How far is Renton, WA from Mattawa, WA?
The driving distance from Renton, WA to Mattawa, WA is about 152.3 miles (245.1 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 120.4 miles (193.7 km).
- For a round trip, plan for roughly 05h 57m 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 58m.
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.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Renton and Mattawa.
Turn-by-Turn Driving Directions
Step-by-step road directions between Renton and Mattawa.
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1
Start on the route
19 m · 5 sec
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2
Turn left
22 m · 8 sec
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3
Turn left
30 m · 9 sec
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4
Turn right onto Rainier Avenue South
158 m · 13 sec · Rainier Avenue South
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5
Turn right onto Airport Way
2225 ft · 1 min · Airport Way
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6
Continue on Logan Avenue South
705 ft · 22 sec · Logan Avenue South
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7
Turn right onto North 3rd Street
1 km · 1 min · North 3rd Street
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8
Turn left onto Sunset Boulevard North
1012 ft · 36 sec · Sunset Boulevard North
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9
Keep slight right to continue on Sunset Boulevard North
814 ft · 23 sec · Sunset Boulevard North
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10
Take the ramp slight left toward I 405 North, WA 900 East
6.2 mi · 8 min
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11
Take the exit slight right toward I 90: Seattle, Spokane
1281 ft · 31 sec
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12
Keep slight right to continue on I 90 East: Spokane
1867 ft · 46 sec
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13
Merge slight left
127.8 mi · 2 hr 21 min
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14
Take the exit slight right toward WA 26 East: Othello, Pullman
1454 ft · 36 sec
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15
Turn straight
1.2 km · 59 sec
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16
Turn right onto State Route 243
14.3 mi · 21 min · State Route 243
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17
Enter the roundabout and take exit 3 toward Road 24 Southwest
68 m · 4 sec · Road 24 Southwest
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18
Exit the roundabout onto Road 24 Southwest
1752 ft · 35 sec · Road 24 Southwest
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19
Continue on Government Road
1788 ft · 36 sec · Government Road
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20
Arrive at your destination
0 m · 1 sec · Government Road
Car Route Details
A richer read on the saved driving route between Renton and Mattawa.
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 East
Merge slight left
128 mi · 02h 21m
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.
Mostly Sunny leaving Renton and Mostly Sunny near Mattawa.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Renton to Mattawa?
The road trip is about 152.3 miles (245.1 km) and usually takes 02h 58m 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 miles from Renton and 76.3 miles from Mattawa.
How much longer is the road route than the straight-line distance?
The direct path is about 120.4 miles (193.7 km), while the road route adds roughly 31.9 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 12:32 PM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.10 one way or $56.20 round trip. Estimated CO2 is about 47.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Renton and Mostly Sunny 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 Renton and Mattawa. Straight-line distance: 120.38 mi (193.73 km).
#1 Renton
The second most populous city in King County, Washington.
| Population | 101,494 |
| Coordinates | 47.4828800, -122.2170700 |
| Altitude | 12 |
| 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: 245 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 04m |
| 40 mph (64.37 km/h) | 03h 48m |
| 50 mph (80.47 km/h) | 03h 02m |
| 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 | $28.10 | $56.20 |
| Mid-grade | $5.57 | $29.89 | $59.79 |
| Premium | $5.77 | $30.99 | $61.98 |
| Diesel | $5.47 | $29.36 | $58.72 |
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.