How far is Saint Robert, MO from Florissant, MO?
The driving distance from Saint Robert, MO to Florissant, MO is about 140.2 miles (225.6 km), with a travel time of about 02h 07m by car.
- The straight-line flight distance is about 120.5 miles (194 km).
- For a round trip, plan for roughly 04h 14m 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 02h 07m.
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.
Human settlement in Franklin County, Missouri, United States of America
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Saint Robert and Florissant.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Robert and Florissant.
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1
Start on the route
1.2 km · 1 min
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2
Turn left onto I 44 East: Rolla
652 ft · 16 sec
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3
Merge slight left
115.9 mi · 2 hr 7 min
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4
Take the exit slight right toward I 270: Chicago, Memphis
871 ft · 19 sec
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5
Keep slight left to continue on I 270 North: Chicago
551 ft · 12 sec
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6
Continue on I 270 North: Chicago
2638 ft · 53 sec
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7
Merge slight left
18.8 mi · 24 min
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8
Take the exit slight right toward US 67
1565 ft · 45 sec
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9
Turn left onto North Lindbergh Boulevard
1.8 mi · 3 min · North Lindbergh Boulevard
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10
Turn right onto West Washington Street
1 mi · 2 min · West Washington Street
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11
Turn left onto North New Florissant Road
26 m · 1 sec · North New Florissant Road
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12
Arrive at your destination
0 m · 1 sec · North New Florissant Road
Car Route Details
A richer read on the saved driving route between Saint Robert 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 44 East
Merge slight left
116 mi · 02h 07m
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.
Showers And Thunderstorms leaving Saint Robert and Chance Showers And Thunderstorms near Florissant.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Robert to Florissant?
The road trip is about 140.2 miles (225.6 km) and usually takes 02h 07m 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?
Oak Grove Village is a useful midpoint, sitting about 69.7 miles from Saint Robert and 70.5 miles from Florissant.
How much longer is the road route than the straight-line distance?
The direct path is about 120.5 miles (194 km), while the road route adds roughly 19.7 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 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 2:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $18.67 one way or $37.33 round trip. Estimated CO2 is about 44 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Saint Robert and Chance Showers And Thunderstorms near Florissant.
Stop Ideas Near Oak Grove Village
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 Oak Grove Village.
Washington
Hermann
Kirkwood
Gateway Transportation Center
Flight Path Map
This map shows the direct air route between Saint Robert and Florissant. Straight-line distance: 120.51 mi (193.95 km).
#1 Saint Robert
City in Pulaski County, Missouri, United States
| Population | 6,358 |
| Coordinates | 37.8281000, -92.1776700 |
| Altitude | 317 |
| 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: 226 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 04h 40m |
| 40 mph (64.37 km/h) | 03h 30m |
| 50 mph (80.47 km/h) | 02h 48m |
| 60 mph (96.56 km/h) | 02h 20m |
| 70 mph (112.65 km/h) | 02h 00m |
| 80 mph (129 km/h) | 01h 44m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $18.67 | $37.33 |
| Mid-grade | $4.25 | $21.05 | $42.10 |
| Premium | $4.65 | $23.04 | $46.07 |
| Diesel | $5.30 | $26.25 | $52.51 |
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 15, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.