How far is Colfax, WI from City of Janesville, WI?
The driving distance from Colfax, WI to City of Janesville, WI is about 233.2 miles (375.3 km), with a travel time of about 03h 38m by car.
- The straight-line flight distance is about 209.3 miles (336.8 km).
- For a round trip, plan for roughly 07h 16m 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 03h 38m.
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.
Village in Richland County, Wisconsin
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Colfax and City of Janesville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Colfax and City of Janesville.
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1
Start on Main Street
2597 ft · 1 min · Main Street
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2
Continue on State Highway 40
7.5 mi · 10 min · State Highway 40
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3
Turn left
1.3 mi · 2 min
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4
Turn left
2083 ft · 51 sec
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5
Merge slight left
186.5 mi · 3 hr 20 min
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6
Keep slight right to continue on I 39, I 90: Chicago
33.1 mi · 35 min
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7
Take the exit slight right
1240 ft · 30 sec
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8
Keep slight right to continue on WI 26: State Highway 26
1117 ft · 32 sec
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9
Keep slight right to continue on WI 26 South: Janesville
126 m · 10 sec
-
10
Turn slight right onto Milton Avenue
2.3 mi · 5 min · Milton Avenue
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11
Turn left onto East Memorial Drive
80 m · 12 sec · East Memorial Drive
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12
Continue on North Garfield Avenue
2552 ft · 2 min · North Garfield Avenue
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13
Turn right onto East Court Street
142 m · 16 sec · East Court Street
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14
Arrive at your destination
0 m · 1 sec · East Court Street
Car Route Details
A richer read on the saved driving route between Colfax and City of Janesville.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
State Highway 40
Merge slight left
187 mi · 03h 20m
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.
Mostly Sunny leaving Colfax and Chance Rain Showers near City of Janesville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Colfax to City of Janesville?
The road trip is about 233.2 miles (375.3 km) and usually takes 03h 38m 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?
Lone Rock is a useful midpoint, sitting about 116.3 miles from Colfax and 116.9 miles from City of Janesville.
How much longer is the road route than the straight-line distance?
The direct path is about 209.3 miles (336.8 km), while the road route adds roughly 23.9 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 9:44 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $31.04 one way or $62.07 round trip. Estimated CO2 is about 73.1 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Colfax and Chance Rain Showers near City of Janesville.
Stop Ideas Near Lone Rock
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 Lone Rock.
Tomah
Wisconsin Dells
Wisconsin Rapids, WI
Westfield, WI
Flight Path Map
This map shows the direct air route between Colfax and City of Janesville. Straight-line distance: 209.25 mi (336.75 km).
#1 Colfax
Village in Dunn County, Wisconsin
| Population | 1,244 |
| Coordinates | 44.9974600, -91.7271200 |
| Altitude | 288 |
| Country | United States |
#2 City of Janesville
The most populous city in Rock County, Wisconsin.
| Population | 64,128 |
| Coordinates | 42.6857000, -89.0138500 |
| Altitude | 261 |
| Country | United States |
End: East Court Street (-89.013903, 42.685777)
Estimated Travel Time
Distance: 375 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 46m |
| 40 mph (64.37 km/h) | 05h 49m |
| 50 mph (80.47 km/h) | 04h 39m |
| 60 mph (96.56 km/h) | 03h 53m |
| 70 mph (112.65 km/h) | 03h 19m |
| 80 mph (129 km/h) | 02h 54m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $31.04 | $62.07 |
| Mid-grade | $4.25 | $35.00 | $70.00 |
| Premium | $4.65 | $38.30 | $76.60 |
| Diesel | $5.30 | $43.65 | $87.30 |
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.