How far is Vancouver, WA from Mercer Island, WA?
The driving distance from Vancouver, WA to Mercer Island, WA is about 166.8 miles (268.4 km), with a travel time of about 03h 17m by car.
- The straight-line flight distance is about 135.1 miles (217.4 km).
- For a round trip, plan for roughly 06h 35m 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 17m.
An early departure helps you fit a real stop into the day without turning the return into a late-night drive.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Census designated place
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Cloudy
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Vancouver and Mercer Island.
Turn-by-Turn Driving Directions
Step-by-step road directions between Vancouver and Mercer Island.
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1
Start on East Fourth Plain Boulevard
31 m · 10 sec · East Fourth Plain Boulevard
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2
Take the ramp left toward I 5 North: Seattle
873 ft · 23 sec
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3
Merge slight left
131.7 mi · 2 hr 30 min
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4
Keep slight right
20.7 mi · 26 min
-
5
Take the exit slight right toward WA 518 West, I 405 North: Seattle-Tacoma International Airport, Bellevue
136 m · 11 sec
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6
Keep slight right to continue on I 405 North: Renton, Bellevue
2062 ft · 50 sec
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7
Merge slight left
10.3 mi · 13 min
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8
Take the exit slight right toward I 90: Seattle, Spokane
1281 ft · 31 sec
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9
Keep slight left to continue on I 90 West: Seattle
3035 ft · 1 min
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10
Keep slight right to continue on I 90 West: Seattle, Mercer Island
2260 ft · 55 sec
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11
Merge slight left
2593 ft · 37 sec
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12
Take the exit slight right toward East Mercer Way
1561 ft · 46 sec
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13
Turn left onto East Mercer Way
101 m · 11 sec · East Mercer Way
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14
Turn sharp right onto Southeast 36th Street
2214 ft · 1 min · Southeast 36th Street
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15
Continue on Gallagher Hill Road
1478 ft · 43 sec · Gallagher Hill Road
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16
Turn right onto Southeast 40th Street
1344 ft · 46 sec · Southeast 40th Street
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17
Turn left onto 86th Avenue Southeast
1325 ft · 53 sec · 86th Avenue Southeast
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18
Turn left onto Southeast 42nd Street
539 ft · 24 sec · Southeast 42nd Street
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19
Arrive at your destination
0 m · 1 sec · Southeast 42nd Street
Car Route Details
A richer read on the saved driving route between Vancouver and Mercer Island.
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 5 North
Merge slight left
132 mi · 02h 30m
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 Cloudy leaving Vancouver and Mostly Cloudy near Mercer Island.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Vancouver to Mercer Island?
The road trip is about 166.8 miles (268.4 km) and usually takes 03h 17m 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?
Fords Prairie is a useful midpoint, sitting about 83.3 miles from Vancouver and 83.5 miles from Mercer Island.
How much longer is the road route than the straight-line distance?
The direct path is about 135.1 miles (217.4 km), while the road route adds roughly 31.7 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 10:24 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $30.77 one way or $61.54 round trip. Estimated CO2 is about 52.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Cloudy around Vancouver and Mostly Cloudy near Mercer Island.
Stop Ideas Near Fords Prairie
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 Fords Prairie.
Centralia station
Centennial Station
Kelso Multimodal Transportation Center
Tacoma Dome Station
Flight Path Map
This map shows the direct air route between Vancouver and Mercer Island. Straight-line distance: 135.1 mi (217.43 km).
#1 Vancouver
The third most populous city in Washington.
| Population | 186,192 |
| Coordinates | 45.6387300, -122.6614900 |
| Altitude | 52 |
| Country | United States |
#2 Mercer Island
Island in the United States of America
| Population | 25,912 |
| Coordinates | 47.5706500, -122.2220700 |
| Altitude | 102 |
| Country | United States |
End: Mercer Island (-122.22207, 47.57065)
Estimated Travel Time
Distance: 268 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 33m |
| 40 mph (64.37 km/h) | 04h 10m |
| 50 mph (80.47 km/h) | 03h 20m |
| 60 mph (96.56 km/h) | 02h 46m |
| 70 mph (112.65 km/h) | 02h 22m |
| 80 mph (129 km/h) | 02h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $30.77 | $61.54 |
| Mid-grade | $5.57 | $32.73 | $65.47 |
| Premium | $5.77 | $33.93 | $67.87 |
| Diesel | $5.47 | $32.15 | $64.29 |
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 · Jun 03, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.