How far is Hermiston, OR from Sumner, WA?
The driving distance from Hermiston, OR to Sumner, WA is about 250.7 miles (403.4 km), with a travel time of about 04h 50m by car.
- The straight-line flight distance is about 169 miles (271.9 km).
- For a round trip, plan for roughly 09h 41m 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 50m.
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
Driving Route Map
The map below follows the saved road route between Hermiston and Sumner.
Turn-by-Turn Driving Directions
Step-by-step road directions between Hermiston and Sumner.
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1
Start on East Main Street
62 m · 8 sec · East Main Street
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2
Turn right onto North 1st Street
1.7 mi · 3 min · North 1st Street
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3
Continue on Umatilla-Stanfield Highway
3.8 mi · 4 min · Umatilla-Stanfield Highway
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4
Turn left onto Columbia River Highway
1.1 km · 49 sec · Columbia River Highway
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5
Take the exit right toward I 82 West, US 395 North: Kennewick, Yakima
1130 ft · 28 sec
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6
Merge slight left onto McNary Highway
1.5 mi · 2 min · McNary Highway
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7
Take the exit slight right toward SR 14: Plymouth, Vancouver
1488 ft · 42 sec
-
8
Turn left onto Lewis and Clark Trail Highway
13.6 mi · 16 min · Lewis and Clark Trail Highway
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9
Turn right
26 mi · 31 min
-
10
Turn right onto State Highway 22
2961 ft · 53 sec · State Highway 22
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11
Turn right onto Wine Country Road
1669 ft · 34 sec · Wine Country Road
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12
Take the ramp right
1682 ft · 21 sec
-
13
Merge slight left
50.5 mi · 55 min
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14
Continue straight
31 mi · 34 min
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15
Keep slight left to continue on I 90 West
85.7 mi · 1 hr 36 min
-
16
Take the exit slight right toward WA 18 West: Auburn
1248 ft · 30 sec
-
17
Keep slight left to continue on SR 18 west, Snoqualmie Parkway: Auburn, Tacoma
137 m · 13 sec
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18
Merge slight right onto Snoqualmie Parkway
1780 ft · 25 sec · Snoqualmie Parkway
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19
Continue on State Route 18
24.2 mi · 31 min · State Route 18
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20
Take the exit slight right toward WA 167: Renton, Puyallup
1109 ft · 19 sec
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21
Keep slight left to continue on WA 167 South: Puyallup, West Valley Highway
1523 ft · 26 sec
-
22
Keep slight right to continue on WA 167 South: Puyallup
970 ft · 25 sec
-
23
Merge slight left onto Valley Freeway
7.3 mi · 9 min · Valley Freeway
-
24
Take the exit slight right toward WA 410 East: Sumner, Yakima
3042 ft · 47 sec
-
25
Continue straight
822 ft · 13 sec
-
26
Take the exit slight right toward East Main Traffic Avenue
1334 ft · 40 sec
-
27
Turn left onto Traffic Avenue
2174 ft · 47 sec · Traffic Avenue
-
28
Turn right onto Maple Street
956 ft · 38 sec · Maple Street
-
29
Turn left onto Alder Avenue
68 m · 10 sec · Alder Avenue
-
30
Turn right
56 m · 14 sec
-
31
Turn slight left
20 m · 5 sec
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32
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Hermiston and Sumner.
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 West
Keep slight left to continue on I 90 West
85.7 mi · 01h 36m
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.
Sunny leaving Hermiston and Patchy Fog then Mostly Sunny near Sumner.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Hermiston to Sumner?
The road trip is about 250.7 miles (403.4 km) and usually takes 04h 50m 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 125 miles from Hermiston and 125.7 miles from Sumner.
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 81.7 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 7:18 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $44.14 one way or $88.29 round trip. Estimated CO2 is about 78.6 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Hermiston and Patchy Fog then Mostly Sunny near Sumner.
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 Hermiston and Sumner. Straight-line distance: 168.94 mi (271.88 km).
#1 Hermiston
City in Oregon, USA
| Population | 17,791 |
| Coordinates | 45.8404100, -119.2894600 |
| Altitude | 140 |
| 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: 403 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 21m |
| 40 mph (64.37 km/h) | 06h 16m |
| 50 mph (80.47 km/h) | 05h 00m |
| 60 mph (96.56 km/h) | 04h 10m |
| 70 mph (112.65 km/h) | 03h 34m |
| 80 mph (129 km/h) | 03h 07m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $4.99 | $44.14 | $88.29 |
| Mid-grade | $5.25 | $46.46 | $92.93 |
| Premium | $5.56 | $49.17 | $98.34 |
| Diesel | $6.75 | $59.69 | $119.39 |
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 Oregon · Oct 15, 2026