How far is Spokane Valley, WA from Mill Plain, WA?
The driving distance from Spokane Valley, WA to Mill Plain, WA is about 356.5 miles (573.7 km), with a travel time of about 06h 53m by car.
- The straight-line flight distance is about 285.9 miles (460.1 km).
- For a round trip, plan for roughly 13h 46m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 7:30 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 06h 53m.
Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
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 North Dakota
Route Weather Snapshot
Check the forecast at both ends before you head out.
Rain
Light Rain
Driving Route Map
The map below follows the saved road route between Spokane Valley and Mill Plain.
Turn-by-Turn Driving Directions
Step-by-step road directions between Spokane Valley and Mill Plain.
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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
122.6 mi · 2 hr 14 min · Columbia River Highway
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15
Take the exit slight right toward Cascade Locks
1.6 mi · 3 min
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16
Turn left onto Bridge of the Gods
1.1 km · 3 min · Bridge of the Gods
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17
At the end of the road, turn left onto Evergreen Highway
19.9 mi · 28 min · Evergreen Highway
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18
Continue on Southeast Lewis and Clark Highway
4.5 mi · 6 min · Southeast Lewis and Clark Highway
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19
Enter the roundabout and take exit 2 toward Lewis and Clark Highway
45 m · 2 sec · Lewis and Clark Highway
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20
Exit the roundabout onto Lewis and Clark Highway
1.5 km · 1 min · Lewis and Clark Highway
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21
Enter the roundabout and take exit 2 toward Lewis and Clark Highway
27 m · 1 sec · Lewis and Clark Highway
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22
Exit the roundabout onto Lewis and Clark Highway
4 mi · 5 min · Lewis and Clark Highway
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23
Continue on Southeast Lewis and Clark Highway
3.1 mi · 4 min · Southeast Lewis and Clark Highway
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24
Take the exit slight right toward Southeast 164th Avenue
1996 ft · 57 sec
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25
Keep slight right
80 m · 7 sec
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26
Turn straight onto Southeast 164th Avenue
1.6 mi · 3 min · Southeast 164th Avenue
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27
Turn right onto Southeast Mill Plain Boulevard
2302 ft · 58 sec · Southeast Mill Plain Boulevard
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28
Turn left onto Southeast 172nd Avenue
1.9 mi · 4 min · Southeast 172nd Avenue
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29
Turn right onto Northeast 29th Street
61 m · 11 sec · Northeast 29th Street
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30
Turn right onto Northeast 173rd Court
104 m · 15 sec · Northeast 173rd Court
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31
Turn slight left
67 m · 16 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 Spokane Valley and Mill Plain.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
Columbia River Highway
Continue on Columbia River Highway
123 mi · 02h 14m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
Better with a longer stop
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
Rain leaving Spokane Valley and Light Rain near Mill Plain.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Spokane Valley to Mill Plain?
The road trip is about 356.5 miles (573.7 km) and usually takes 06h 53m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is long enough that most travelers will be better off planning an overnight stay or a more deliberate stop window.
What is the halfway point on this route?
Finley is a useful midpoint, sitting about 178 miles from Spokane Valley and 178.5 miles from Mill Plain.
How much longer is the road route than the straight-line distance?
The direct path is about 285.9 miles (460.1 km), while the road route adds roughly 70.6 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 7:30 AM PDT. Starting early still helps, but most travelers will want a longer stop or an overnight stay on a route this long.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $65.83 one way or $131.66 round trip. Estimated CO2 is about 111.8 kg one way.
What should you check before leaving?
Before you leave, expect Rain around Spokane Valley and Light Rain near Mill Plain.
Stop Ideas Near Finley
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 Finley.
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 Mill Plain. Straight-line distance: 285.87 mi (460.06 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 Mill Plain
Census designated place
| Population | 7,874 |
| Coordinates | 45.6429000, -122.4939800 |
| Altitude | 84 |
| Country | United States |
End: Mill Plain (-122.49398, 45.6429)
Estimated Travel Time
Distance: 574 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 52m |
| 40 mph (64.37 km/h) | 08h 54m |
| 50 mph (80.47 km/h) | 07h 07m |
| 60 mph (96.56 km/h) | 05h 56m |
| 70 mph (112.65 km/h) | 05h 05m |
| 80 mph (129 km/h) | 04h 26m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $65.83 | $131.66 |
| Mid-grade | $5.57 | $70.03 | $140.07 |
| Premium | $5.77 | $72.60 | $145.20 |
| Diesel | $5.47 | $68.77 | $137.55 |
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.