How far is Linn, MO from O'Fallon, MO?
The driving distance from Linn, MO to O'Fallon, MO is about 92.1 miles (148.2 km), with a travel time of about 01h 44m by car.
- The straight-line flight distance is about 66 miles (106.2 km).
- For a round trip, plan for roughly 03h 29m 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 44m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Village in Missouri, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny then Slight Chance Showers And Thunderstorms
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Linn and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Linn and O'Fallon.
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1
Start on East Benton Street
14 m · 4 sec · East Benton Street
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2
Turn right onto North 4th Street
80 m · 17 sec · North 4th Street
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3
Turn left onto East Main Street
55.9 mi · 1 hr 5 min · East Main Street
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4
Turn left
11.1 mi · 17 min
-
5
Turn right
1.2 km · 2 min
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6
Continue straight
3.5 mi · 6 min
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7
At the end of the road, turn left
3.1 mi · 4 min
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8
Continue straight
4.9 mi · 7 min
-
9
Turn left
7.2 mi · 11 min
-
10
Take the ramp right toward I 70 East, US 40 East: Saint Louis
959 ft · 13 sec
-
11
Merge slight left onto Dwight D Eisenhower Highway
7.8 mi · 9 min · Dwight D Eisenhower Highway
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12
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
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13
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
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14
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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15
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
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16
Continue on South Main Street
3115 ft · 2 min · South Main Street
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17
Turn right
8 m · 2 sec
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18
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Linn and O'Fallon.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
East Main Street
Turn left onto East Main Street
55.9 mi · 01h 05m
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.
Mostly Sunny then Slight Chance Showers And Thunderstorms leaving Linn and Mostly Sunny near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Linn to O'Fallon?
The road trip is about 92.1 miles (148.2 km) and usually takes 01h 44m 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?
Leslie is a useful midpoint, sitting about 47.7 miles from Linn and 44.4 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 66 miles (106.2 km), while the road route adds roughly 26.1 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 3:00 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $12.26 one way or $24.51 round trip. Estimated CO2 is about 28.9 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Linn and Mostly Sunny near O'Fallon.
Stop Ideas Near Leslie
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 Leslie.
Washington
Hermann
Kirkwood
Jefferson City
Flight Path Map
This map shows the direct air route between Linn and O'Fallon. Straight-line distance: 66.01 mi (106.24 km).
#1 Linn
City in Missouri
| Population | 1,557 |
| Coordinates | 38.4858700, -91.8504500 |
| Altitude | 258 |
| 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: 148 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 03h 04m |
| 40 mph (64.37 km/h) | 02h 18m |
| 50 mph (80.47 km/h) | 01h 50m |
| 60 mph (96.56 km/h) | 01h 32m |
| 70 mph (112.65 km/h) | 01h 18m |
| 80 mph (129 km/h) | 01h 08m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $12.26 | $24.51 |
| Mid-grade | $4.25 | $13.82 | $27.64 |
| Premium | $4.65 | $15.13 | $30.25 |
| Diesel | $5.30 | $17.24 | $34.48 |
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 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.