How far is Seattle, WA from Alderton, WA?
The driving distance from Seattle, WA to Alderton, WA is about 36.4 miles (58.6 km), with a travel time of about 00h 48m by car.
- The straight-line flight distance is about 30.6 miles (49.2 km).
- For a round trip, plan for roughly 01h 37m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 00h 48m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
The fourth most populous city in King County, Washington.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Seattle and Alderton.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Alderton.
-
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
10 mi · 13 min
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11
Take the exit slight left toward I 405 North: Renton
1740 ft · 35 sec
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12
Continue straight
1.5 mi · 2 min
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13
Take the exit slight right toward WA 167 South: Renton, Auburn
2161 ft · 31 sec
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14
Keep slight right to continue on WA 167 South: Kent, Auburn
2033 ft · 43 sec
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15
Merge slight left onto Valley Freeway
19 mi · 24 min · Valley Freeway
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16
Take the exit slight right toward WA 410 East: Sumner, Yakima
3042 ft · 47 sec
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17
Continue straight
1.3 mi · 2 min
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18
Take the exit slight right toward WA 162 East: Valley Avenue, Orting
1009 ft · 30 sec
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19
Turn right onto Orting Highway East
2213 ft · 58 sec · Orting Highway East
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20
Continue on State Route 162
1.1 mi · 2 min · State Route 162
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21
Arrive at your destination
0 m · 1 sec · State Route 162
Car Route Details
A richer read on the saved driving route between Seattle and Alderton.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Valley Freeway
Merge slight left onto Valley Freeway
19 mi · 00h 24m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Light Rain Likely leaving Seattle and Showers And Thunderstorms near Alderton.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Alderton?
The road trip is about 36.4 miles (58.6 km) and usually takes 00h 48m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Kent is a useful midpoint, sitting about 18.2 miles from Seattle and 18.2 miles from Alderton.
How much longer is the road route than the straight-line distance?
The direct path is about 30.6 miles (49.2 km), while the road route adds roughly 5.8 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 4:52 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.75 one way or $13.50 round trip. Estimated CO2 is about 11.5 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Seattle and Showers And Thunderstorms near Alderton.
Stop Ideas Near Kent
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Old City Hall Tacoma
Tukwila Community Center
Auburn Building Permits
City of Covington
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Kent.
Tukwila station
Tacoma Dome Station
King Street Station
Seattle (Ferry - Pier 69), Washington
Flight Path Map
This map shows the direct air route between Seattle and Alderton. Straight-line distance: 30.55 mi (49.17 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 Alderton
Alderton is a place in Washington, United States.
| Population | 0 |
| Coordinates | 47.1695500, -122.2292800 |
| Altitude | 27 |
| Country | United States |
End: Alderton (-122.22928, 47.16955)
Estimated Travel Time
Distance: 59 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 12m |
| 40 mph (64.37 km/h) | 00h 54m |
| 50 mph (80.47 km/h) | 00h 43m |
| 60 mph (96.56 km/h) | 00h 36m |
| 70 mph (112.65 km/h) | 00h 31m |
| 80 mph (129 km/h) | 00h 27m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $6.75 | $13.50 |
| Mid-grade | $5.57 | $7.18 | $14.36 |
| Premium | $5.77 | $7.44 | $14.89 |
| Diesel | $5.47 | $7.05 | $14.10 |
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 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.