How far is Florissant, MO from Mehlville, MO?
The driving distance from Florissant, MO to Mehlville, MO is about 29.1 miles (46.8 km), with a travel time of about 00h 39m by car.
- The straight-line flight distance is about 19.4 miles (31.2 km).
- For a round trip, plan for roughly 01h 18m 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 39m.
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.
Village in west St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Slight Chance Rain Showers
Driving Route Map
The map below follows the saved road route between Florissant and Mehlville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Florissant and Mehlville.
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1
Start on North New Florissant Road
26 m · 6 sec · North New Florissant Road
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2
Turn right onto Washington Street
1 mi · 2 min · Washington Street
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3
Turn left onto Lindbergh Boulevard
1.7 mi · 3 min · Lindbergh Boulevard
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4
Take the ramp slight right
1912 ft · 47 sec
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5
Merge slight left onto Rosemary Straub Davison Highway
24.3 mi · 30 min · Rosemary Straub Davison Highway
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6
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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7
Keep slight left to continue on I 55 North, US 61, US 67: Saint Louis
557 ft · 8 sec
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8
Continue on I 55 North, US 61, US 67: Saint Louis
797 ft · 11 sec
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9
Keep slight left to continue on US 61, US 67
1885 ft · 42 sec
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10
Turn left onto Lemay Ferry Road
1.2 km · 2 min · Lemay Ferry Road
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11
Arrive at your destination
0 m · 1 sec · Lemay Ferry Road
Car Route Details
A richer read on the saved driving route between Florissant and Mehlville.
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.
Rosemary Straub Davison Highway
Merge slight left onto Rosemary Straub Davison Highway
24.3 mi · 00h 30m
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.
Slight Chance Rain Showers leaving Florissant and Slight Chance Rain Showers near Mehlville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Florissant to Mehlville?
The road trip is about 29.1 miles (46.8 km) and usually takes 00h 39m 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?
Westwood is a useful midpoint, sitting about 14.5 miles from Florissant and 14.5 miles from Mehlville.
How much longer is the road route than the straight-line distance?
The direct path is about 19.4 miles (31.2 km), while the road route adds roughly 9.7 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 7:12 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.85 one way or $7.69 round trip. Estimated CO2 is about 9.1 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Florissant and Slight Chance Rain Showers near Mehlville.
Stop Ideas Near Westwood
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 Westwood.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Florissant and Mehlville. Straight-line distance: 19.41 mi (31.23 km).
#1 Florissant
The most populous city in St.
| Population | 50,795 |
| Coordinates | 38.7892200, -90.3226100 |
| Altitude | 175 |
| Country | United States |
#2 Mehlville
Census designated place
| Population | 28,380 |
| Coordinates | 38.5083900, -90.3228900 |
| Altitude | 184 |
| Country | United States |
End: Mehlville (-90.32289, 38.50839)
Estimated Travel Time
Distance: 47 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 58m |
| 40 mph (64.37 km/h) | 00h 43m |
| 50 mph (80.47 km/h) | 00h 34m |
| 60 mph (96.56 km/h) | 00h 29m |
| 70 mph (112.65 km/h) | 00h 24m |
| 80 mph (129 km/h) | 00h 21m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.85 | $7.69 |
| Mid-grade | $4.25 | $4.34 | $8.68 |
| Premium | $4.65 | $4.75 | $9.49 |
| Diesel | $5.30 | $5.41 | $10.82 |
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 29, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.