How far is Huntsville, MO from O'Fallon, MO?
The driving distance from Huntsville, MO to O'Fallon, MO is about 133.6 miles (215 km), with a travel time of about 02h 06m by car.
- The straight-line flight distance is about 108.1 miles (173.9 km).
- For a round trip, plan for roughly 04h 13m 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 02h 06m.
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.
Human settlement in Callaway County, Missouri, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Slight Chance Rain Showers then Mostly Sunny
Driving Route Map
The map below follows the saved road route between Huntsville and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Huntsville and O'Fallon.
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1
Start on East Depot Street
4 m · 6 sec · East Depot Street
-
2
Turn left onto South Main Street
1.4 mi · 3 min · South Main Street
-
3
Turn left
1633 ft · 60 sec
-
4
Turn straight
6.1 mi · 9 min
-
5
Take the ramp right toward US 63 South: Columbia
1844 ft · 45 sec
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6
Merge slight left
35 mi · 38 min
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7
Take the exit slight right toward MO PP, I 70, US 40: Kansas City, Saint Louis
2467 ft · 56 sec
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8
Turn straight
2352 ft · 55 sec
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9
Take the exit left toward I 70 East, US 40 East: Saint Louis
1271 ft · 31 sec
-
10
Continue on Dwight D. Eisenhower Highway
88.2 mi · 1 hr 44 min · Dwight D. Eisenhower Highway
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11
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
-
12
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
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13
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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14
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
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15
Continue on South Main Street
3115 ft · 2 min · South Main Street
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16
Turn right
8 m · 2 sec
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17
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Huntsville 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 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 Huntsville and Slight Chance Rain Showers then 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 Huntsville to O'Fallon?
The road trip is about 133.6 miles (215 km) and usually takes 02h 06m 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?
Kingdom City is a useful midpoint, sitting about 66.7 miles from Huntsville and 66.9 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 108.1 miles (173.9 km), while the road route adds roughly 25.5 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 2:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $17.80 one way or $35.60 round trip. Estimated CO2 is about 41.9 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Huntsville and Slight Chance Rain Showers then Mostly Sunny near O'Fallon.
Stop Ideas Near Kingdom City
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 Kingdom City.
Jefferson City
Hermann
Washington
Sedalia
Flight Path Map
This map shows the direct air route between Huntsville and O'Fallon. Straight-line distance: 108.06 mi (173.91 km).
#1 Huntsville
City in Missouri
| Population | 1,475 |
| Coordinates | 39.4405900, -92.5451800 |
| Altitude | 245 |
| 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: 215 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 27m |
| 40 mph (64.37 km/h) | 03h 20m |
| 50 mph (80.47 km/h) | 02h 40m |
| 60 mph (96.56 km/h) | 02h 13m |
| 70 mph (112.65 km/h) | 01h 54m |
| 80 mph (129 km/h) | 01h 40m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $17.80 | $35.60 |
| Mid-grade | $4.25 | $20.07 | $40.15 |
| Premium | $4.65 | $21.97 | $43.93 |
| Diesel | $5.30 | $25.03 | $50.07 |
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 · May 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.