How far is City of Janesville, WI from Jefferson, WI?
The driving distance from City of Janesville, WI to Jefferson, WI is about 27.5 miles (44.2 km), with a travel time of about 00h 38m by car.
- The straight-line flight distance is about 24.5 miles (39.4 km).
- For a round trip, plan for roughly 01h 17m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 00h 38m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 Jefferson County, Wisconsin
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between City of Janesville and Jefferson.
Turn-by-Turn Driving Directions
Step-by-step road directions between City of Janesville and Jefferson.
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1
Start on East Court Street
45 m · 6 sec · East Court Street
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2
Turn right onto Harrison Street
156 m · 27 sec · Harrison Street
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3
Turn left onto East Milwaukee Street
841 ft · 21 sec · East Milwaukee Street
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4
Turn sharp right onto Milton Avenue
12.7 mi · 19 min · Milton Avenue
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5
Continue straight
11.9 mi · 14 min
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6
Take the exit slight right toward WI 26 Business: Jefferson
1265 ft · 31 sec
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7
Keep slight right
52 m · 5 sec
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8
Turn right onto State Highway 26 Business
1.4 km · 1 min · State Highway 26 Business
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9
Continue on South Main Street
1.5 mi · 3 min · South Main Street
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10
Arrive at your destination
0 m · 1 sec · North Main Street
Car Route Details
A richer read on the saved driving route between City of Janesville and Jefferson.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Milton Avenue
Turn sharp right onto Milton Avenue
12.7 mi · 00h 19m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Partly Sunny leaving City of Janesville and Mostly Sunny near Jefferson.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from City of Janesville to Jefferson?
The road trip is about 27.5 miles (44.2 km) and usually takes 00h 38m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Koshkonong is a useful midpoint, sitting about 13.7 miles from City of Janesville and 13.7 miles from Jefferson.
How much longer is the road route than the straight-line distance?
The direct path is about 24.5 miles (39.4 km), while the road route adds roughly 3 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:12 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.66 one way or $7.32 round trip. Estimated CO2 is about 8.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around City of Janesville and Mostly Sunny near Jefferson.
Stop Ideas Near Koshkonong
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 Koshkonong.
Janesville, Wisconsin
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Madison, Wisconsin
Flight Path Map
This map shows the direct air route between City of Janesville and Jefferson. Straight-line distance: 24.45 mi (39.35 km).
#1 City of Janesville
The most populous city in Rock County, Wisconsin.
| Population | 64,128 |
| Coordinates | 42.6857000, -89.0138500 |
| Altitude | 261 |
| Country | United States |
#2 Jefferson
City in and county seat of Jefferson County, Wisconsin
| Population | 1,225 |
| Coordinates | 43.0055600, -88.8073300 |
| Altitude | 244 |
| Country | United States |
End: Jefferson (-88.80733, 43.00556)
Estimated Travel Time
Distance: 44 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 54m |
| 40 mph (64.37 km/h) | 00h 41m |
| 50 mph (80.47 km/h) | 00h 32m |
| 60 mph (96.56 km/h) | 00h 27m |
| 70 mph (112.65 km/h) | 00h 23m |
| 80 mph (129 km/h) | 00h 20m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.66 | $7.32 |
| Mid-grade | $4.25 | $4.13 | $8.25 |
| Premium | $4.65 | $4.51 | $9.03 |
| Diesel | $5.30 | $5.14 | $10.29 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.