How far is O'Fallon, MO from Cassville, MO?
The driving distance from O'Fallon, MO to Cassville, MO is about 269.9 miles (434.3 km), with a travel time of about 05h 28m by car.
- The straight-line flight distance is about 227.4 miles (365.9 km).
- For a round trip, plan for roughly 10h 57m 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 05h 28m.
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 Pulaski County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Partly Sunny
Showers And Thunderstorms Likely
Driving Route Map
The map below follows the saved road route between O'Fallon and Cassville.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Cassville.
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1
Start on the route
8 m · 7 sec
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2
Turn left onto South Main Street
2865 ft · 1 min · South Main Street
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3
Continue straight
3.1 mi · 6 min
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4
Continue straight
3.4 mi · 5 min
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5
Take the ramp slight right toward I 64 East, US 40 East, US 61 South
1523 ft · 22 sec
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6
Merge slight left onto Avenue of the Saints
3.7 mi · 5 min · Avenue of the Saints
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7
Take the exit slight right toward Chesterfield Airport Road
2700 ft · 58 sec
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8
Continue on Chesterfield Airport Road
110 m · 7 sec · Chesterfield Airport Road
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9
Turn right onto Olive Street Road
64 m · 5 sec
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10
Turn right onto Olive Street Road
1.5 km · 2 min · Olive Street Road
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11
Continue on North Eatherton Road
2.4 mi · 5 min · North Eatherton Road
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12
Enter the roundabout and take exit 2 toward the route
21 m · 1 sec
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13
Exit the roundabout
4.3 mi · 7 min
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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
2098 ft · 45 sec
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16
Enter the roundabout and take exit 2 toward MO 100 West: Gray Summit
23 m · 2 sec
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17
Exit the roundabout onto MO 100 West: Gray Summit
1202 ft · 33 sec
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18
Merge slight left
13.3 mi · 19 min
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19
Take the exit slight right toward I 44 West, US 50 West: St. Clair
1157 ft · 14 sec
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20
Merge slight left
182.8 mi · 3 hr 18 min
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21
Take the exit slight right toward MO MM, MO B
1040 ft · 30 sec
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22
Turn left
3.9 mi · 6 min
-
23
Continue straight
96 m · 11 sec
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24
Turn straight
9 mi · 14 min
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25
Continue on Southwest Elm Street
1.2 mi · 2 min · Southwest Elm Street
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26
Continue straight
5.3 mi · 7 min
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27
Continue straight
6 mi · 9 min
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28
Turn left onto South Elliott Avenue
1.5 mi · 3 min · South Elliott Avenue
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29
Continue on State Highway 39
12.1 mi · 17 min · State Highway 39
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30
Turn right onto State Highway 248
14.1 mi · 20 min · State Highway 248
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31
At the end of the road, turn right
922 ft · 24 sec
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32
Turn left
16 m · 5 sec
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33
Turn right
15 m · 4 sec
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34
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between O'Fallon and Cassville.
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 44 West
Merge slight left
183 mi · 03h 18m
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.
Partly Sunny leaving O'Fallon and Showers And Thunderstorms Likely near Cassville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Cassville?
The road trip is about 269.9 miles (434.3 km) and usually takes 05h 28m 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?
Waynesville is a useful midpoint, sitting about 134.8 miles from O'Fallon and 135 miles from Cassville.
How much longer is the road route than the straight-line distance?
The direct path is about 227.4 miles (365.9 km), while the road route adds roughly 42.5 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 6:00 AM to 8:00 AM CDT. If you want a more comfortable same-day return, try to leave by 6:02 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $35.90 one way or $71.80 round trip. Estimated CO2 is about 84.6 kg one way.
What should you check before leaving?
Before you leave, expect Partly Sunny around O'Fallon and Showers And Thunderstorms Likely near Cassville.
Stop Ideas Near Waynesville
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 Waynesville.
Jefferson City
Hermann
Flight Path Map
This map shows the direct air route between O'Fallon and Cassville. Straight-line distance: 227.37 mi (365.91 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Cassville
City in Barry County, Missouri
| Population | 3,220 |
| Coordinates | 36.6770100, -93.8688100 |
| Altitude | 399 |
| Country | United States |
End: Cassville (-93.86881, 36.67701)
Estimated Travel Time
Distance: 434 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 08h 59m |
| 40 mph (64.37 km/h) | 06h 44m |
| 50 mph (80.47 km/h) | 05h 23m |
| 60 mph (96.56 km/h) | 04h 29m |
| 70 mph (112.65 km/h) | 03h 51m |
| 80 mph (129 km/h) | 03h 22m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $35.90 | $71.80 |
| Mid-grade | $4.25 | $40.49 | $80.98 |
| Premium | $4.65 | $44.31 | $88.61 |
| Diesel | $5.30 | $50.49 | $100.99 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.