How far is O'Fallon, IL from Springfield, IL?
The driving distance from O'Fallon, IL to Springfield, IL is about 96.5 miles (155.3 km), with a travel time of about 01h 35m by car.
- The straight-line flight distance is about 84.8 miles (136.4 km).
- For a round trip, plan for roughly 03h 10m 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 35m.
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.
Human settlement in Macoupin County, Illinois, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Scattered Showers And Thunderstorms then Mostly Sunny
Driving Route Map
The map below follows the saved road route between O'Fallon and Springfield.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Springfield.
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1
Start on West State Street
1.5 km · 2 min · West State Street
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2
Enter the roundabout and take exit 2 toward West State Street
22 m · 3 sec · West State Street
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3
Exit the roundabout onto West State Street
998 ft · 28 sec · West State Street
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4
Turn right onto West Highway 50
2559 ft · 51 sec · West Highway 50
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5
Take the ramp slight right
2098 ft · 51 sec
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6
Merge slight left
1.8 mi · 2 min
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7
Take the exit slight right toward IL 159: Belleville, Collinsville
1536 ft · 29 sec
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8
Keep slight right to continue on Collinsville
67 m · 5 sec
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9
Turn straight onto North Illinois Street
3.8 mi · 6 min · North Illinois Street
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10
Continue on South Morrison Avenue
1.3 mi · 2 min · South Morrison Avenue
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11
Continue on Vandalia Street
2.8 mi · 5 min · Vandalia Street
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12
Take the ramp slight right toward I 55 North, I 70 East
2235 ft · 55 sec
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13
Merge slight left
3.8 mi · 4 min
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14
Keep slight left to continue on I 55 North, I 270 West: Chicago, Springfield, Kansas City
72.8 mi · 1 hr 18 min
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15
Take the exit slight left toward I 55 Business North: Springfield
1.1 km · 1 min
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16
Keep slight left to continue on I 55 Business North: Springfield
891 ft · 17 sec
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17
Keep slight left to continue on I 55 Business North: Springfield
3.8 mi · 9 min
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18
Continue on East Old State Capitol Plaza
125 m · 16 sec · East Old State Capitol Plaza
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19
Turn right onto East Washington Street
1169 ft · 37 sec · East Washington Street
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20
Arrive at your destination
0 m · 1 sec · East Washington Street
Car Route Details
A richer read on the saved driving route between O'Fallon and Springfield.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 55 North
Keep slight left to continue on I 55 North, I 270 West: Chicago, Springfield, Kansas City
72.8 mi · 01h 18m
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.
Sunny leaving O'Fallon and Scattered Showers And Thunderstorms then Mostly Sunny near Springfield.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Springfield?
The road trip is about 96.5 miles (155.3 km) and usually takes 01h 35m 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?
Lake Ka-Ho is a useful midpoint, sitting about 47 miles from O'Fallon and 49.5 miles from Springfield.
How much longer is the road route than the straight-line distance?
The direct path is about 84.8 miles (136.4 km), while the road route adds roughly 11.7 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 3:20 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.86 one way or $25.72 round trip. Estimated CO2 is about 30.3 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around O'Fallon and Scattered Showers And Thunderstorms then Mostly Sunny near Springfield.
Stop Ideas Near Lake Ka-Ho
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 Lake Ka-Ho.
Carlinville
Alton
Gateway Transportation Center
Springfield station
Flight Path Map
This map shows the direct air route between O'Fallon and Springfield. Straight-line distance: 84.79 mi (136.45 km).
#1 O'Fallon
Township in St.
| Population | 29,606 |
| Coordinates | 38.5922700, -89.9112100 |
| Altitude | 167 |
| Country | United States |
#2 Springfield
The capital of Illinois and the county seat of Sangamon County.
| Population | 113,671 |
| Coordinates | 39.8017200, -89.6437100 |
| Altitude | 182 |
| Country | United States |
End: East Washington Street (-89.643712, 39.801639)
Estimated Travel Time
Distance: 155 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 12m |
| 40 mph (64.37 km/h) | 02h 24m |
| 50 mph (80.47 km/h) | 01h 55m |
| 60 mph (96.56 km/h) | 01h 36m |
| 70 mph (112.65 km/h) | 01h 22m |
| 80 mph (129 km/h) | 01h 12m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $12.86 | $25.72 |
| Mid-grade | $4.25 | $14.50 | $29.01 |
| Premium | $4.65 | $15.87 | $31.74 |
| Diesel | $5.30 | $18.09 | $36.17 |
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 Illinois · Apr 22, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.