How far is Kansas City, MO from O'Fallon, MO?
Fastest route
To get from Kansas City, Missouri, to O'Fallon, Missouri, the fastest route is via I-70 E, covering a distance of 216 miles (348 kilometers). The estimated travel time is approximately 3 hours and 4 minutes.
Directions
- Head east toward McGee St.
- Turn left at the 1st cross street onto E 12th St.
- Turn right onto Charlotte St.
- Turn left to merge onto I-70 E.
- Follow I-70 E to State Hwy K/Main St in O'Fallon.
- Take exit 217 for State Hwy K/Main St toward O'Fallon.
- Keep left at the fork to continue toward State Hwy K/Main St, then turn left onto State Hwy K/Main St. Continue to follow Main St. Pass by Firestone Complete Auto Care (on the right in 0.2 mi).
Tips & Suggestions
- 🚗 Plan ahead and check for traffic conditions to choose the fastest route.
- ⛽ Consider refueling your vehicle before embarking on the journey.
- 🍽️ Pack some snacks and drinks for the road.
- 🚿 Take breaks during the trip to stretch and freshen up.
- 📱 Bring a GPS or a navigation app to stay on track.
- 🛣️ Stay alert and follow traffic rules for a safe journey.
- 🚀 Enjoy the scenic drive and make some lasting memories along the way.
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 13m.
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.
City in Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Kansas City and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Kansas City and O'Fallon.
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1
Start on Oak Street
6 m · 5 sec · Oak Street
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2
Turn right onto East 12th Street
1308 ft · 42 sec · East 12th Street
-
3
Turn right onto Charlotte Street
145 m · 12 sec · Charlotte Street
-
4
Take the ramp straight toward I 70 East, US 40 East
1164 ft · 28 sec
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5
Merge slight left onto George Brett Super Highway
6.9 mi · 9 min · George Brett Super Highway
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6
Continue on Truman/Eisenhower Presidential Highway
2.9 mi · 3 min · Truman/Eisenhower Presidential Highway
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7
Continue on Clifton J. Scott Memorial Highway
1.8 mi · 2 min · Clifton J. Scott Memorial Highway
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8
Continue on Truman/Eisenhower Presidential Highway
2.6 mi · 3 min · Truman/Eisenhower Presidential Highway
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9
Continue on Dwight D. Eisenhower Highway
52.5 mi · 57 min · Dwight D. Eisenhower Highway
-
10
Continue on U.S. Submarine Veterans' Memorial Highway
32 mi · 34 min · U.S. Submarine Veterans' Memorial Highway
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11
Keep slight left to continue on U.S. Submarine Veterans' Memorial Highway
22.4 mi · 24 min · U.S. Submarine Veterans' Memorial Highway
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12
Continue on Dwight D. Eisenhower Highway
1.8 mi · 2 min · Dwight D. Eisenhower Highway
-
13
Continue on Highway Patrol Sgt. Benjamin Booth Memorial Highway
1.6 mi · 2 min · Highway Patrol Sgt. Benjamin Booth Memorial Highway
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14
Continue on Sheriff Roger I. Wilson Memorial Highway
1.9 mi · 2 min · Sheriff Roger I. Wilson Memorial Highway
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15
Continue on Dwight D. Eisenhower Highway
88.2 mi · 1 hr 44 min · Dwight D. Eisenhower Highway
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16
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
-
17
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
-
18
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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19
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
-
20
Continue on South Main Street
3115 ft · 2 min · South Main Street
-
21
Turn right
8 m · 2 sec
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22
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Kansas City 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
Continue on Dwight D. Eisenhower Highway
88.2 mi · 01h 44m
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 Kansas City and Sunny near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Kansas City to O'Fallon?
The road trip is about 216.2 miles (347.9 km) and usually takes 03h 13m 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?
Rocheport is a useful midpoint, sitting about 107.9 miles from Kansas City and 108.2 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 209.3 miles (336.9 km), while the road route adds roughly 6.9 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 10:32 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.77 one way or $57.55 round trip. Estimated CO2 is about 67.8 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Kansas City and Sunny near O'Fallon.
Stop Ideas Near Rocheport
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 Rocheport.
Jefferson City
Sedalia
Hermann
Warrensburg
Flight Path Map
This map shows the direct air route between Kansas City and O'Fallon. Straight-line distance: 209.34 mi (336.9 km).
#1 Kansas City
The third most populous city in Missouri and the center of the Kansas City metropolitan area.
| Population | 495,327 |
| Coordinates | 39.0997300, -94.5785700 |
| Altitude | 274 |
| 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: 348 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 12m |
| 40 mph (64.37 km/h) | 05h 24m |
| 50 mph (80.47 km/h) | 04h 19m |
| 60 mph (96.56 km/h) | 03h 36m |
| 70 mph (112.65 km/h) | 03h 05m |
| 80 mph (129 km/h) | 02h 41m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $28.77 | $57.55 |
| Mid-grade | $4.25 | $32.45 | $64.90 |
| Premium | $4.65 | $35.51 | $71.02 |
| Diesel | $5.30 | $40.47 | $80.94 |
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 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.