Origin
Herculaneum, MO
Late night in Herculaneum on Sunday
Local time
5:12 AM
CDT
Current temp
55°F
Unavailable
Live forecast
Trip from Herculaneum, MO to Florissant, MO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
1h
Distance
46.5 mi
75 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$7
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 56m
★
6 AM
1h 1m
8 AM
1h 11m
10 AM
1h 4m
12 PM
1h 3m
3 PM
1h 5m
5 PM
1h 10m
8 PM
0h 58m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Herculaneum, MO
Wikimedia Commons
Florissant, MO
Wikimedia Commons
Trip Overview
Herculaneum to Florissant is 46.5 miles and takes about 1 hour via I 270, I 55, and North Lindbergh Boulevard, with a fuel budget near $7 and enough daylight to finish in a day. This drive stays within the Midwest region of Missouri, offering a straightforward journey between two points. With a short travel time and a focus on major roads, this is a practical option for getting from point A to point B without extensive planning. Consider this route if you need an efficient way to cover this distance with minimal fuss.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 24.4 mi | 30m |
| I 55 | 13.9 mi | 15m |
| North Lindbergh Boulevard | 1.8 mi | 3m |
| Rosa Parks Highway | 1.3 mi | 1m |
| Commercial Boulevard | 1.3 mi | 2m |
| West Washington Street | 1 mi | 2m |
| Joachim Avenue | 0.6 mi | 1m |
| MO Z | 0.4 mi | <1m |
Longest stretch:
I 270
— 24.4 mi, about 30m
Turn-by-Turn Driving Directions
Step-by-step road directions between Herculaneum, MO and Florissant, MO.
1
Start on this road
56 ft
·
7 sec
·
this road
2
Turn right onto Joachim Avenue
0.6 mi
·
1 min
·
Joachim Avenue
3
At end of road, turn right onto US 61; US 67
1.3 mi
·
2 min
·
Commercial Boulevard
4
Turn left onto MO Z
0.4 mi
·
44 sec
·
MO Z
5
Take the ramp
0.3 mi
·
42 sec
Toward I 55 North: Saint Louis
6
Merge onto I 55
14 mi
·
15 min
·
I 55
7
Continue on I 55
1.3 mi
·
1 min
·
Rosa Parks Highway
8
Take the exit
0.2 mi
·
27 sec
Exit 196
Toward I 270 West, I 255 East: Kansas City, Chicago
Use the slight right lane.
9
Keep slight left at fork
388 ft
·
8 sec
Toward I 270 West: Kansas City
Use the slight left lane.
10
Continue on this road
0.7 mi
·
1 min
·
this road
Exit 196
Toward I 270 West
11
Merge onto I 270
24 mi
·
30 min
·
I 270
Use the straight lane.
12
Take the exit
0.3 mi
·
44 sec
Exit 25
Toward US 67
Use the straight / slight right lanes.
13
Turn left onto US 67
1.8 mi
·
3 min
·
North Lindbergh Boulevard
Use the left lane.
14
Turn right onto West Washington Street
1.0 mi
·
2 min
·
West Washington Street
15
Turn left onto North New Florissant Road
87 ft
·
1 sec
·
North New Florissant Road
16
Arrive at destination
North New Florissant Road
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
23 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 10 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 23.2 miles from Herculaneum, MO, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 115 decision points cluster between mile 17.9 and 43.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
17.9 mi into trip
|
~22m in
Take the exit toward I 270 West, I 255 East: Kansas City, Chicago
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Exit 196
Toward I 270 West, I 255 East: Kansas City, Chi...
8
18.2 mi into trip
|
~22m in
Keep slight left at fork toward I 270 West: Kansas City
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 270 West: Kansas City
5
19 mi into trip
|
~24m in
|
I 270
Merge onto I 270
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
7
43.4 mi into trip
|
~54m in
Take the exit toward US 67
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the straight / slight right lanes.
Exit 25
Toward US 67
6
43.7 mi into trip
|
~55m in
|
US 67 / North Lindbergh Boulevard
Turn left onto US 67 / North Lindbergh Boulevard
Lane positioning matters here
Use the left lane.
Fuel & Cost
Regular Gas
$7.27 one way
$14.54 round trip
$3.97/gal
25.4 MPG avg
16 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $7.98 | $15.96 |
| premium | $4.89 | $8.95 | $17.90 |
| diesel | $5.61 | $10.27 | $20.53 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$7
Estimated CO2 emission: 16.3 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $5 in charging · 0 stops · 69% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 14 | 0 | $4.88 | $2.23 |
| Efficient EV | 11.6 | 0 | $4.07 | $1.86 |
| EV Truck/SUV | 18.6 | 0 | $6.51 | $2.98 |
Gas CO2
16 kg
EV CO2
5 kg (69% 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
Florissant, MO
Late night in Florissant on Sunday
Local time
5:12 AM
CDT
Current temp
83°F
Unavailable
Live forecast
80°F
Fenton, MO
23 mi in
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
28 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
1h on the road
Use the two city cards together: check the sky where you start, then compare it with the local time and temperature at arrival.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
What kind of drive is this?
This route is primarily a highway-focused drive, with 82% of the journey taking place on major roadways like I 270 and I 55. You'll experience stretches of consistent speed, including a significant 24.4-mile segment on I 270 without major interruptions. The character of the drive is defined by its efficiency and speed, allowing you to cover ground quickly. Expect a smooth, predictable experience as you navigate these main arteries.
82% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 24.4 mi on I 270.
How Hard Is This Drive?
7/10
This is a straightforward highway drive that stays mostly on I 270 and I 55. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 17.9 miles in.
Driving Effort
7/10
Demanding - plan breaks and stay ahead of the key maneuvers
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 46.5 miles you will encounter 11 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 17.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 19 miles (I 270): Merge point - match speed before joining. Lane positioning matters here.
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.
On the drive from Herculaneum, MO to Florissant, MO, road signs begin pointing toward Chicago along the way.
Chicago
17.9 mi in
|
~22m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h. Total distance: 46.5 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (82%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 24.4 miles on I 270. 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 Florissant, 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 17.9 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 18.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 19 miles (I 270): Merge point - match speed before joining. Lane positioning matters here.
Yes — Gateway Arch National Park and Ste. Geneviève National Historical 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 Florissant, 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, and NPS for national parks. See our methodology for refresh cadence and limitations.
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