How far is Grand Mound, WA from Spokane, WA?
The driving distance from Grand Mound, WA to Spokane, WA is about 340.4 miles (547.9 km), with a travel time of about 05h 31m by car.
- The straight-line flight distance is about 268.7 miles (432.4 km).
- For a round trip, plan for roughly 11h 03m 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 31m.
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.
Mostly Sunny
Slight Chance Light Rain
Driving Route Map
The map below follows the saved road route between Grand Mound and Spokane.
Turn-by-Turn Driving Directions
Step-by-step road directions between Grand Mound and Spokane.
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1
Start on the route
89 m · 27 sec
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2
Turn left
30 m · 9 sec
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3
Turn right onto Old Highway 99 Southwest
1.3 km · 2 min · Old Highway 99 Southwest
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4
Enter the roundabout and take exit 2 toward Large Round About
25 m · 5 sec · Old Highway 99 Southwest
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5
Exit the rotary onto Old Highway 99 Southwest
633 ft · 17 sec · Old Highway 99 Southwest
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6
Turn right onto US 12 West
1801 ft · 49 sec · US 12 West
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7
Take the ramp left toward I 5 North
1010 ft · 25 sec
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8
Merge slight left
44.9 mi · 54 min
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9
Keep slight right
8.2 mi · 10 min
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10
Take the exit slight right toward WA 18 East: Auburn, Muckleshoot Reservation
2644 ft · 1 min
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11
Merge slight left onto State Route 18
27.3 mi · 35 min · State Route 18
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12
Continue on Snoqualmie Parkway
656 ft · 8 sec · Snoqualmie Parkway
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13
Take the exit slight right toward I 90 East: Spokane
3019 ft · 1 min
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14
Merge slight left
251.7 mi · 4 hr 32 min
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15
Merge slight right
1.8 mi · 2 min
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16
Take the exit slight right toward Maple Street, Lincoln Street, Walnut Street
1203 ft · 31 sec
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17
Continue on West 5th Avenue
117 m · 13 sec · West 5th Avenue
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18
Turn straight onto West Freeway Avenue
1151 ft · 33 sec · West Freeway Avenue
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19
Continue on West 4th Avenue
1027 ft · 31 sec · West 4th Avenue
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20
Continue on West 4th Avenue
51 m · 5 sec · West 4th Avenue
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21
Continue on South Lincoln Street
2275 ft · 1 min · South Lincoln Street
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22
Turn left onto West Main Avenue
846 ft · 35 sec · West Main Avenue
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23
Turn right
8 m · 9 sec
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24
Turn left onto South Gorge Trail
48 m · 17 sec · South Gorge Trail
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25
Arrive at your destination
0 m · 1 sec · South Gorge Trail
Car Route Details
A richer read on the saved driving route between Grand Mound and Spokane.
Long-distance drive
This route is long enough that fuel, rest stops, weather, and timing matter more than any single maneuver.
I 90 East
Merge slight left
252 mi · 04h 32m
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.
Mostly Sunny leaving Grand Mound and Slight Chance Light Rain near Spokane.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Grand Mound to Spokane?
The road trip is about 340.4 miles (547.9 km) and usually takes 05h 31m 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?
Ellensburg is a useful midpoint, sitting about 168.6 miles from Grand Mound and 171.8 miles from Spokane.
How much longer is the road route than the straight-line distance?
The direct path is about 268.7 miles (432.4 km), while the road route adds roughly 71.7 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 5:56 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $62.85 one way or $125.70 round trip. Estimated CO2 is about 106.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Grand Mound and Slight Chance Light Rain near Spokane.
Stop Ideas Near Ellensburg
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 Ellensburg.
Columbia Station
Quincy, Washington
Leavenworth, Washington
Leavenworth
Flight Path Map
This map shows the direct air route between Grand Mound and Spokane. Straight-line distance: 268.71 mi (432.44 km).
#1 Grand Mound
City in Thurston County, Washington, United States
| Population | 2,981 |
| Coordinates | 46.7878800, -123.0112500 |
| Altitude | 51 |
| Country | United States |
#2 Spokane
The second most populous city in Washington.
| Population | 222,050 |
| Coordinates | 47.6596600, -117.4290800 |
| Altitude | 571 |
| Country | United States |
End: West Main Avenue (-117.429081, 47.659029)
Estimated Travel Time
Distance: 548 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 11h 20m |
| 40 mph (64.37 km/h) | 08h 30m |
| 50 mph (80.47 km/h) | 06h 48m |
| 60 mph (96.56 km/h) | 05h 40m |
| 70 mph (112.65 km/h) | 04h 51m |
| 80 mph (129 km/h) | 04h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $62.85 | $125.70 |
| Mid-grade | $5.57 | $66.86 | $133.72 |
| Premium | $5.77 | $69.31 | $138.62 |
| Diesel | $5.47 | $65.66 | $131.32 |
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 16, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.