How far is O'Fallon, MO from Crystal City, MO?
The driving distance from O'Fallon, MO to Crystal City, MO is about 57.1 miles (91.9 km), with a travel time of about 01h 13m by car.
- The straight-line flight distance is about 44.2 miles (71.2 km).
- For a round trip, plan for roughly 02h 27m 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 13m.
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 Saint Louis County, Missouri, United States
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 Crystal City.
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon and Crystal City.
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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 Drennen Parkway
1.4 km · 1 min · Drennen Parkway
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4
Take the ramp slight left toward I 70 East: Saint Louis
133 m · 6 sec
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5
Merge slight left
13.5 mi · 17 min
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6
Take the exit slight right toward I 270: Chicago, Memphis
872 ft · 12 sec
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7
Keep slight right to continue on I 270 South: Memphis
2339 ft · 33 sec
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8
Continue on I 270 South: Memphis
723 ft · 10 sec
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9
Merge slight left
19 mi · 24 min
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10
Take the exit slight right toward I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
1911 ft · 27 sec
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11
Keep slight right to continue on I 55 South: Memphis
2031 ft · 44 sec
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12
Merge slight left onto Rosa Parks Highway
1.5 mi · 2 min · Rosa Parks Highway
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13
Continue on Officer Thomas G. Smith, Jr. Memorial Highway
1.8 mi · 2 min · Officer Thomas G. Smith, Jr. Memorial Highway
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14
Continue on Police Officer Steven Jarvis Memorial Highway
14.3 mi · 15 min · Police Officer Steven Jarvis Memorial Highway
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15
Take the exit slight right toward Herculaneum
1006 ft · 25 sec
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16
Turn right onto McNutt Street
141 m · 13 sec · McNutt Street
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17
Enter the roundabout and take exit 4 toward McNutt Street
550 ft · 10 sec · McNutt Street
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18
Exit the roundabout onto McNutt Street
3221 ft · 1 min · McNutt Street
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19
Turn right onto Commercial Boulevard
3160 ft · 1 min · Commercial Boulevard
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20
Continue on North Truman Boulevard
1.5 mi · 3 min · North Truman Boulevard
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21
Turn left onto 8th Street
1159 ft · 25 sec · 8th Street
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22
Turn right onto Jefferson Avenue
1954 ft · 59 sec · Jefferson Avenue
-
23
Turn left onto 3rd Avenue
111 m · 18 sec · 3rd Avenue
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24
Turn right onto North Taylor Avenue
133 m · 19 sec · North Taylor Avenue
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25
Arrive at your destination
0 m · 1 sec · North Taylor Avenue
Car Route Details
A richer read on the saved driving route between O'Fallon and Crystal City.
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 mi · 00h 24m
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 Crystal City.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from O'Fallon to Crystal City?
The road trip is about 57.1 miles (91.9 km) and usually takes 01h 13m 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?
Sunset Hills is a useful midpoint, sitting about 28.6 miles from O'Fallon and 28.5 miles from Crystal City.
How much longer is the road route than the straight-line distance?
The direct path is about 44.2 miles (71.2 km), while the road route adds roughly 12.9 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 4:02 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.62 one way or $15.23 round trip. Estimated CO2 is about 18 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around O'Fallon and Sunny near Crystal City.
Stop Ideas Near Sunset Hills
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 Sunset Hills.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between O'Fallon and Crystal City. Straight-line distance: 44.27 mi (71.24 km).
#1 O'Fallon
The most populous city in St.
| Population | 89,769 |
| Coordinates | 38.8106100, -90.6998500 |
| Altitude | 165 |
| Country | United States |
#2 Crystal City
City in Jefferson County, Missouri, United States
| Population | 4,700 |
| Coordinates | 38.2211700, -90.3790100 |
| Altitude | 135 |
| Country | United States |
End: Crystal City (-90.37901, 38.22117)
Estimated Travel Time
Distance: 92 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 54m |
| 40 mph (64.37 km/h) | 01h 25m |
| 50 mph (80.47 km/h) | 01h 08m |
| 60 mph (96.56 km/h) | 00h 57m |
| 70 mph (112.65 km/h) | 00h 48m |
| 80 mph (129 km/h) | 00h 42m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.62 | $15.23 |
| Mid-grade | $4.25 | $8.59 | $17.18 |
| Premium | $4.65 | $9.40 | $18.80 |
| Diesel | $5.30 | $10.71 | $21.43 |
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 12, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.