How far is Mercer, WI from Wauwatosa, WI?
The driving distance from Mercer, WI to Wauwatosa, WI is about 280.5 miles (451.5 km), with a travel time of about 04h 31m by car.
- The straight-line flight distance is about 237.8 miles (382.7 km).
- For a round trip, plan for roughly 09h 03m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 31m.
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.
Civil town in Portage County, Wisconsin
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Mercer and Wauwatosa.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mercer and Wauwatosa.
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1
Start on US 51
32.8 mi · 49 min · US 51
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2
Continue on Oneida Street
71.1 mi · 1 hr 29 min · Oneida Street
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3
Keep slight left to continue on I 39 South, US 51 South: Stevens Point, Madison
22.5 mi · 24 min
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4
Continue straight
7.4 mi · 8 min
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5
Take the exit slight right toward US 10 East, WI 66 West: Stevens Point, Waupaca, Appleton
2035 ft · 58 sec
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6
Keep slight right to continue on US 10 East: Appleton, Waupaca
50.9 mi · 1 hr 1 min
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7
Keep slight right to continue on US 45 South: Oshkosh
12.3 mi · 14 min
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8
Take the exit slight left toward I 41 South: Milwaukee
1.1 mi · 1 min
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9
Merge slight left
79.5 mi · 1 hr 28 min
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10
Take the exit slight right toward Watertown Plank Road
1234 ft · 30 sec
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11
Keep slight left to continue on Watertown Plank Road East
2865 ft · 1 min
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12
Turn straight onto West Watertown Plank Road
1.1 mi · 3 min · West Watertown Plank Road
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13
Continue on Harwood Avenue
1576 ft · 52 sec · Harwood Avenue
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14
Turn left onto Harmonee Avenue
822 ft · 32 sec · Harmonee Avenue
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15
Turn right onto West Menomonee River Parkway
152 m · 21 sec · West Menomonee River Parkway
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16
Arrive at your destination
0 m · 1 sec · West State Street
Car Route Details
A richer read on the saved driving route between Mercer and Wauwatosa.
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 41 South
Merge slight left
79.5 mi · 01h 28m
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.
Partly Sunny leaving Mercer and Chance Rain Showers near Wauwatosa.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mercer to Wauwatosa?
The road trip is about 280.5 miles (451.5 km) and usually takes 04h 31m 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?
Stockton is a useful midpoint, sitting about 140.2 miles from Mercer and 140.4 miles from Wauwatosa.
How much longer is the road route than the straight-line distance?
The direct path is about 237.8 miles (382.7 km), while the road route adds roughly 42.7 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 CDT. If you want a more comfortable same-day return, try to leave by 7:56 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $37.33 one way or $74.67 round trip. Estimated CO2 is about 88 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around Mercer and Chance Rain Showers near Wauwatosa.
Stop Ideas Near Stockton
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 Stockton.
Stevens Point, WI
Stevens Point, Wisconsin
Wisconsin Rapids, WI
Waupaca, Wisconsin
Flight Path Map
This map shows the direct air route between Mercer and Wauwatosa. Straight-line distance: 237.83 mi (382.75 km).
#1 Mercer
Civil town in Iron County, Wisconsin
| Population | 1,387 |
| Coordinates | 46.1655000, -90.0626600 |
| Altitude | 488 |
| Country | United States |
#2 Wauwatosa
A city in Milwaukee County, Wisconsin.
| Population | 48,084 |
| Coordinates | 43.0494600, -88.0075900 |
| Altitude | 203 |
| Country | United States |
End: West State Street (-88.007649, 43.049316)
Estimated Travel Time
Distance: 452 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 20m |
| 40 mph (64.37 km/h) | 07h 00m |
| 50 mph (80.47 km/h) | 05h 36m |
| 60 mph (96.56 km/h) | 04h 40m |
| 70 mph (112.65 km/h) | 04h 00m |
| 80 mph (129 km/h) | 03h 30m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $37.33 | $74.67 |
| Mid-grade | $4.25 | $42.10 | $84.21 |
| Premium | $4.65 | $46.07 | $92.15 |
| Diesel | $5.30 | $52.51 | $105.02 |
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 Wisconsin · May 05, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.