How far is Mercer Island, WA from Spokane, WA?
The driving distance from Mercer Island, WA to Spokane, WA is about 273.7 miles (440.4 km), with a travel time of about 04h 20m by car.
- The straight-line flight distance is about 223.3 miles (359.3 km).
- For a round trip, plan for roughly 08h 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 04h 20m.
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 Washington, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Light Rain
Partly Sunny
Driving Route Map
The map below follows the saved road route between Mercer Island and Spokane.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mercer Island and Spokane.
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1
Start on Southeast 42nd Street
539 ft · 28 sec · Southeast 42nd Street
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2
At the end of the road, turn right onto 86th Avenue Southeast
1325 ft · 49 sec · 86th Avenue Southeast
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3
Turn right onto Southeast 40th Street
1344 ft · 44 sec · Southeast 40th Street
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4
Turn left onto Gallagher Hill Road
1478 ft · 41 sec · Gallagher Hill Road
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5
Continue on Southeast 36th Street
2209 ft · 1 min · Southeast 36th Street
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6
Take the ramp straight toward I 90 East
1819 ft · 46 sec
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7
Merge slight left onto East Channel Bridge
269.2 mi · 4 hr 53 min · East Channel Bridge
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8
Merge slight right
1.8 mi · 2 min
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9
Take the exit slight right toward Maple Street, Lincoln Street, Walnut Street
1203 ft · 31 sec
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10
Continue on West 5th Avenue
117 m · 13 sec · West 5th Avenue
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11
Turn straight onto West Freeway Avenue
1151 ft · 33 sec · West Freeway Avenue
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12
Continue on West 4th Avenue
1027 ft · 31 sec · West 4th Avenue
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13
Continue on West 4th Avenue
51 m · 5 sec · West 4th Avenue
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14
Continue on South Lincoln Street
2275 ft · 1 min · South Lincoln Street
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15
Turn left onto West Main Avenue
846 ft · 35 sec · West Main Avenue
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16
Turn right
8 m · 9 sec
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17
Turn left onto South Gorge Trail
48 m · 17 sec · South Gorge Trail
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18
Arrive at your destination
0 m · 1 sec · South Gorge Trail
Car Route Details
A richer read on the saved driving route between Mercer Island and Spokane.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
East Channel Bridge
Merge slight left onto East Channel Bridge
269 mi · 04h 53m
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 Light Rain leaving Mercer Island and Partly Sunny near Spokane.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mercer Island to Spokane?
The road trip is about 273.7 miles (440.4 km) and usually takes 04h 20m 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?
George is a useful midpoint, sitting about 136.7 miles from Mercer Island and 136.9 miles from Spokane.
How much longer is the road route than the straight-line distance?
The direct path is about 223.3 miles (359.3 km), while the road route adds roughly 50.4 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 8:20 AM PDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $50.55 one way or $101.10 round trip. Estimated CO2 is about 85.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Light Rain around Mercer Island and Partly Sunny near Spokane.
Stop Ideas Near George
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 George.
Quincy, Washington
Ephrata, WA
Ephrata
Moses Lake, Washington
Flight Path Map
This map shows the direct air route between Mercer Island and Spokane. Straight-line distance: 223.29 mi (359.35 km).
#1 Mercer Island
Island in the United States of America
| Population | 25,912 |
| Coordinates | 47.5706500, -122.2220700 |
| Altitude | 102 |
| Country | United States |
#2 Spokane
The second most populous city in Washington.
| Population | 222,050 |
| Coordinates | 47.6596600, -117.4290800 |
| Altitude | 571 |
| Country | United States |
End: West Main Avenue (-117.429081, 47.659029)
Estimated Travel Time
Distance: 440 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 07m |
| 40 mph (64.37 km/h) | 06h 50m |
| 50 mph (80.47 km/h) | 05h 28m |
| 60 mph (96.56 km/h) | 04h 33m |
| 70 mph (112.65 km/h) | 03h 54m |
| 80 mph (129 km/h) | 03h 24m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $5.23 | $50.55 | $101.10 |
| Mid-grade | $5.57 | $53.78 | $107.55 |
| Premium | $5.77 | $55.75 | $111.50 |
| Diesel | $5.47 | $52.81 | $105.62 |
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 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.