How far is O'Fallon, MO from Marlborough, MO?
The driving distance from O'Fallon, MO to Marlborough, MO is about 220 miles (354.1 km), with a travel time of about 04h 12m by car.
- The straight-line flight distance is about 208 miles (334.7 km).
- For a round trip, plan for roughly 08h 25m 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 04h 12m.
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 Cooper County, Missouri, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between O'Fallon and Marlborough.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Marlborough.
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1
Start on the route
8 m · 7 sec
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2
Turn left onto South Main Street
3116 ft · 2 min · South Main Street
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3
Turn left onto I 70 East
10 m · 6 sec
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4
Turn sharp left onto South Main Street
87 m · 11 sec · South Main Street
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5
Turn left onto West Terra Lane
576 ft · 12 sec · West Terra Lane
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6
Take the ramp straight toward I 70 West
146 m · 7 sec
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7
Merge slight left
200.7 mi · 3 hr 46 min
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8
Continue on Truman/Eisenhower Presidential Highway
2.7 mi · 3 min · Truman/Eisenhower Presidential Highway
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9
Continue on Clifton J. Scott Memorial Highway
1.8 mi · 2 min · Clifton J. Scott Memorial Highway
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10
Continue on Truman/Eisenhower Presidential Highway
2.9 mi · 3 min · Truman/Eisenhower Presidential Highway
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11
Continue on George Brett Super Highway
1.1 mi · 1 min · George Brett Super Highway
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12
Take the exit slight right toward I 435 South: Wichita
1955 ft · 48 sec
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13
Merge slight left onto Lamar Hunt Memorial Highway
6.8 mi · 8 min · Lamar Hunt Memorial Highway
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14
Take the exit slight right toward East 87th Street
1164 ft · 25 sec
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15
Enter the roundabout and take exit 2 toward East 87th Street
57 m · 4 sec · East 87th Street
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16
Exit the roundabout onto East 87th Street
1.5 mi · 3 min · East 87th Street
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17
Turn left onto Manchester Trafficway
894 ft · 22 sec · Manchester Trafficway
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18
Continue on East 85th Street
1.2 km · 2 min · East 85th Street
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19
Turn right onto Park Avenue
1515 ft · 1 min · Park Avenue
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20
Arrive at your destination
0 m · 1 sec · East 83rd Terrace
Car Route Details
A richer read on the saved driving route between O'Fallon and Marlborough.
Highway-focused drive
Most of the mileage stays on named highways, so the important moments are ramps, exits, merges, and the final local approach.
I 70 West
Merge slight left
201 mi · 03h 46m
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.
Sunny leaving O'Fallon and Sunny near Marlborough.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Marlborough?
The road trip is about 220 miles (354.1 km) and usually takes 04h 12m 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?
Boonville is a useful midpoint, sitting about 109.8 miles from O'Fallon and 110.2 miles from Marlborough.
How much longer is the road route than the straight-line distance?
The direct path is about 208 miles (334.7 km), while the road route adds roughly 12 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 8:34 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.26 one way or $58.53 round trip. Estimated CO2 is about 69 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around O'Fallon and Sunny near Marlborough.
Stop Ideas Near Boonville
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 Boonville.
Sedalia
Jefferson City
Warrensburg
Hermann
Flight Path Map
This map shows the direct air route between O'Fallon and Marlborough. Straight-line distance: 208 mi (334.75 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Marlborough
Village in St.
| Population | 2,142 |
| Coordinates | 38.9766700, -94.5621800 |
| Altitude | 266 |
| Country | United States |
End: Marlborough (-94.56218, 38.97667)
Estimated Travel Time
Distance: 354 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 19m |
| 40 mph (64.37 km/h) | 05h 30m |
| 50 mph (80.47 km/h) | 04h 24m |
| 60 mph (96.56 km/h) | 03h 40m |
| 70 mph (112.65 km/h) | 03h 08m |
| 80 mph (129 km/h) | 02h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $29.26 | $58.53 |
| Mid-grade | $4.25 | $33.00 | $66.01 |
| Premium | $4.65 | $36.12 | $72.23 |
| Diesel | $5.30 | $41.16 | $82.32 |
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.