How far is O'Fallon, MO from Harrisonville, MO?
The driving distance from O'Fallon, MO to Harrisonville, MO is about 224.1 miles (360.6 km), with a travel time of about 04h 30m by car.
- The straight-line flight distance is about 197 miles (317 km).
- For a round trip, plan for roughly 09h 01m 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 04h 30m.
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 Cooper County, Missouri, USA
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms Likely
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between O'Fallon and Harrisonville.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Harrisonville.
-
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 I 70 East
10 m · 6 sec
-
4
Turn sharp left onto South Main Street
87 m · 11 sec · South Main Street
-
5
Turn left onto West Terra Lane
576 ft · 12 sec · West Terra Lane
-
6
Take the ramp straight toward I 70 West
146 m · 7 sec
-
7
Merge slight left
189.2 mi · 3 hr 33 min
-
8
Take the exit slight right toward MO F, MO H: Oak Grove, Levasy
1170 ft · 22 sec
-
9
Keep slight left to continue on MO F, MO H: Oak Grove, Levasy
51 m · 4 sec
-
10
Turn straight onto North Broadway Street
2.8 mi · 6 min · North Broadway Street
-
11
Continue on South Outer Belt Road
7.3 mi · 10 min · South Outer Belt Road
-
12
Turn right
1.9 mi · 2 min
-
13
Take the exit slight right toward MO 150 West: Lone Jack
1222 ft · 33 sec
-
14
Turn left onto South Bynum Road
3.3 mi · 6 min · South Bynum Road
-
15
Turn right
4.4 mi · 8 min
-
16
Enter the roundabout and take exit 2 toward the route
27 m · 2 sec
-
17
Exit the roundabout
2533 ft · 54 sec
-
18
Turn left
13.2 mi · 22 min
-
19
Turn right onto South Independence Street
23 m · 2 sec · South Independence Street
-
20
Arrive at your destination
0 m · 1 sec · South Independence Street
Car Route Details
A richer read on the saved driving route between O'Fallon and Harrisonville.
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 70 West
Merge slight left
189 mi · 03h 33m
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.
Showers And Thunderstorms Likely leaving O'Fallon and Chance Showers And Thunderstorms near Harrisonville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Harrisonville?
The road trip is about 224.1 miles (360.6 km) and usually takes 04h 30m 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?
Boonville is a useful midpoint, sitting about 111.8 miles from O'Fallon and 112.2 miles from Harrisonville.
How much longer is the road route than the straight-line distance?
The direct path is about 197 miles (317 km), while the road route adds roughly 27.1 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 7:58 AM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $29.83 one way or $59.66 round trip. Estimated CO2 is about 70.3 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms Likely around O'Fallon and Chance Showers And Thunderstorms near Harrisonville.
Stop Ideas Near Boonville
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 Boonville.
Sedalia
Jefferson City
Warrensburg
Hermann
Flight Path Map
This map shows the direct air route between O'Fallon and Harrisonville. Straight-line distance: 196.96 mi (316.98 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Harrisonville
City in Cass County, Missouri, United States
| Population | 10,086 |
| Coordinates | 38.6533400, -94.3488400 |
| Altitude | 292 |
| Country | United States |
End: Harrisonville (-94.34884, 38.65334)
Estimated Travel Time
Distance: 361 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 07h 27m |
| 40 mph (64.37 km/h) | 05h 36m |
| 50 mph (80.47 km/h) | 04h 28m |
| 60 mph (96.56 km/h) | 03h 44m |
| 70 mph (112.65 km/h) | 03h 12m |
| 80 mph (129 km/h) | 02h 47m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $29.83 | $59.66 |
| Mid-grade | $4.25 | $33.64 | $67.28 |
| Premium | $4.65 | $36.81 | $73.63 |
| Diesel | $5.30 | $41.95 | $83.91 |
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 31, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.