How far is O'Fallon, MO from Osage Beach, MO?
The driving distance from O'Fallon, MO to Osage Beach, MO is about 147.9 miles (238 km), with a travel time of about 02h 50m by car.
- The straight-line flight distance is about 115.6 miles (186.1 km).
- For a round trip, plan for roughly 05h 41m 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 50m.
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 and county seat of Callaway County, Missouri
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 Osage Beach.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Osage Beach.
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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
69.4 mi · 1 hr 20 min
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8
Take the exit slight right toward US 54: Auxvasse, Mexico, Fulton
1196 ft · 28 sec
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9
Turn left
76.8 mi · 1 hr 26 min
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10
Take the exit slight right toward US 54 Business
819 ft · 23 sec
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11
Turn right onto Jeffries Road
1082 ft · 25 sec · Jeffries Road
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12
At the end of the road, turn right onto Osage Beach Parkway
1043 ft · 26 sec · Osage Beach Parkway
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13
Turn left onto Winn Road
58 m · 9 sec · Winn Road
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14
Turn right
39 m · 10 sec
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15
Turn right
25 m · 6 sec
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16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between O'Fallon and Osage Beach.
Straightforward drive
The saved road route has a manageable number of maneuvers and should be easy to follow with normal attention to signs.
Longest stretch
Turn left
76.8 mi · 01h 26m
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 O'Fallon and Sunny near Osage Beach.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Osage Beach?
The road trip is about 147.9 miles (238 km) and usually takes 02h 50m 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?
Fulton is a useful midpoint, sitting about 73.9 miles from O'Fallon and 74 miles from Osage Beach.
How much longer is the road route than the straight-line distance?
The direct path is about 115.6 miles (186.1 km), while the road route adds roughly 32.3 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 12:48 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $19.68 one way or $39.37 round trip. Estimated CO2 is about 46.4 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around O'Fallon and Sunny near Osage Beach.
Stop Ideas Near Fulton
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 Fulton.
Jefferson City
Hermann
Washington
Sedalia
Flight Path Map
This map shows the direct air route between O'Fallon and Osage Beach. Straight-line distance: 115.65 mi (186.12 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Osage Beach
City in Camden and Miller counties in the U.
| Population | 4,677 |
| Coordinates | 38.1295600, -92.6527700 |
| Altitude | 262 |
| Country | United States |
End: Osage Beach (-92.65277, 38.12956)
Estimated Travel Time
Distance: 238 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 55m |
| 40 mph (64.37 km/h) | 03h 41m |
| 50 mph (80.47 km/h) | 02h 57m |
| 60 mph (96.56 km/h) | 02h 27m |
| 70 mph (112.65 km/h) | 02h 06m |
| 80 mph (129 km/h) | 01h 50m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $19.68 | $39.37 |
| Mid-grade | $4.25 | $22.20 | $44.40 |
| Premium | $4.65 | $24.29 | $48.59 |
| Diesel | $5.30 | $27.69 | $55.37 |
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 25, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.