How far is Seattle, WA from Prosser, WA?
The driving distance from Seattle, WA to Prosser, WA is about 191.3 miles (307.9 km), with a travel time of about 03h 36m by car.
- The straight-line flight distance is about 154.8 miles (249.2 km).
- For a round trip, plan for roughly 07h 13m 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 36m.
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 then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Seattle and Prosser.
Turn-by-Turn Driving Directions
Step-by-step road directions between Seattle and Prosser.
-
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
107 mi · 2 hr · Mount Baker Ridge Tunnel
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11
Take the exit slight right toward I 82 East, US 97 South: Yakima
37.8 mi · 43 min
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12
Keep slight left
42 mi · 45 min
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13
Take the exit slight right toward Prosser
2128 ft · 53 sec
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14
Turn right onto Gap Road
591 ft · 16 sec · Gap Road
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15
Continue on Wine Country Road
1.2 mi · 3 min · Wine Country Road
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16
Turn right onto 7th Street
1127 ft · 38 sec · 7th Street
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17
Turn left onto Bennett Avenue
22 m · 3 sec · Bennett Avenue
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18
Arrive at your destination
0 m · 1 sec · Bennett Avenue
Car Route Details
A richer read on the saved driving route between Seattle and Prosser.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Mount Baker Ridge Tunnel
Keep slight left to continue on Mount Baker Ridge Tunnel
107 mi · 02h 00m
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 Seattle and Slight Chance Light Rain then Mostly Sunny near Prosser.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Seattle to Prosser?
The road trip is about 191.3 miles (307.9 km) and usually takes 03h 36m 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 95.5 miles from Seattle and 95.8 miles from Prosser.
How much longer is the road route than the straight-line distance?
The direct path is about 154.8 miles (249.2 km), while the road route adds roughly 36.5 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 9:46 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.32 one way or $70.65 round trip. Estimated CO2 is about 60 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Seattle and Slight Chance Light Rain then Mostly Sunny near Prosser.
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 Seattle and Prosser. Straight-line distance: 154.86 mi (249.23 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 Prosser
County seat of Benton County, Washington
| Population | 6,398 |
| Coordinates | 46.2068000, -119.7689200 |
| Altitude | 203 |
| Country | United States |
End: Prosser (-119.76892, 46.2068)
Estimated Travel Time
Distance: 308 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 06h 22m |
| 40 mph (64.37 km/h) | 04h 46m |
| 50 mph (80.47 km/h) | 03h 49m |
| 60 mph (96.56 km/h) | 03h 11m |
| 70 mph (112.65 km/h) | 02h 43m |
| 80 mph (129 km/h) | 02h 23m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $35.32 | $70.65 |
| Mid-grade | $5.57 | $37.58 | $75.15 |
| Premium | $5.77 | $38.95 | $77.91 |
| Diesel | $5.47 | $36.90 | $73.80 |
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.