How far is Seattle, WA from Mattawa, WA?
The driving distance from Seattle, WA to Mattawa, WA is about 152.9 miles (246 km), with a travel time of about 02h 57m by car.
- The straight-line flight distance is about 128.9 miles (207.4 km).
- For a round trip, plan for roughly 05h 55m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM PDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 57m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Light Rain Likely
Chance Light Rain
Driving Route Map
The map below follows the saved road route between Seattle and Mattawa.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Mattawa.
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1
Start on the route
9 m · 8 sec
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2
Turn left onto Madison Street
62 m · 11 sec · Madison Street
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3
Turn right onto 4th Avenue
94 m · 15 sec · 4th Avenue
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4
Turn right onto Spring Street
647 ft · 26 sec · Spring Street
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5
Take the ramp right toward I 5 South: Portland
1151 ft · 28 sec
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6
Continue straight
3180 ft · 1 min
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7
Keep slight left to continue on I 90 East, I 5 South: Bellevue, Portland
45 m · 2 sec
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8
Keep slight left to continue on I 90 East: Bellevue, Spokane
2257 ft · 55 sec
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9
Merge slight left
1.6 km · 1 min
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10
Keep slight left to continue on Mount Baker Ridge Tunnel
134.3 mi · 2 hr 29 min · Mount Baker Ridge Tunnel
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11
Take the exit slight right toward WA 26 East: Othello, Pullman
1454 ft · 36 sec
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12
Turn straight
1.2 km · 59 sec
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13
Turn right onto State Route 243
14.3 mi · 21 min · State Route 243
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14
Enter the roundabout and take exit 3 toward Road 24 Southwest
68 m · 4 sec · Road 24 Southwest
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15
Exit the roundabout onto Road 24 Southwest
1752 ft · 35 sec · Road 24 Southwest
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16
Continue on Government Road
1788 ft · 36 sec · Government Road
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17
Arrive at your destination
0 m · 1 sec · Government Road
Car Route Details
A richer read on the saved driving route between Seattle and Mattawa.
Interchange-aware route
The drive includes several ramps, exits, or merges, so checking the next few maneuvers before busy interchanges is useful.
Mount Baker Ridge Tunnel
Keep slight left to continue on Mount Baker Ridge Tunnel
134 mi · 02h 29m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Light Rain Likely leaving Seattle and Chance Light Rain near Mattawa.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Mattawa?
The road trip is about 152.9 miles (246 km) and usually takes 02h 57m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Roslyn is a useful midpoint, sitting about 76.2 miles from Seattle and 76.6 miles from Mattawa.
How much longer is the road route than the straight-line distance?
The direct path is about 128.9 miles (207.4 km), while the road route adds roughly 24 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 8:00 AM to 10:00 AM PDT. If you want a more comfortable same-day return, try to leave by 12:34 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.21 one way or $56.41 round trip. Estimated CO2 is about 47.9 kg one way.
What should you check before leaving?
Before you leave, expect Light Rain Likely around Seattle and Chance Light Rain near Mattawa.
Stop Ideas Near Roslyn
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 Roslyn.
Leavenworth, Washington
Leavenworth
Columbia Station
Stevens Pass, Washington
Flight Path Map
This map shows the direct air route between Seattle and Mattawa. Straight-line distance: 128.9 mi (207.45 km).
#1 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 |
#2 Mattawa
City in Washington, United States
| Population | 5,112 |
| Coordinates | 46.7379100, -119.9028200 |
| Altitude | 234 |
| Country | United States |
End: Mattawa (-119.90282, 46.73791)
Estimated Travel Time
Distance: 246 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 05m |
| 40 mph (64.37 km/h) | 03h 49m |
| 50 mph (80.47 km/h) | 03h 03m |
| 60 mph (96.56 km/h) | 02h 32m |
| 70 mph (112.65 km/h) | 02h 10m |
| 80 mph (129 km/h) | 01h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $28.21 | $56.41 |
| Mid-grade | $5.57 | $30.01 | $60.01 |
| Premium | $5.77 | $31.11 | $62.21 |
| Diesel | $5.47 | $29.47 | $58.93 |
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.