Origin
Florissant, MO
Late night in Florissant on Sunday
Local time
3:11 AM
CDT
Current temp
83°F
Unavailable
Live forecast
Trip from Florissant, MO to St. Louis, MO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
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
Unknown
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
Wikimedia Commons
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.
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
Heads-up: tricky spots
5 of 125 decision points cluster between mile 2.1 and 16.2 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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
Fuel & Cost
Regular Gas
$2.77 one way
$5.53 round trip
$3.97/gal
25.4 MPG avg
6 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $3.04 | $6.08 |
| premium | $4.89 | $3.41 | $6.81 |
| diesel | $5.61 | $3.91 | $7.82 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 6.2 kg one way. Prices: EIA weekly data, 2026-04-13.
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
Late night in St. Louis on Sunday
Local time
3:11 AM
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
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
22 degrees cooler 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.
What kind of drive is this?
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.
64% highway — fuel and pacing are the main things to plan.
18 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 8.4 mi on I 70.
How Hard Is This Drive?
10/10
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.
Driving Effort
10/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 12 decision points packed into just 17.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 27m.
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.
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
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
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
About the Cities
Arriving in St. Louis, MO
Full guide →The Gateway City of St. Louis is the epitome of the modern Midwestern metropolis. Missouri's second-largest city is vibrant but laid-back, populous but navigable, historic but still relevant. The city's planners have created an aesthetically beautiful city, with plenty of green space amidst buildings both old and new, framed by the majestic Mississippi and Missouri rivers. And capping it all is the world's tallest man-made monument, the beautiful and iconic Gateway Arch. St. Louis is a city of culture and surprisingly inexpensive. Among American cities, only Washington, D.C. has more free attractions for tourists and residents alike. Hotels, restaurants, and even parking garages avoid the premium pricing common in other big cities. Although often overlooked, St. Louis can be an affordable, educational, and fun family getaway.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 27m. Total distance: 17.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
27m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (64%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 8.4 miles on I 70. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at St. Louis, MO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
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.
Yes — Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at St. Louis, MO before heading back.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, and NPS for national parks. See our methodology for refresh cadence and limitations.
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