How far is Spokane Valley, WA from Dallesport, WA?
The driving distance from Spokane Valley, WA to Dallesport, WA is about 278.7 miles (448.6 km), with a travel time of about 05h 12m by car.
- The straight-line flight distance is about 234.7 miles (377.7 km).
- For a round trip, plan for roughly 10h 24m 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 05h 12m.
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.
The third most populous city in Franklin County, Washington.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Spokane Valley and Dallesport.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spokane Valley and Dallesport.
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1
Start on North Pines Road
820 ft · 27 sec · North Pines Road
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2
Turn left onto East Montgomery Avenue
47 m · 6 sec · East Montgomery Avenue
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3
Take the ramp slight left
1753 ft · 43 sec
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4
Merge slight left onto Spokane Valley Freeway
11.3 mi · 14 min · Spokane Valley Freeway
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5
Keep slight left
56.6 mi · 1 hr 1 min
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6
Keep slight right to continue on Thomas S. Foley Memorial Highway
73.7 mi · 1 hr 19 min · Thomas S. Foley Memorial Highway
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7
Take the exit slight right toward I 182 West, US 395 South: Richland, Pendleton
3076 ft · 1 min
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8
Merge slight left onto Lewis and Clark Trail
1.9 mi · 2 min · Lewis and Clark Trail
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9
Keep slight right to continue on Lewis and Clark Trail
3.8 mi · 5 min · Lewis and Clark Trail
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10
Continue on North US 395
1.1 mi · 2 min · North US 395
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11
Continue on Lewis and Clark Trail Highway
33.4 mi · 38 min · Lewis and Clark Trail Highway
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12
Keep slight right to continue on I 84 West: Portland
3223 ft · 1 min
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13
Merge slight left onto Old Oregon Trail Highway
11.3 mi · 12 min · Old Oregon Trail Highway
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14
Continue on Columbia River Highway
80.6 mi · 1 hr 26 min · Columbia River Highway
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15
Take the exit slight right toward US 30, US 197: Dufur, Bend
1253 ft · 35 sec
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16
Turn right onto The Dalles-California Highway
1 mi · 2 min · The Dalles-California Highway
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17
Turn left onto Dallesport Road
2 mi · 5 min · Dallesport Road
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18
Turn left onto 6th Avenue
1193 ft · 53 sec · 6th Avenue
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19
Arrive at your destination
0 m · 1 sec · 6th Avenue
Car Route Details
A richer read on the saved driving route between Spokane Valley and Dallesport.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Columbia River Highway
Continue on Columbia River Highway
80.6 mi · 01h 26m
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.
Rain leaving Spokane Valley and Chance Light Rain near Dallesport.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spokane Valley to Dallesport?
The road trip is about 278.7 miles (448.6 km) and usually takes 05h 12m 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?
Pasco is a useful midpoint, sitting about 139.1 miles from Spokane Valley and 139.6 miles from Dallesport.
How much longer is the road route than the straight-line distance?
The direct path is about 234.7 miles (377.7 km), while the road route adds roughly 44 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 6:36 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $51.49 one way or $102.99 round trip. Estimated CO2 is about 87.4 kg one way.
What should you check before leaving?
Before you leave, expect Rain around Spokane Valley and Chance Light Rain near Dallesport.
Stop Ideas Near Pasco
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 Pasco.
Pasco Intermodal Train Station
Walla Walla, WA
Pendleton, Oregon
Moses Lake, Washington
Flight Path Map
This map shows the direct air route between Spokane Valley and Dallesport. Straight-line distance: 234.7 mi (377.71 km).
#1 Spokane Valley
The most populous city in Spokane County, Washington.
| Population | 102,893 |
| Coordinates | 47.6732300, -117.2393700 |
| Altitude | 615 |
| Country | United States |
#2 Dallesport
Census designated place
| Population | 1,202 |
| Coordinates | 45.6173400, -121.1795200 |
| Altitude | 65 |
| Country | United States |
End: Dallesport (-121.17952, 45.61734)
Estimated Travel Time
Distance: 449 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 17m |
| 40 mph (64.37 km/h) | 06h 58m |
| 50 mph (80.47 km/h) | 05h 34m |
| 60 mph (96.56 km/h) | 04h 38m |
| 70 mph (112.65 km/h) | 03h 58m |
| 80 mph (129 km/h) | 03h 28m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $51.49 | $102.99 |
| Mid-grade | $5.57 | $54.78 | $109.56 |
| Premium | $5.77 | $56.79 | $113.57 |
| Diesel | $5.47 | $53.80 | $107.59 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.