How far is Belle, MO from O'Fallon, MO?
The driving distance from Belle, MO to O'Fallon, MO is about 84.4 miles (135.9 km), with a travel time of about 01h 45m by car.
- The straight-line flight distance is about 66 miles (106.2 km).
- For a round trip, plan for roughly 03h 30m 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 01h 45m.
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 Franklin County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Belle and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between Belle and O'Fallon.
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1
Start on the route
42 m · 8 sec
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2
Turn left onto South Alvarado Avenue
104 m · 11 sec · South Alvarado Avenue
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3
Turn left onto 5th Street
71 m · 11 sec · 5th Street
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4
Turn left
5.7 mi · 9 min
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5
Keep slight left
13.7 mi · 20 min
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6
Turn right
24.9 mi · 30 min
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7
Turn left
11.1 mi · 17 min
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8
Turn right
1.2 km · 2 min
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9
Continue straight
3.5 mi · 6 min
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10
At the end of the road, turn left
3.1 mi · 4 min
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11
Continue straight
4.9 mi · 7 min
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12
Turn left
7.2 mi · 11 min
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13
Take the ramp right toward I 70 East, US 40 East: Saint Louis
959 ft · 13 sec
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14
Merge slight left onto Dwight D Eisenhower Highway
7.8 mi · 9 min · Dwight D Eisenhower Highway
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15
Take the exit slight right toward MO K: O'Fallon
1765 ft · 43 sec
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16
Turn straight onto Drennen Parkway
46 m · 3 sec · Drennen Parkway
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17
Keep slight right to continue on Drennen Parkway
51 m · 6 sec · Drennen Parkway
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18
Turn slight left onto MO K: O'Fallon
19 m · 3 sec
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19
Continue on South Main Street
3115 ft · 2 min · South Main Street
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20
Turn right
8 m · 2 sec
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21
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between Belle and O'Fallon.
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 right
24.9 mi · 00h 30m
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.
Mostly Sunny leaving Belle 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 Belle to O'Fallon?
The road trip is about 84.4 miles (135.9 km) and usually takes 01h 45m 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?
Union is a useful midpoint, sitting about 41.9 miles from Belle and 42.5 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 66 miles (106.2 km), while the road route adds roughly 18.4 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 3:00 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $11.24 one way or $22.48 round trip. Estimated CO2 is about 26.5 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Belle and Mostly Sunny near O'Fallon.
Stop Ideas Near Union
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 Union.
Washington
Hermann
Kirkwood
Gateway Transportation Center
Flight Path Map
This map shows the direct air route between Belle and O'Fallon. Straight-line distance: 66 mi (106.21 km).
#1 Belle
City in Missouri, United States
| Population | 1,489 |
| Coordinates | 38.2858800, -91.7204400 |
| Altitude | 313 |
| 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: 136 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 02h 48m |
| 40 mph (64.37 km/h) | 02h 06m |
| 50 mph (80.47 km/h) | 01h 41m |
| 60 mph (96.56 km/h) | 01h 24m |
| 70 mph (112.65 km/h) | 01h 12m |
| 80 mph (129 km/h) | 01h 03m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $11.24 | $22.48 |
| Mid-grade | $4.25 | $12.67 | $25.35 |
| Premium | $4.65 | $13.87 | $27.74 |
| Diesel | $5.30 | $15.81 | $31.61 |
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 23, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.