How far is Fulton, MO from O'Fallon, MO?
The driving distance from Fulton, MO to O'Fallon, MO is about 78.9 miles (126.9 km), with a travel time of about 01h 12m by car.
- The straight-line flight distance is about 67.2 miles (108.2 km).
- For a round trip, plan for roughly 02h 25m 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 12m.
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.
Human settlement in Montgomery County, Missouri, United States of America
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 Fulton and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Fulton and O'Fallon.
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1
Start on Court Street
7 m · 6 sec · Court Street
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2
Turn left onto East 4th Street
81 m · 19 sec · East 4th Street
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3
Turn left onto Market Street
1429 ft · 24 sec · Market Street
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4
Continue on Saint Louis Avenue
873 ft · 16 sec · Saint Louis Avenue
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5
Turn left onto North Bluff Street
6.3 mi · 8 min · North Bluff Street
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6
Take the exit slight right toward I 70 East, US 40 East: Saint Louis
1220 ft · 15 sec
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7
Merge slight left onto Dwight D. Eisenhower Highway
69.2 mi · 1 hr 20 min · Dwight D. Eisenhower Highway
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8
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
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9
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
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10
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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11
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
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12
Continue on South Main Street
3115 ft · 2 min · South Main Street
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13
Turn right
8 m · 2 sec
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14
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Fulton and O'Fallon.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
Dwight D. Eisenhower Highway
Merge slight left onto Dwight D. Eisenhower Highway
69.2 mi · 01h 20m
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 Fulton 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 Fulton to O'Fallon?
The road trip is about 78.9 miles (126.9 km) and usually takes 01h 12m 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?
High Hill is a useful midpoint, sitting about 38.5 miles from Fulton and 40.3 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 67.2 miles (108.2 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 4:04 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $10.48 one way or $20.97 round trip. Estimated CO2 is about 24.7 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny then Slight Chance Showers And Thunderstorms around Fulton and Mostly Sunny near O'Fallon.
Stop Ideas Near High Hill
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Warrenton City Animal Control
Warrenton City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to High Hill.
Hermann
Washington
Jefferson City
Kirkwood
Flight Path Map
This map shows the direct air route between Fulton and O'Fallon. Straight-line distance: 67.23 mi (108.19 km).
#1 Fulton
City in and county seat of Callaway County, Missouri
| Population | 12,549 |
| Coordinates | 38.8467100, -91.9479600 |
| Altitude | 233 |
| 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: 127 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 37m |
| 40 mph (64.37 km/h) | 01h 58m |
| 50 mph (80.47 km/h) | 01h 34m |
| 60 mph (96.56 km/h) | 01h 18m |
| 70 mph (112.65 km/h) | 01h 07m |
| 80 mph (129 km/h) | 00h 59m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $10.48 | $20.97 |
| Mid-grade | $4.25 | $11.82 | $23.65 |
| Premium | $4.65 | $12.94 | $25.88 |
| Diesel | $5.30 | $14.75 | $29.49 |
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.