How far is Lee's Summit, MO from O'Fallon, MO?
The driving distance from Lee's Summit, MO to O'Fallon, MO is about 214 miles (344.4 km), with a travel time of about 03h 10m by car.
- The straight-line flight distance is about 198.2 miles (319 km).
- For a round trip, plan for roughly 06h 21m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 6:00 AM to 8:00 AM CDT.
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 10m.
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.
Showers And Thunderstorms Likely
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Lee's Summit and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lee's Summit and O'Fallon.
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1
Start on Southwest 3rd Street
1495 ft · 41 sec · Southwest 3rd Street
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2
Continue on Southeast 3rd Street
109 m · 16 sec · Southeast 3rd Street
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3
Turn left onto Southeast Douglas Street
2.2 mi · 4 min · Southeast Douglas Street
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4
Take the ramp right toward I 470 North: Independence, Saint Louis
1160 ft · 28 sec
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5
Merge slight left onto I 470 North: Saint Louis
7 mi · 8 min
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6
Take the exit slight right toward I 70 East: Saint Louis
2063 ft · 44 sec
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7
Merge slight left onto Truman/Eisenhower Presidential Highway
1.1 mi · 1 min · Truman/Eisenhower Presidential Highway
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8
Continue on Dwight D. Eisenhower Highway
52.5 mi · 57 min · Dwight D. Eisenhower Highway
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9
Continue on U.S. Submarine Veterans' Memorial Highway
32 mi · 34 min · U.S. Submarine Veterans' Memorial Highway
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10
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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11
Continue on Dwight D. Eisenhower Highway
1.8 mi · 2 min · Dwight D. Eisenhower Highway
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12
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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13
Continue on Sheriff Roger I. Wilson Memorial Highway
1.9 mi · 2 min · Sheriff Roger I. Wilson Memorial Highway
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14
Continue on Dwight D. Eisenhower Highway
88.2 mi · 1 hr 44 min · Dwight D. Eisenhower Highway
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15
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
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16
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
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17
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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18
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
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19
Continue on South Main Street
3115 ft · 2 min · South Main Street
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20
Turn right
8 m · 2 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Lee's Summit 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.
Showers And Thunderstorms Likely leaving Lee's Summit 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 Lee's Summit to O'Fallon?
The road trip is about 214 miles (344.4 km) and usually takes 03h 10m 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 106.2 miles from Lee's Summit and 107.8 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 198.2 miles (319 km), while the road route adds roughly 15.8 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 10:38 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $28.47 one way or $56.94 round trip. Estimated CO2 is about 67.1 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around Lee's Summit and Showers And Thunderstorms 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 Lee's Summit and O'Fallon. Straight-line distance: 198.22 mi (319 km).
#1 Lee's Summit
The most populous city in Jackson County, Missouri.
| Population | 101,467 |
| Coordinates | 38.9108400, -94.3821700 |
| Altitude | 316 |
| 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: 344 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 07m |
| 40 mph (64.37 km/h) | 05h 21m |
| 50 mph (80.47 km/h) | 04h 16m |
| 60 mph (96.56 km/h) | 03h 34m |
| 70 mph (112.65 km/h) | 03h 03m |
| 80 mph (129 km/h) | 02h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $28.47 | $56.94 |
| Mid-grade | $4.25 | $32.11 | $64.22 |
| Premium | $4.65 | $35.14 | $70.28 |
| Diesel | $5.30 | $40.05 | $80.09 |
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 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.