How far is Seattle, WA from Dayton, WA?
The driving distance from Seattle, WA to Dayton, WA is about 157.1 miles (252.8 km), with a travel time of about 03h 09m by car.
- The straight-line flight distance is about 116.1 miles (186.8 km).
- For a round trip, plan for roughly 06h 18m 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 09m.
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 Thurston County, Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy then Chance Light Rain
Light Rain Likely
Driving Route Map
The map below follows the saved road route between Seattle and Dayton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Dayton.
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1
Start on the route
9 m · 8 sec
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2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
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4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
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5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
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6
Continue straight
3180 ft · 1 min
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7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
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8
Keep slight right to continue on I 5 South: Tacoma, Portland
589 ft · 8 sec
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9
Keep slight left to continue on Airport Way
93 m · 4 sec
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10
Keep slight left to continue on I 5 South: Sea-Tac Airport
30.4 mi · 38 min
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11
Keep slight right
112.2 mi · 2 hr 7 min
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12
Take the exit slight right toward WA 503 East: Woodland, Cougar
1088 ft · 27 sec
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13
Continue on Pacific Avenue
1.1 km · 2 min · Pacific Avenue
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14
Continue on Pacific Avenue
53 m · 14 sec · Pacific Avenue
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15
Turn left onto Lewis River Road
635 ft · 24 sec · Lewis River Road
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16
Turn right onto East CC Street
1360 ft · 37 sec · East CC Street
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17
Turn straight onto Northwest Hayes Road
4 mi · 6 min · Northwest Hayes Road
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18
Continue on Northeast Hayes Road
1.3 mi · 2 min · Northeast Hayes Road
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19
Continue on Northeast Cedar Creek Road
6.6 mi · 10 min · Northeast Cedar Creek Road
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20
Arrive at your destination
0 m · 1 sec · Northeast Cedar Creek Road
Car Route Details
A richer read on the saved driving route between Seattle and Dayton.
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 right
112 mi · 02h 07m
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.
Mostly Cloudy then Chance Light Rain leaving Seattle and Light Rain Likely near Dayton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Dayton?
The road trip is about 157.1 miles (252.8 km) and usually takes 03h 09m 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?
Grand Mound is a useful midpoint, sitting about 78.5 miles from Seattle and 78.6 miles from Dayton.
How much longer is the road route than the straight-line distance?
The direct path is about 116.1 miles (186.8 km), while the road route adds roughly 41 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 10:42 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.99 one way or $57.98 round trip. Estimated CO2 is about 49.2 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy then Chance Light Rain around Seattle and Light Rain Likely near Dayton.
Stop Ideas Near Grand Mound
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 Grand Mound.
Centralia station
Centennial Station
Tacoma Dome Station
Kelso Multimodal Transportation Center
Flight Path Map
This map shows the direct air route between Seattle and Dayton. Straight-line distance: 116.08 mi (186.81 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 Dayton
Town in Washington
| Population | 2,477 |
| Coordinates | 45.9315000, -122.5273200 |
| Altitude | 93 |
| Country | United States |
End: Dayton (-122.52732, 45.9315)
Estimated Travel Time
Distance: 253 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 14m |
| 40 mph (64.37 km/h) | 03h 55m |
| 50 mph (80.47 km/h) | 03h 08m |
| 60 mph (96.56 km/h) | 02h 37m |
| 70 mph (112.65 km/h) | 02h 14m |
| 80 mph (129 km/h) | 01h 57m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $28.99 | $57.98 |
| Mid-grade | $5.57 | $30.84 | $61.68 |
| Premium | $5.77 | $31.97 | $63.94 |
| Diesel | $5.47 | $30.29 | $60.57 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.