How far is Wauwatosa, WI from Mercer, WI?
The driving distance from Wauwatosa, WI to Mercer, WI is about 279.9 miles (450.5 km), with a travel time of about 05h 40m by car.
- The straight-line flight distance is about 237.8 miles (382.7 km).
- For a round trip, plan for roughly 11h 20m 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 05h 40m.
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.
Chance Rain Showers
Partly Sunny
Driving Route Map
The map below follows the saved road route between Wauwatosa and Mercer.
Turn-by-Turn Driving Directions
Step-by-step road directions between Wauwatosa and Mercer.
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1
Start on West State Street
42 m · 6 sec · West State Street
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2
Continue on West Menomonee River Parkway
110 m · 22 sec · West Menomonee River Parkway
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3
Turn left onto Harmonee Avenue
876 ft · 30 sec · Harmonee Avenue
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4
Turn slight right onto Harwood Avenue
1462 ft · 39 sec · Harwood Avenue
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5
Continue on West Watertown Plank Road
1.4 km · 2 min · West Watertown Plank Road
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6
Take the ramp slight right toward I 41 South, US 45 South: Milwaukee, Beloit, Madison, Appleton
758 ft · 18 sec
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7
Keep slight left to continue on I 41, US 45 North: Fond du Lac
2562 ft · 1 min
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8
Merge slight left onto Zoo Freeway
18.2 mi · 22 min · Zoo Freeway
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9
Keep slight left to continue on US 41 North: Fond du Lac, Appleton
61.6 mi · 1 hr 6 min
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10
Take the exit slight right toward US 45: New London, Algoma Boulevard
929 ft · 23 sec
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11
Keep slight left to continue on US 45 North: New London
1.3 km · 58 sec
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12
Merge slight left
15.2 mi · 18 min
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13
Keep slight left to continue on US Highway 10
46.6 mi · 55 min · US Highway 10
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14
Continue on Main Street
1.3 mi · 3 min · Main Street
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15
Take the exit slight right toward I 39 North, US 51 North, US 10 West
6.6 mi · 8 min
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16
Continue straight
23.3 mi · 25 min
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17
Merge slight right
47.8 mi · 55 min
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18
Keep slight left
23.1 mi · 33 min
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19
Turn slight right onto Chippewa Street
33.2 mi · 50 min · Chippewa Street
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20
Arrive at your destination
0 m · 1 sec · US 51
Car Route Details
A richer read on the saved driving route between Wauwatosa and Mercer.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
US 41 North
Keep slight left to continue on US 41 North: Fond du Lac, Appleton
61.6 mi · 01h 06m
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 Rain Showers leaving Wauwatosa and Partly Sunny near Mercer.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Wauwatosa to Mercer?
The road trip is about 279.9 miles (450.5 km) and usually takes 05h 40m 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 139.9 miles from Wauwatosa and 140 miles from Mercer.
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 42.1 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 5:40 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $37.26 one way or $74.51 round trip. Estimated CO2 is about 87.8 kg one way.
What should you check before leaving?
Before you leave, expect Chance Rain Showers around Wauwatosa and Partly Sunny near Mercer.
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.
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Flight Path Map
This map shows the direct air route between Wauwatosa and Mercer. Straight-line distance: 237.83 mi (382.75 km).
#1 Wauwatosa
A city in Milwaukee County, Wisconsin.
| Population | 48,084 |
| Coordinates | 43.0494600, -88.0075900 |
| Altitude | 203 |
| Country | United States |
#2 Mercer
Civil town in Iron County, Wisconsin
| Population | 1,387 |
| Coordinates | 46.1655000, -90.0626600 |
| Altitude | 488 |
| Country | United States |
End: Mercer (-90.06266, 46.1655)
Estimated Travel Time
Distance: 450 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 09h 19m |
| 40 mph (64.37 km/h) | 06h 59m |
| 50 mph (80.47 km/h) | 05h 35m |
| 60 mph (96.56 km/h) | 04h 39m |
| 70 mph (112.65 km/h) | 03h 59m |
| 80 mph (129 km/h) | 03h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $37.26 | $74.51 |
| Mid-grade | $4.25 | $42.02 | $84.04 |
| Premium | $4.65 | $45.98 | $91.96 |
| Diesel | $5.30 | $52.40 | $104.81 |
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.