How far is Seattle, WA from Sumner, WA?
The driving distance from Seattle, WA to Sumner, WA is about 34.5 miles (55.6 km), with a travel time of about 00h 46m by car.
- The straight-line flight distance is about 28.1 miles (45.3 km).
- For a round trip, plan for roughly 01h 32m 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 46m.
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.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Seattle and Sumner.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Sumner.
-
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
822 ft · 13 sec
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18
Take the exit slight right toward East Main Traffic Avenue
1334 ft · 40 sec
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19
Turn left onto Traffic Avenue
2174 ft · 47 sec · Traffic Avenue
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20
Turn right onto Maple Street
956 ft · 38 sec · Maple Street
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21
Turn left onto Alder Avenue
68 m · 10 sec · Alder Avenue
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22
Turn right
56 m · 14 sec
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23
Turn slight left
20 m · 5 sec
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24
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Seattle and Sumner.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
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.
Mostly Sunny leaving Seattle and Mostly Sunny near Sumner.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Sumner?
The road trip is about 34.5 miles (55.6 km) and usually takes 00h 46m 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 17.3 miles from Seattle and 17.3 miles from Sumner.
How much longer is the road route than the straight-line distance?
The direct path is about 28.1 miles (45.3 km), while the road route adds roughly 6.4 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 4:58 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.38 one way or $12.77 round trip. Estimated CO2 is about 10.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Seattle and Mostly Sunny near Sumner.
Stop Ideas Near Kent
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Tukwila Community Center
Auburn Building Permits
City of Auburn
Auburn Community & Event Center
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 Sumner. Straight-line distance: 28.17 mi (45.34 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 Sumner
City in Pierce County, Washington, United States of America
| Population | 10,551 |
| Coordinates | 47.2031600, -122.2404000 |
| Altitude | 23 |
| Country | United States |
End: Sumner (-122.2404, 47.20316)
Estimated Travel Time
Distance: 56 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 09m |
| 40 mph (64.37 km/h) | 00h 51m |
| 50 mph (80.47 km/h) | 00h 41m |
| 60 mph (96.56 km/h) | 00h 34m |
| 70 mph (112.65 km/h) | 00h 29m |
| 80 mph (129 km/h) | 00h 25m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $6.38 | $12.77 |
| Mid-grade | $5.57 | $6.79 | $13.58 |
| Premium | $5.77 | $7.04 | $14.08 |
| Diesel | $5.47 | $6.67 | $13.34 |
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 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.