How far is Cedar Hill, MO from O'Fallon, MO?
The driving distance from Cedar Hill, MO to O'Fallon, MO is about 51.5 miles (82.9 km), with a travel time of about 00h 55m by car.
- The straight-line flight distance is about 31.8 miles (51.1 km).
- For a round trip, plan for roughly 01h 51m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CST.
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 00h 55m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
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 New Jersey
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 Cedar Hill and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Cedar Hill and O'Fallon.
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1
Start on the route
16 m · 8 sec
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2
Turn left onto Cedar Hill Road
116 m · 10 sec · Cedar Hill Road
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3
Turn right
1949 ft · 48 sec
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4
Turn right onto SFC William Brian Woods Jr. Memorial Highway
5.5 mi · 7 min · SFC William Brian Woods Jr. Memorial Highway
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5
Take the exit slight left
542 ft · 16 sec
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6
Turn left
6.3 mi · 11 min
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7
Turn right
8.2 mi · 14 min
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8
Enter the roundabout and take exit 2 toward the route
23 m · 2 sec
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9
Exit the roundabout
618 ft · 13 sec
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10
Enter the roundabout and take exit 2 toward the route
27 m · 2 sec
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11
Exit the roundabout
157 m · 11 sec
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12
Enter the roundabout and take exit 1 toward the route
30 m · 2 sec
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13
Exit the roundabout
2129 ft · 45 sec
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14
Enter the roundabout and take exit 2 toward the route
29 m · 2 sec
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15
Exit the roundabout
4.3 mi · 7 min
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16
Enter the roundabout and take exit 2 toward South Eatherton Road
29 m · 1 sec · South Eatherton Road
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17
Exit the roundabout onto South Eatherton Road
2.4 mi · 5 min · South Eatherton Road
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18
Continue on Olive Street Road
1.5 km · 2 min · Olive Street Road
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19
Take the ramp left toward Chesterfield Airport Road
1.1 km · 1 min · Chesterfield Airport Road
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20
Merge slight left onto Avenue of the Saints
3.1 mi · 4 min · Avenue of the Saints
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21
Take the exit slight right toward MO K: O'Fallon
100 m · 6 sec
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22
Merge slight right onto North Outer Road
1650 ft · 31 sec · North Outer Road
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23
Continue on North Outer Road
946 ft · 18 sec · North Outer Road
-
24
Turn right
3.3 mi · 5 min
-
25
Continue straight
1.5 mi · 3 min
-
26
Continue straight
1.6 mi · 3 min
-
27
Continue on South Main Street
3115 ft · 2 min · South Main Street
-
28
Turn right
8 m · 2 sec
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29
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Cedar Hill and O'Fallon.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Longest stretch
Turn right
8.17 mi · 00h 14m
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.
Sunny leaving Cedar Hill 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 Cedar Hill to O'Fallon?
The road trip is about 51.5 miles (82.9 km) and usually takes 00h 55m 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?
Wildwood is a useful midpoint, sitting about 20.1 miles from Cedar Hill and 31.4 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 31.8 miles (51.1 km), while the road route adds roughly 19.7 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 CST. If you want a more comfortable same-day return, try to leave by 4:38 PM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.87 one way or $13.74 round trip. Estimated CO2 is about 16.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Cedar Hill and Mostly Sunny near O'Fallon.
Stop Ideas Near Wildwood
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Wildwood City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Wildwood.
Kirkwood
Washington
Gateway Transportation Center
Alton
Flight Path Map
This map shows the direct air route between Cedar Hill and O'Fallon. Straight-line distance: 31.75 mi (51.1 km).
#1 Cedar Hill
Cedar Hill is a place in Missouri, United States.
| Population | 0 |
| Coordinates | 38.3533900, -90.6412400 |
| Altitude | 168 |
| 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: 83 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 43m |
| 40 mph (64.37 km/h) | 01h 17m |
| 50 mph (80.47 km/h) | 01h 01m |
| 60 mph (96.56 km/h) | 00h 51m |
| 70 mph (112.65 km/h) | 00h 44m |
| 80 mph (129 km/h) | 00h 38m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.87 | $13.74 |
| Mid-grade | $4.15 | $7.55 | $15.10 |
| Premium | $4.51 | $8.21 | $16.43 |
| Diesel | $6.00 | $10.91 | $21.83 |
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 · Nov 06, 2026