How far is Grand Coulee, WA from Seattle, WA?
The driving distance from Grand Coulee, WA to Seattle, WA is about 227.7 miles (366.5 km), with a travel time of about 03h 50m by car.
- The straight-line flight distance is about 156.3 miles (251.5 km).
- For a round trip, plan for roughly 07h 40m 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 03h 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.
Chance Rain Showers
Light Rain Likely
Driving Route Map
The map below follows the saved road route between Grand Coulee and Seattle.
Turn-by-Turn Driving Directions
Step-by-step road directions between Grand Coulee and Seattle.
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1
Start on Spokane Way
43 m · 5 sec · Spokane Way
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2
Turn right onto Main Street
50 m · 5 sec · Main Street
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3
Turn left onto Midway Avenue
1553 ft · 44 sec · Midway Avenue
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4
Continue on Midway Avenue
78 m · 7 sec · Midway Avenue
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5
Continue on Grand Coulee Avenue
2795 ft · 57 sec · Grand Coulee Avenue
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6
Continue on Coulee Boulevard
25.1 mi · 33 min · Coulee Boulevard
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7
Continue on Coulee Corridor / Sunset Highway
4.3 mi · 6 min · Coulee Corridor / Sunset Highway
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8
Turn left onto Coulee Corridor
21.3 mi · 29 min · Coulee Corridor
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9
Turn right
3.7 mi · 5 min
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10
Turn left onto Alder Street Northwest
1.6 mi · 3 min · Alder Street Northwest
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11
Continue on Alder Street Southwest
2032 ft · 57 sec · Alder Street Southwest
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12
Turn right onto 5th Avenue Southwest
120 m · 16 sec · 5th Avenue Southwest
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13
Turn left onto Basin Street Southwest
19.9 mi · 27 min · Basin Street Southwest
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14
Take the ramp straight toward I 90 West: Seattle
1838 ft · 45 sec
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15
Merge slight left
148.8 mi · 2 hr 45 min
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16
Take the exit slight right toward I 5 North: Vancouver British Columbia, James Street, Madison Street
1.2 km · 1 min
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17
Keep slight left to continue on I 5 North: Vancouver British Columbia, Madison Street, Convention Center
881 ft · 22 sec
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18
Keep slight right to continue on Madison Street, Convention Place
1843 ft · 55 sec
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19
Turn left onto Madison Street
760 ft · 35 sec · Madison Street
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20
Turn left
9 m · 2 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Grand Coulee and Seattle.
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
Merge slight left
149 mi · 02h 45m
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.
Chance Rain Showers leaving Grand Coulee and Light Rain Likely near Seattle.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Grand Coulee to Seattle?
The road trip is about 227.7 miles (366.5 km) and usually takes 03h 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 113.8 miles from Grand Coulee and 113.9 miles from Seattle.
How much longer is the road route than the straight-line distance?
The direct path is about 156.3 miles (251.5 km), while the road route adds roughly 71.4 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 9:20 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $42.07 one way or $84.15 round trip. Estimated CO2 is about 71.5 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Grand Coulee and Light Rain Likely near Seattle.
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 Grand Coulee and Seattle. Straight-line distance: 156.28 mi (251.51 km).
#1 Grand Coulee
City in Grant County, Washington, United States
| Population | 1,050 |
| Coordinates | 47.9415400, -119.0033500 |
| Altitude | 452 |
| Country | United States |
#2 Seattle
The eighteenth most populous city in the United States and the center of the Seattle metropolitan area.
| Population | 769,714 |
| Coordinates | 47.6062100, -122.3320700 |
| Altitude | 56 |
| Country | United States |
End: (-122.332143, 47.606309)
Estimated Travel Time
Distance: 366 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 35m |
| 40 mph (64.37 km/h) | 05h 41m |
| 50 mph (80.47 km/h) | 04h 33m |
| 60 mph (96.56 km/h) | 03h 47m |
| 70 mph (112.65 km/h) | 03h 15m |
| 80 mph (129 km/h) | 02h 50m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $42.07 | $84.15 |
| Mid-grade | $5.57 | $44.76 | $89.52 |
| Premium | $5.77 | $46.40 | $92.80 |
| Diesel | $5.47 | $43.95 | $87.91 |
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.