How far is Sumner, WA from Hermiston, OR?
The driving distance from Sumner, WA to Hermiston, OR is about 249.3 miles (401.2 km), with a travel time of about 04h 49m by car.
- The straight-line flight distance is about 169 miles (271.9 km).
- For a round trip, plan for roughly 09h 38m 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 04h 49m.
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 Kittitas County, Washington, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Patchy Fog then Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between Sumner and Hermiston.
Turn-by-Turn Driving Directions
Step-by-step road directions between Sumner and Hermiston.
-
1
Start on the route
17 m · 10 sec
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2
At the end of the road, turn left onto Main Street
1019 ft · 39 sec · Main Street
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3
Turn left onto Traffic Avenue
1927 ft · 52 sec · Traffic Avenue
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4
Take the ramp right toward WA 410 West: Tacoma, Seattle
1243 ft · 19 sec
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5
Merge slight left
93 m · 5 sec
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6
Keep slight right to continue on WA 167 North: Seattle
1749 ft · 43 sec
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7
Merge slight left onto Valley Freeway
6.5 mi · 8 min · Valley Freeway
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8
Take the exit slight right toward WA 18 East: Auburn
1.6 km · 2 min
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9
Merge slight left onto State Route 18
24.1 mi · 31 min · State Route 18
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10
Continue on Snoqualmie Parkway
656 ft · 8 sec · Snoqualmie Parkway
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11
Take the exit slight right toward I 90 East: Spokane
3019 ft · 1 min
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12
Merge slight left
84.5 mi · 1 hr 33 min
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13
Take the exit slight right toward I 82 East, US 97 South: Yakima
37.8 mi · 43 min
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14
Keep slight left
44.7 mi · 48 min
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15
Take the exit slight right toward SR 22 to SR 221: Mabton, Paterson
1712 ft · 45 sec
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16
Turn left onto Wine Country Road
572 ft · 17 sec · Wine Country Road
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17
Turn left onto State Highway 22
2961 ft · 57 sec · State Highway 22
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18
Turn left
26 mi · 31 min
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19
Turn left onto Lewis and Clark Trail Highway
13.5 mi · 16 min · Lewis and Clark Trail Highway
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20
Take the ramp right toward I 82 East, US 395 South: Pendleton
1705 ft · 42 sec
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21
Merge slight left onto McNary Highway
1.5 mi · 2 min · McNary Highway
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22
Take the exit slight right toward US 395 south, US 730: Umatilla, Hermiston, Irrigon
912 ft · 22 sec
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23
Keep slight left to continue on US 395 south, US 730: Umatilla, Hermiston, Irrigon
52 m · 11 sec
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24
Turn left onto Columbia River Highway
1.3 km · 57 sec · Columbia River Highway
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25
Turn right onto Umatilla-Stanfield Highway
3.8 mi · 4 min · Umatilla-Stanfield Highway
-
26
Continue on North 1st Street
1.7 mi · 4 min · North 1st Street
-
27
Turn left onto East Main Street
62 m · 4 sec · East Main Street
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28
Arrive at your destination
0 m · 1 sec · East Main Street
Car Route Details
A richer read on the saved driving route between Sumner and Hermiston.
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 90 East
Merge slight left
84.5 mi · 01h 33m
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.
Patchy Fog then Mostly Sunny leaving Sumner and Sunny near Hermiston.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Sumner to Hermiston?
The road trip is about 249.3 miles (401.2 km) and usually takes 04h 49m 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?
Kittitas is a useful midpoint, sitting about 124.5 miles from Sumner and 124.8 miles from Hermiston.
How much longer is the road route than the straight-line distance?
The direct path is about 169 miles (271.9 km), while the road route adds roughly 80.3 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 7:22 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $47.83 one way or $95.66 round trip. Estimated CO2 is about 78.2 kg one way.
What should you check before leaving?
Before you leave, expect Patchy Fog then Mostly Sunny around Sumner and Sunny near Hermiston.
Stop Ideas Near Kittitas
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 Kittitas.
Columbia Station
Quincy, Washington
Leavenworth, Washington
Leavenworth
Flight Path Map
This map shows the direct air route between Sumner and Hermiston. Straight-line distance: 168.94 mi (271.88 km).
#1 Sumner
City in Pierce County, Washington, United States of America
| Population | 10,551 |
| Coordinates | 47.2031600, -122.2404000 |
| Altitude | 23 |
| Country | United States |
#2 Hermiston
City in Oregon, USA
| Population | 17,791 |
| Coordinates | 45.8404100, -119.2894600 |
| Altitude | 140 |
| Country | United States |
End: Hermiston (-119.28946, 45.84041)
Estimated Travel Time
Distance: 401 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 18m |
| 40 mph (64.37 km/h) | 06h 13m |
| 50 mph (80.47 km/h) | 04h 59m |
| 60 mph (96.56 km/h) | 04h 09m |
| 70 mph (112.65 km/h) | 03h 33m |
| 80 mph (129 km/h) | 03h 06m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.44 | $47.83 | $95.66 |
| Mid-grade | $5.72 | $50.33 | $100.65 |
| Premium | $5.98 | $52.60 | $105.20 |
| Diesel | $7.29 | $64.17 | $128.34 |
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 · Oct 15, 2026