How far is O'Fallon, MO from Oakville, MO?
Fastest route
The fastest route from O'Fallon, Missouri, USA to Oakville, Missouri 63129, USA is approximately 42 minutes and covers a distance of 39.2 miles. The route includes highways I-70 E, I-270 S, and MO-231 S/Telegraph Rd.
Directions
- Start by heading south on S Main St toward W Elm St in O'Fallon.
- Take the exit toward I-70 E/St Louis and continue onto Drennen Pkwy.
- Keep left at the fork and merge onto I-70 E.
- Continue on I-70 E and then merge onto I-270 S.
- Keep left and take exit 2 to merge onto MO-231 S/Telegraph Rd in Mehlville.
- Follow MO-231 S/Telegraph Rd until you reach Oakville.
- Merge onto Cliff Cave Rd and then turn right after Valvoline Instant Oil Change to reach your destination in Oakville.
Tips & Suggestions
- 🚗 It's recommended to use I-70 E and I-270 S for the fastest route.
- ⚠️ Keep an eye on traffic conditions, as the suggested route may change based on current traffic.
- 📍 Pay attention to the road signs to ensure you're following the correct exits and merges.
- ⛽ Plan ahead and make sure your vehicle has enough fuel for the journey.
- 🚧 Be aware of any construction or road closures that may affect your route.
- 🗺️ Consider using a navigation app or GPS device to help you navigate the route.
- 🕑 Allow for extra travel time if you expect heavy traffic or other delays.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 42m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
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 Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Sunny
Driving Route Map
The map below follows the saved road route between O'Fallon and Oakville.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Oakville.
-
1
Start on the route
8 m · 7 sec
-
2
Turn left onto South Main Street
3116 ft · 2 min · South Main Street
-
3
Turn left onto Drennen Parkway
1.4 km · 1 min · Drennen Parkway
-
4
Take the ramp slight left toward I 70 East: Saint Louis
133 m · 6 sec
-
5
Merge slight left
13.5 mi · 17 min
-
6
Take the exit slight right toward I 270: Chicago, Memphis
872 ft · 12 sec
-
7
Keep slight right to continue on I 270 South: Memphis
2339 ft · 33 sec
-
8
Continue on I 270 South: Memphis
723 ft · 10 sec
-
9
Merge slight left
19.6 mi · 24 min
-
10
Continue straight
1.8 mi · 2 min
-
11
Take the exit slight right toward MO 231: Telegraph Road
1700 ft · 36 sec
-
12
Turn right onto Telegraph Road
1.6 mi · 3 min · Telegraph Road
-
13
Turn left onto Cliff Cave Road
89 m · 15 sec · Cliff Cave Road
-
14
Turn right
40 m · 11 sec
-
15
Turn right
37 m · 9 sec
-
16
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between O'Fallon and Oakville.
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 270 South
Merge slight left
19.6 mi · 00h 24m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Mostly Sunny leaving O'Fallon and Sunny near Oakville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Oakville?
The road trip is about 39.2 miles (63.1 km) and usually takes 00h 42m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Maryland Heights is a useful midpoint, sitting about 19.6 miles from O'Fallon and 19.6 miles from Oakville.
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 7.4 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:06 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.20 one way or $10.41 round trip. Estimated CO2 is about 12.3 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around O'Fallon and Sunny near Oakville.
Stop Ideas Near Maryland Heights
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 Maryland Heights.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between O'Fallon and Oakville. Straight-line distance: 31.76 mi (51.11 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Oakville
City in Halton Region, Ontario
| Population | 36,143 |
| Coordinates | 38.4700500, -90.3045600 |
| Altitude | 183 |
| Country | United States |
End: Cliff Cave Road (-90.304531, 38.470247)
Estimated Travel Time
Distance: 63 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 18m |
| 40 mph (64.37 km/h) | 00h 58m |
| 50 mph (80.47 km/h) | 00h 47m |
| 60 mph (96.56 km/h) | 00h 39m |
| 70 mph (112.65 km/h) | 00h 33m |
| 80 mph (129 km/h) | 00h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $5.20 | $10.41 |
| Mid-grade | $4.25 | $5.87 | $11.74 |
| Premium | $4.65 | $6.42 | $12.85 |
| Diesel | $5.30 | $7.32 | $14.64 |
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 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.