How far is West Allis, WI from Sun Prairie, WI?
The driving distance from West Allis, WI to Sun Prairie, WI is about 68 miles (109.4 km), with a travel time of about 01h 20m by car.
- The straight-line flight distance is about 62 miles (99.7 km).
- For a round trip, plan for roughly 02h 40m 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 01h 20m.
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.
Town in Jefferson County, Wisconsin, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between West Allis and Sun Prairie.
Turn-by-Turn Driving Directions
Step-by-step road directions between West Allis and Sun Prairie.
-
1
Start on West Greenfield Avenue
1.4 mi · 4 min · West Greenfield Avenue
-
2
Take the ramp slight right toward I 894 West, US 45 North
907 ft · 24 sec
-
3
Keep slight left to continue on I 94: Madison, Milwaukee
751 ft · 18 sec
-
4
Merge slight left onto Zoo Freeway
6 m · 1 sec · Zoo Freeway
-
5
Take the exit slight right toward I 94 West, I 94 East: Madison, Milwaukee
937 ft · 16 sec
-
6
Keep slight left to continue on I 94 West: Madison
3267 ft · 56 sec
-
7
Keep slight left to continue on I 94 West: Madison
665 ft · 11 sec
-
8
Merge slight left onto East-West Freeway
10.2 mi · 12 min · East-West Freeway
-
9
Keep slight left to continue on East-West Freeway
49.3 mi · 53 min · East-West Freeway
-
10
Take the exit slight right toward CTH N: Sun Prairie, Cottage Grove
1480 ft · 36 sec
-
11
Enter the roundabout and take exit 1 toward County Highway N
5 m · 1 sec · County Highway N
-
12
Exit the roundabout onto County Highway N
150 m · 9 sec · County Highway N
-
13
Enter the roundabout and take exit 2 toward County Highway N
29 m · 2 sec · County Highway N
-
14
Exit the roundabout onto County Highway N
5 mi · 8 min · County Highway N
-
15
Turn left onto East Main Street
2259 ft · 1 min · East Main Street
-
16
Turn right onto North Bristol Street
38 m · 10 sec · North Bristol Street
-
17
Turn left
12 m · 3 sec
-
18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between West Allis and Sun Prairie.
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
49.3 mi · 00h 53m
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.
Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely leaving West Allis and Chance Showers And Thunderstorms near Sun Prairie.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from West Allis to Sun Prairie?
The road trip is about 68 miles (109.4 km) and usually takes 01h 20m 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?
Farmington is a useful midpoint, sitting about 33.9 miles from West Allis and 34.1 miles from Sun Prairie.
How much longer is the road route than the straight-line distance?
The direct path is about 62 miles (99.7 km), while the road route adds roughly 6 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 3:50 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $9.05 one way or $18.10 round trip. Estimated CO2 is about 21.3 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms then Showers And Thunderstorms Likely around West Allis and Chance Showers And Thunderstorms near Sun Prairie.
Stop Ideas Near Farmington
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 Farmington.
Columbus
Beaver Dam, WI
Janesville, Wisconsin
Madison (South), Wisconsin
Flight Path Map
This map shows the direct air route between West Allis and Sun Prairie. Straight-line distance: 61.96 mi (99.71 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 Sun Prairie
Third-class city in Dane County, Wisconsin
| Population | 2,473 |
| Coordinates | 43.1836000, -89.2137300 |
| Altitude | 292 |
| Country | United States |
End: Sun Prairie (-89.21373, 43.1836)
Estimated Travel Time
Distance: 109 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 15m |
| 40 mph (64.37 km/h) | 01h 42m |
| 50 mph (80.47 km/h) | 01h 21m |
| 60 mph (96.56 km/h) | 01h 07m |
| 70 mph (112.65 km/h) | 00h 58m |
| 80 mph (129 km/h) | 00h 50m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $9.05 | $18.10 |
| Mid-grade | $4.25 | $10.21 | $20.41 |
| Premium | $4.65 | $11.17 | $22.34 |
| Diesel | $5.30 | $12.73 | $25.46 |
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 18, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.