Origin
Florissant, MO
Afternoon in Florissant on Sunday
Local time
3:52 PM
CDT
Current temp
46°F
Unavailable
Live forecast
Trip from Florissant, MO to St. Louis, MO
Drive Time
27m
Distance
17.7 mi
28 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
0h 25m
★
6 AM
0h 27m
8 AM
0h 32m
10 AM
0h 29m
12 PM
0h 28m
3 PM
0h 29m
5 PM
0h 31m
8 PM
0h 26m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Florissant, MO
Yaroslav Shuraev
Trip Overview
If you are traveling from Florissant to St. Louis, you are looking at a quick 17.6-mile commute that typically takes about 22 minutes. This brief journey within the Midwest requires only a single day, making it an easy trip to complete in one go. Budget roughly $3 for fuel to cover the distance, as the route is efficient and straightforward. Since you are staying within the same region, you will not need to worry about major shifts in geography or climate. Whether you are heading into the city for work or a quick visit, this drive is practical and requires no overnight stops.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
0 planned breaks
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
8.8 miles from Florissant, MO
A natural place for your longest stop of the day , about 13m into the drive .
Drive Character
Expect a turn-heavy local drive rather than a monotonous interstate haul. While you will navigate sections of I-270 West, the route also relies on Dunn Road and Rosemary Straub Davison Highway to bridge the gap between Florissant and St. Louis. Because this path is entirely composed of local and connector roads with no significant highway-only stretches, you should stay alert for frequent turns. The experience is defined by urban navigation rather than long, open-road cruising. You will find that the road character remains consistent throughout the 22-minute duration, keeping you engaged behind the wheel.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 18 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 8.4 miles.
Elevation Profile
Mostly flat terrain
599 ft
493 ft
Total Climb
69 ft
Total Descent
144 ft
Highest Point
599 ft
~6.6 mi in
Elevation Range
106 ft
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 and Inner Belt Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 2.1 miles in.
Route Complexity
10/10
High effort - long or complex enough to need steady focus all day
This is a demanding drive. With 12 significant decision points across 17.7 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 2.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 5.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 7.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 12 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
2.1 mi into trip
|
~4m in
Take the exit toward I 170 South: Clayton
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 26A
Toward I 170 South: Clayton
7
5.5 mi into trip
|
~8m in
Take the exit toward I 70 East: Saint Louis
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight left lane.
Exit 7A
Toward I 70 East: Saint Louis
7
7.4 mi into trip
|
~11m in
Take the exit toward Bermuda Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 241A
Toward Bermuda Road
8
7.7 mi into trip
|
~11m in
Keep slight left at fork toward I 70 East: Saint Louis
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 70 East: Saint Louis
7
16.2 mi into trip
|
~23m in
|
I 70 / Andy Gammon Memorial Highway
Keep slight right at fork onto I 70 / Andy Gammon Memorial Highway toward Illinois
Highway fork - watch signs carefully. Lane positioning matters here
Use the straight / slight right lanes.
Toward Illinois
Towns Along This Route
Between Florissant, MO and St. Louis, MO, road signs point toward Illinois and Saint Louis.
Illinois
16.2 mi in
|
~23m
|
via I 70
Saint Louis
16.3 mi in
|
~23m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 8.4 mi | 11m |
| Inner Belt Expressway | 2.9 mi | 3m |
| Andy Gammon Memorial Highway | 1.6 mi | 2m |
| North New Florissant Road | 1.2 mi | 2m |
| North Tucker Boulevard | 1.1 mi | 2m |
| Rosemary Straub Davison Highway | 0.5 mi | <1m |
| Dunn Road | 0.2 mi | <1m |
| South Tucker Boulevard | <0.1 mi | <1m |
Longest stretch:
I 70
— 8.4 mi, about 11m
Turn-by-Turn Driving Directions
Step-by-step road directions between Florissant, MO and St. Louis, MO.
1
Start on North New Florissant Road
1.2 mi
·
2 min
·
North New Florissant Road
2
Turn right onto Dunn Road
0.2 mi
·
29 sec
·
Dunn Road
Use the right lane.
3
Take the ramp
0.2 mi
·
30 sec
Toward I 270 West
4
Merge onto I 270
0.5 mi
·
36 sec
·
Rosemary Straub Davison Highway
5
Take the exit
0.5 mi
·
46 sec
Exit 26A
Toward I 170 South: Clayton
Use the straight / slight right lanes.
6
Continue on I 170
2.9 mi
·
3 min
·
Inner Belt Expressway
Use the slight left / straight lanes.
7
Take the exit
0.4 mi
·
44 sec
Exit 7A
Toward I 70 East: Saint Louis
Use the slight left lane.
8
Merge onto I 70
1.5 mi
·
2 min
·
I 70
9
Take the exit
0.3 mi
·
24 sec
Exit 241A
Toward Bermuda Road
Use the slight right lane.
10
Keep slight left at fork
0.2 mi
·
12 sec
Toward I 70 East: Saint Louis
Use the slight left lane.
11
Merge onto I 70
6.8 mi
·
9 min
·
I 70
Use the straight / slight right lanes.
12
Continue on I 70
1.5 mi
·
2 min
·
Andy Gammon Memorial Highway
Use the straight / slight right lanes.
13
Keep slight right at fork onto I 70
267 ft
·
6 sec
·
Andy Gammon Memorial Highway
Toward Illinois
Use the straight / slight right lanes.
14
Take the exit
0.3 mi
·
38 sec
Exit 249B
Toward Tucker Boulevard, Downtown Saint Louis
15
Continue on North Tucker Boulevard
1.1 mi
·
2 min
·
North Tucker Boulevard
16
Continue on South Tucker Boulevard
396 ft
·
21 sec
·
South Tucker Boulevard
17
Turn right onto Market Street
86 ft
·
2 sec
·
Market Street
18
Arrive at destination
Market Street
Trip Plan
Given the short 17.6-mile distance, you have plenty of flexibility regarding your departure time. Since the drive is so brief, there is no need to worry about pacing or mapping out rest stops along the way. You can easily complete the entire trip without refueling, keeping your out-of-pocket costs at that modest $3 estimate. To make the most of your time, plan your departure to avoid local peak traffic hours that might impact those frequent turns. Keep your navigation system ready, as the combination of Dunn Road and Rosemary Straub Davison Highway requires clear focus to ensure you stay on track.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 8.8 miles from Florissant, MO, or about 13m into the drive.
The longest continuous stretch on this route runs about 8.4 miles.
This is a comfortable same-day trip.
Departure
Before you leave
Start with fuel, water, and navigation already sorted so the first hour feels easy.
First stop
Around 17.7 miles or 27m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 8.8 miles or 13m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 21m
Traffic, exits, and arrival timing usually matter more near St. Louis, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Florissant, MO so your first major turns are already loaded.
+
Leave with enough water and a charging cable within reach, not packed away.
+
Check your fuel range against the first long segment, especially if you are starting outside city service areas.
Day 1
Settle into the route from Florissant, MO
This is one driving day of about 17.7 miles and 27m.
Your first comfortable stop window is around 80 miles from Florissant, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
You may only need one short stretch stop if conditions stay smooth.
The longest stretch is on I 70 for about 8.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 8.8 mi from Florissant, MO · 13m into the drive
Mid-route town
Meal stop
9 mi into the route
Best for: Lunch, fuel, and a longer reset
This sits close to the middle of the route, so it works well for the longest stop of the day.
Pacing Suggestions
Fuel and coffee
A short stop after about 17.7 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 8.8 miles from Florissant, MO, which is a good place for a longer meal and fuel stop.
Arriving in St. Louis, MO
The final approach into St. Louis, MO usually feels slower than the middle of the drive, so avoid planning your tightest schedule at the very end.
Try to arrive with enough fuel left to skip an immediate station stop unless you already know the area around St. Louis, MO.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$2.69 one way
$5.38 round trip
$3.86/gal
25.4 MPG avg
6 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $2.96 | $5.93 |
| premium | $4.80 | $3.34 | $6.68 |
| diesel | $5.64 | $3.93 | $7.86 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$3
Meals
$25–$50
Total
$28–$53
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 6.2 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $2 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.3 | 0 | $1.86 | $0.85 |
| Efficient EV | 4.4 | 0 | $1.55 | $0.71 |
| EV Truck/SUV | 7.1 | 0 | $2.48 | $1.13 |
Gas CO2
6 kg
EV CO2
2 kg (67% less)
This trip is well within single-charge range for most EVs. No charging stops needed if you start fully charged.
DC fast charging avg $0.35/kWh. Home charging avg $0.16/kWh. US grid CO2: 0.39 kg/kWh.
Travel Intel
Current conditions at both ends of the drive.
Destination
St. Louis, MO
Afternoon in St. Louis on Sunday
Local time
3:52 PM
CDT
Current temp
61°F
Partly Cloudy
S 8 mph
2% chance
Live forecast
Special Weather Statement
Special Weather Statement issued April 12 at 12:21AM CDT by NWS Paducah KY
Flood Warning
Flood Warning issued April 11 at 9:46PM CDT until April 18 at 1:00PM CDT by NWS St Louis MO
Seasonal Notes
Summer travel usually means heavier construction, hotter rest stops, and busier weekend traffic around major cities.
Winter travel shortens daylight, so a route that looks manageable on paper can feel much longer after dark.
Holiday weekends tend to make both departure and arrival windows slower than the raw route time suggests.
Time zone
Same local time
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
15 degrees warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
27m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
Frequently Asked Questions
The drive from Florissant, MO to St. Louis, MO covers 17.7 miles and takes about 27m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, Inner Belt Expressway, Andy Gammon Memorial Highway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 8.8 miles from Florissant, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $2.69 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a demanding drive. With 12 significant decision points across 17.7 miles, you will need to stay alert — especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
The main spots that need attention: at 2.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 5.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 7.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Between Florissant, MO and St. Louis, MO, road signs point toward Illinois and Saint Louis.
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