Tac Airport
30.4 mi · 00h 38m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A longer out-and-back drive
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
Light Rain Likely leaving Seattle and Chance Light Rain near Ilwaco.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Ilwaco?
The road trip is about 170.2 miles (273.9 km) and usually takes 03h 52m in normal driving conditions.
Is this a same-day trip or an overnight route?
This is still possible in one day, but it becomes a long driving day. Leaving early and planning your stop window matters more here.
What is the halfway point on this route?
Elma is a useful midpoint, sitting about 85 miles from Seattle and 85.3 miles from Ilwaco.
How much longer is the road route than the straight-line distance?
The direct path is about 120.6 miles (194.1 km), while the road route adds roughly 49.6 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 6:00 AM to 8:00 AM PDT. If you want a more comfortable same-day return, try to leave by 9:16 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.45 one way or $62.90 round trip. Estimated CO2 is about 53.4 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Seattle and Chance Light Rain near Ilwaco.
Stop Ideas Near Elma
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Elma.
Centralia station
Centennial Station
Tacoma Dome Station
Astoria Transit Center
Flight Path Map
This map shows the direct air route between Seattle and Ilwaco. Straight-line distance: 120.6 mi (194.08 km).
#1 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| Country | United States |
#2 Ilwaco
City in Pacific County, Washington, United States
| Population | 1,006 |
| Coordinates | 46.3089900, -124.0432100 |
| Altitude | 7 |
| Country | United States |
End: Ilwaco (-124.04321, 46.30899)
Estimated Travel Time
Distance: 274 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 40m |
| 40 mph (64.37 km/h) | 04h 15m |
| 50 mph (80.47 km/h) | 03h 24m |
| 60 mph (96.56 km/h) | 02h 50m |
| 70 mph (112.65 km/h) | 02h 25m |
| 80 mph (129 km/h) | 02h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $31.45 | $62.90 |
| Mid-grade | $5.57 | $33.46 | $66.92 |
| Premium | $5.77 | $34.68 | $69.37 |
| Diesel | $5.47 | $32.86 | $65.71 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Washington · Apr 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.