How far is Imperial, MO from Florissant, MO?
The driving distance from Imperial, MO to Florissant, MO is about 39.3 miles (63.2 km), with a travel time of about 00h 41m by car.
- The straight-line flight distance is about 29.1 miles (46.9 km).
- For a round trip, plan for roughly 01h 23m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
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 41m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
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.
Mostly Clear
Driving Route Map
The map below follows the saved road route between Imperial and Florissant.
Turn-by-Turn Driving Directions
Step-by-step road directions between Imperial and Florissant.
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1
Start on White Street
126 m · 24 sec · White Street
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2
Turn left onto Old State Road
85 m · 14 sec · Old State Road
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3
Turn right onto Imperial Main Street
114 m · 7 sec · Imperial Main Street
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4
Take the ramp slight right toward I 55 North: Saint Louis
1304 ft · 32 sec
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5
Merge slight left
8 mi · 9 min
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6
Continue on Rosa Parks Highway
1.3 mi · 2 min · Rosa Parks Highway
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7
Take the exit slight right toward I 270 West, I 255 East: Kansas City, Chicago
1279 ft · 27 sec
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8
Keep slight left to continue on I 270 West: Kansas City
118 m · 8 sec
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9
Continue on I 270 West
1.2 km · 1 min
-
10
Merge slight left
24.4 mi · 31 min
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11
Take the exit slight right toward US 67
1565 ft · 45 sec
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12
Turn left onto North Lindbergh Boulevard
1.8 mi · 3 min · North Lindbergh Boulevard
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13
Turn right onto West Washington Street
1 mi · 2 min · West Washington Street
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14
Turn left onto North New Florissant Road
26 m · 1 sec · North New Florissant Road
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15
Arrive at your destination
0 m · 1 sec · North New Florissant Road
Car Route Details
A richer read on the saved driving route between Imperial and Florissant.
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 West
Merge slight left
24.4 mi · 00h 31m
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.
Sunny leaving Imperial and Mostly Clear near Florissant.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Imperial to Florissant?
The road trip is about 39.3 miles (63.2 km) and usually takes 00h 41m 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?
Des Peres is a useful midpoint, sitting about 19.2 miles from Imperial and 20.1 miles from Florissant.
How much longer is the road route than the straight-line distance?
The direct path is about 29.1 miles (46.9 km), while the road route adds roughly 10.2 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 Sunny around Imperial and Mostly Clear near Florissant.
Stop Ideas Near Des Peres
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 Des Peres.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Imperial and Florissant. Straight-line distance: 29.14 mi (46.89 km).
#1 Imperial
Imperial is a place in Missouri, United States.
| Population | 0 |
| Coordinates | 38.3697800, -90.3784500 |
| Altitude | 135 |
| Country | United States |
#2 Florissant
The most populous city in St.
| Population | 50,795 |
| Coordinates | 38.7892200, -90.3226100 |
| Altitude | 175 |
| Country | United States |
End: North New Florissant Road (-90.32261, 38.78922)
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 · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.