How far is West Allis, WI from Big Flats, WI?
The driving distance from West Allis, WI to Big Flats, WI is about 156.2 miles (251.3 km), with a travel time of about 02h 58m by car.
- The straight-line flight distance is about 117.7 miles (189.4 km).
- For a round trip, plan for roughly 05h 56m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
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 02h 58m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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.
Village in Dane County, Wisconsin
Route Weather Snapshot
Check the forecast at both ends before you head out.
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between West Allis and Big Flats.
Turn-by-Turn Driving Directions
Step-by-step road directions between West Allis and Big Flats.
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1
Start on West Greenfield Avenue
1.4 mi · 4 min · West Greenfield Avenue
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2
Take the ramp slight right toward I 894 West, US 45 North
907 ft · 24 sec
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3
Keep slight left to continue on I 94: Madison, Milwaukee
751 ft · 18 sec
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4
Merge slight left onto Zoo Freeway
6 m · 1 sec · Zoo Freeway
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5
Take the exit slight right toward I 94 West, I 94 East: Madison, Milwaukee
937 ft · 16 sec
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6
Keep slight left to continue on I 94 West: Madison
3267 ft · 56 sec
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7
Keep slight left to continue on I 94 West: Madison
665 ft · 11 sec
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8
Merge slight left onto East-West Freeway
10.2 mi · 12 min · East-West Freeway
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9
Keep slight left to continue on East-West Freeway
53.5 mi · 57 min · East-West Freeway
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10
Keep slight right to continue on I 39 North, I 90 West, I 94 West: Wisconsin Dells, Eau Claire
29.1 mi · 31 min
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11
Keep slight right to continue on WI 78 South, I 39 North: Merrimac, Portage, Wausau
1128 ft · 15 sec
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12
Continue on I 39 North: Portage, Wausau
39.3 mi · 42 min
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13
Take the exit slight right toward WI 21: Coloma, Necedah
1444 ft · 35 sec
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14
Keep slight left
42 m · 3 sec
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15
Turn left onto West Follett Drive
14.7 mi · 20 min · West Follett Drive
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16
Take the exit slight right
54 m · 6 sec
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17
Turn slight right onto State Highway 13
6 mi · 8 min · State Highway 13
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18
Turn right
6 m · 1 sec
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19
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between West Allis and Big Flats.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
East-West Freeway
Keep slight left to continue on East-West Freeway
53.5 mi · 00h 57m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Chance Showers And Thunderstorms then Showers And Thunderstorms Likely leaving West Allis and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Big Flats.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from West Allis to Big Flats?
The road trip is about 156.2 miles (251.3 km) and usually takes 02h 58m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
De Forest is a useful midpoint, sitting about 78 miles from West Allis and 78.2 miles from Big Flats.
How much longer is the road route than the straight-line distance?
The direct path is about 117.7 miles (189.4 km), while the road route adds roughly 38.5 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 12:34 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $20.78 one way or $41.56 round trip. Estimated CO2 is about 49 kg one way.
What should you check before leaving?
Before you leave, expect Chance Showers And Thunderstorms then Showers And Thunderstorms Likely around West Allis and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Big Flats.
Stop Ideas Near De Forest
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 De Forest.
Madison, Wisconsin
Madison (South), Wisconsin
Columbus
Portage
Flight Path Map
This map shows the direct air route between West Allis and Big Flats. Straight-line distance: 117.71 mi (189.43 km).
#1 West Allis
The most populous city in Milwaukee County, Wisconsin.
| Population | 59,748 |
| Coordinates | 43.0166800, -88.0070300 |
| Altitude | 222 |
| Country | United States |
#2 Big Flats
Civil town in Adams County, Wisconsin
| Population | 1,013 |
| Coordinates | 44.1119100, -89.8079000 |
| Altitude | 305 |
| Country | United States |
End: Big Flats (-89.8079, 44.11191)
Estimated Travel Time
Distance: 251 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 05h 12m |
| 40 mph (64.37 km/h) | 03h 54m |
| 50 mph (80.47 km/h) | 03h 07m |
| 60 mph (96.56 km/h) | 02h 36m |
| 70 mph (112.65 km/h) | 02h 13m |
| 80 mph (129 km/h) | 01h 56m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $20.78 | $41.56 |
| Mid-grade | $4.25 | $23.43 | $46.87 |
| Premium | $4.65 | $25.64 | $51.29 |
| Diesel | $5.30 | $29.23 | $58.45 |
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 · Apr 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.