How far is High Ridge, MO from O'Fallon, MO?
The driving distance from High Ridge, MO to O'Fallon, MO is about 41.6 miles (66.9 km), with a travel time of about 00h 46m by car.
- The straight-line flight distance is about 25.8 miles (41.6 km).
- For a round trip, plan for roughly 01h 32m 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 00h 46m.
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.
A city in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Isolated Showers And Thunderstorms then Scattered Showers And Thunderstorms
Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between High Ridge and O'Fallon.
Turn-by-Turn Driving Directions
Step-by-step road directions between High Ridge and O'Fallon.
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1
Start on the route
36 m · 11 sec
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2
At the end of the road, turn right onto High Ridge Boulevard
1262 ft · 45 sec · High Ridge Boulevard
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3
Turn left
835 ft · 22 sec
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4
Turn left
3.8 mi · 5 min
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5
Take the exit slight left toward New Sugar Creek Road
148 m · 13 sec
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6
Turn slight left onto New Sugar Creek Road
1.1 mi · 2 min · New Sugar Creek Road
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7
Continue on Hawkins Road
1.6 mi · 4 min · Hawkins Road
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8
Turn left
8.8 mi · 14 min
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9
Take the exit slight left toward I 64 West, US 40 West, US 61 North: Wentzville
41 m · 7 sec
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10
Turn left onto I 64 West, US 40 West, US 61 North: Wentzville
1812 ft · 44 sec
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11
Merge slight left onto Avenue of the Saints
11.7 mi · 15 min · Avenue of the Saints
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12
Take the exit slight right toward MO K: O'Fallon
100 m · 6 sec
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13
Merge slight right onto North Outer Road
1650 ft · 31 sec · North Outer Road
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14
Continue on North Outer Road
946 ft · 18 sec · North Outer Road
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15
Turn right
3.3 mi · 5 min
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16
Continue straight
1.5 mi · 3 min
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17
Continue straight
1.6 mi · 3 min
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18
Continue on South Main Street
3115 ft · 2 min · South Main Street
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19
Turn right
8 m · 2 sec
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20
Arrive at your destination
0 m · 1 sec
Car Route Details
A richer read on the saved driving route between High Ridge and O'Fallon.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Avenue of the Saints
Merge slight left onto Avenue of the Saints
11.7 mi · 00h 15m
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.
Isolated Showers And Thunderstorms then Scattered Showers And Thunderstorms leaving High Ridge and Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms near O'Fallon.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from High Ridge to O'Fallon?
The road trip is about 41.6 miles (66.9 km) and usually takes 00h 46m 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?
Chesterfield is a useful midpoint, sitting about 17.6 miles from High Ridge and 23.9 miles from O'Fallon.
How much longer is the road route than the straight-line distance?
The direct path is about 25.8 miles (41.6 km), while the road route adds roughly 15.8 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 4:58 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.54 one way or $11.09 round trip. Estimated CO2 is about 13.1 kg one way.
What should you check before leaving?
Before you leave, expect Isolated Showers And Thunderstorms then Scattered Showers And Thunderstorms around High Ridge and Isolated Showers And Thunderstorms then Chance Showers And Thunderstorms near O'Fallon.
Stop Ideas Near Chesterfield
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Wildwood City Hall
Ferguson Finance Director
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Chesterfield.
Kirkwood
Gateway Transportation Center
Washington
Alton
Flight Path Map
This map shows the direct air route between High Ridge and O'Fallon. Straight-line distance: 25.85 mi (41.6 km).
#1 High Ridge
Census designated place
| Population | 4,305 |
| Coordinates | 38.4589400, -90.5365100 |
| Altitude | 281 |
| 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: 67 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 23m |
| 40 mph (64.37 km/h) | 01h 02m |
| 50 mph (80.47 km/h) | 00h 49m |
| 60 mph (96.56 km/h) | 00h 41m |
| 70 mph (112.65 km/h) | 00h 35m |
| 80 mph (129 km/h) | 00h 31m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $5.54 | $11.09 |
| Mid-grade | $4.25 | $6.25 | $12.50 |
| Premium | $4.65 | $6.84 | $13.68 |
| Diesel | $5.30 | $7.80 | $15.59 |
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.