How far is Steelville, MO from O'Fallon, MO?
The driving distance from Steelville, MO to O'Fallon, MO is about 86.6 miles (139.4 km), with a travel time of about 01h 40m by car.
- The straight-line flight distance is about 68.2 miles (109.7 km).
- For a round trip, plan for roughly 03h 21m 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 40m.
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.
City in Franklin County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Steelville and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Steelville and O'Fallon.
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1
Start on Main Street
8.4 mi · 13 min · Main Street
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2
Take the ramp right toward I 44 East: Saint Louis
1084 ft · 26 sec
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3
Merge slight left
44.6 mi · 48 min
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4
Take the exit slight right toward I 44 Business, MO 100 East: Gray Summit
970 ft · 28 sec
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5
Turn left onto Manchester Road
13.4 mi · 19 min · Manchester Road
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6
Take the exit slight right toward MO 109
1108 ft · 31 sec
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7
Enter the roundabout and take exit 3 toward the route
68 m · 4 sec
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8
Exit the roundabout
157 m · 11 sec
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9
Enter the roundabout and take exit 1 toward the route
30 m · 2 sec
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10
Exit the roundabout
2129 ft · 45 sec
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11
Enter the roundabout and take exit 2 toward the route
29 m · 2 sec
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12
Exit the roundabout
4.3 mi · 7 min
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13
Enter the roundabout and take exit 2 toward South Eatherton Road
29 m · 1 sec · South Eatherton Road
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14
Exit the roundabout onto South Eatherton Road
2.4 mi · 5 min · South Eatherton Road
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15
Continue on Olive Street Road
1.5 km · 2 min · Olive Street Road
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16
Take the ramp left toward Chesterfield Airport Road
1.1 km · 1 min · Chesterfield Airport Road
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17
Merge slight left onto Avenue of the Saints
3.1 mi · 4 min · Avenue of the Saints
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18
Take the exit slight right toward MO K: O'Fallon
100 m · 6 sec
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19
Merge slight right onto North Outer Road
1650 ft · 31 sec · North Outer Road
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20
Continue on North Outer Road
946 ft · 18 sec · North Outer Road
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21
Turn right
3.3 mi · 5 min
-
22
Continue straight
1.5 mi · 3 min
-
23
Continue straight
1.6 mi · 3 min
-
24
Continue on South Main Street
3115 ft · 2 min · South Main Street
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25
Turn right
8 m · 2 sec
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26
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Steelville and O'Fallon.
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.
I 44 East
Merge slight left
44.6 mi · 00h 48m
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.
Showers And Thunderstorms Likely leaving Steelville and Showers And Thunderstorms near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Steelville to O'Fallon?
The road trip is about 86.6 miles (139.4 km) and usually takes 01h 40m 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?
Saint Clair is a useful midpoint, sitting about 43.2 miles from Steelville and 43.4 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 68.2 miles (109.7 km), while the road route adds roughly 18.4 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 3:08 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.54 one way or $23.08 round trip. Estimated CO2 is about 27.2 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Steelville and Showers And Thunderstorms near O'Fallon.
Stop Ideas Near Saint Clair
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 Saint Clair.
Washington
Hermann
Kirkwood
Gateway Transportation Center
Flight Path Map
This map shows the direct air route between Steelville and O'Fallon. Straight-line distance: 68.17 mi (109.71 km).
#1 Steelville
City in Crawford County, Missouri, United States
| Population | 1,636 |
| Coordinates | 37.9681000, -91.3548700 |
| Altitude | 228 |
| Country | United States |
#2 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
End: (-90.699849, 38.810674)
Estimated Travel Time
Distance: 139 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 53m |
| 40 mph (64.37 km/h) | 02h 09m |
| 50 mph (80.47 km/h) | 01h 43m |
| 60 mph (96.56 km/h) | 01h 26m |
| 70 mph (112.65 km/h) | 01h 14m |
| 80 mph (129 km/h) | 01h 04m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $11.54 | $23.08 |
| Mid-grade | $4.25 | $13.01 | $26.03 |
| Premium | $4.65 | $14.24 | $28.48 |
| Diesel | $5.30 | $16.23 | $32.46 |
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 Missouri · Apr 19, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.