Origin
Brentwood, MO
Afternoon in Brentwood on Sunday
Local time
2:42 PM
CDT
Current temp
59°F
Unavailable
Live forecast
Trip from Brentwood, MO to Saint Charles, MO
Drive Time
27m
Distance
19 mi
31 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
Brentwood, MO
Valeria Boltneva
Saint Charles, MO
SHAHBAZ ZAMAN
Trip Overview
If you are planning a quick excursion within the Midwest, the 19-mile commute from Brentwood to Saint Charles is a straightforward, efficient trip. Expect to spend about 27 minutes behind the wheel, making this an ideal day trip that requires no overnight stay. You will primarily navigate via the Daniel Boone Expressway, I-270, and I-70 to reach your destination. With a fuel cost estimate of just $3, this drive is as budget-friendly as it is convenient. Whether you are heading out for business or leisure, the route is designed for speed and direct access between these two Missouri locations.
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
9.5 miles from Brentwood, MO
A natural place for your longest stop of the day , about 13m into the drive .
Drive Character
This highway-focused drive keeps you moving quickly, with 65% of your time spent on major interstates. You will face a very consistent experience, as the longest uninterrupted stretch lasts only 6.1 miles on I-270. Expect a standard interstate environment rather than a scenic backroad cruise, as the route prioritizes efficiency over winding, technical turns. The transition between the Daniel Boone Expressway and the surrounding highway network is seamless, keeping the pace steady throughout the short journey. It is a functional, no-nonsense path that gets you from point A to point B without any complex navigation.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 20 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 270 is the longest continuous segment at about 6.1 miles.
Elevation Profile
Mostly flat terrain
641 ft
460 ft
Total Climb
373 ft
Total Descent
364 ft
Highest Point
641 ft
~5.6 mi in
Elevation Range
182 ft
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 270 and Daniel Boone Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 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 16 significant decision points across 19 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 1 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 6.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 6.6 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Critical Maneuvers
5 of 16 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
1 mi into trip
|
~2m in
Take the ramp toward I 64 West, US 40 West
Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / left lanes.
Toward I 64 West, US 40 West
8
6.5 mi into trip
|
~9m in
Take the exit toward I 270: Memphis, 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 25
Toward I 270: Memphis, Chicago
8
6.6 mi into trip
|
~9m in
Keep slight right at fork toward I 270 North: Chicago
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 270 North: Chicago
8
12.9 mi into trip
|
~17m in
Take the exit toward I 70: Kansas City, Saint Louis, Saint Louis Lambert International Airport
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 20A
Toward I 70: Kansas City, Saint Louis, Saint Lo...
9
17.6 mi into trip
|
~23m in
Keep slight right at fork toward I 70 Business: Fifth Street North, Bass Pro Drive, Ameristar Boulevard
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the right lane.
Toward I 70 Business: Fifth Street North, Bass...
Towns Along This Route
Between Brentwood, MO and Saint Charles, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Chicago
6.5 mi in
|
~9m
Saint Louis
12.9 mi in
|
~17m
Saint Louis Lambert International Airport
12.9 mi in
|
~17m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 6.1 mi | 7m |
| Daniel Boone Expressway | 3.4 mi | 4m |
| I 70 | 2.7 mi | 3m |
| Avenue of the Saints | 1.8 mi | 2m |
| South Fifth Street | 1 mi | 2m |
| South Brentwood Boulevard | 0.9 mi | 2m |
| Jefferson Street | 0.2 mi | <1m |
| North Second Street | 0.2 mi | <1m |
Longest stretch:
I 270
— 6.1 mi, about 7m
Turn-by-Turn Driving Directions
Step-by-step road directions between Brentwood, MO and Saint Charles, MO.
1
Start on this road
68 ft
·
6 sec
·
this road
2
Turn right
59 ft
·
6 sec
3
Turn right onto Litzsinger Road
300 ft
·
12 sec
·
Litzsinger Road
4
Turn left onto South Brentwood Boulevard
0.9 mi
·
2 min
·
South Brentwood Boulevard
Use the none lane.
5
Take the ramp
0.3 mi
·
26 sec
Toward I 64 West, US 40 West
Use the straight / left lanes.
6
Merge onto I 64; US 40
3.4 mi
·
4 min
·
Daniel Boone Expressway
Use the straight lane.
7
Continue on I 64; US 40; US 61
1.8 mi
·
2 min
·
Avenue of the Saints
Use the straight lane.
8
Take the exit
0.1 mi
·
16 sec
Exit 25
Toward I 270: Memphis, Chicago
Use the slight right lane.
9
Keep slight right at fork
0.3 mi
·
25 sec
Toward I 270 North: Chicago
Use the slight right lane.
10
Merge onto I 270
6.1 mi
·
7 min
·
I 270
Use the none lane.
11
Take the exit
1.0 mi
·
1 min
Exit 20A
Toward I 70: Kansas City, Saint Louis, Saint Louis Lambert International Airport
Use the slight right lane.
12
Keep slight left at fork
0.1 mi
·
11 sec
Toward I 70 West: Kansas City
Use the slight left lane.
13
Continue on this road
0.6 mi
·
57 sec
·
this road
Exit 20B
Toward I 70 West: Kansas City
14
Merge onto I 70
2.7 mi
·
3 min
·
I 70
Use the none lane.
15
Take the exit onto I 70 Business
0.2 mi
·
17 sec
·
I 70 Business
Exit 229B
Toward I 70 Business: Fifth Street
Use the straight / slight right lanes.
16
Keep slight right at fork
231 ft
·
5 sec
Toward I 70 Business: Fifth Street North, Bass Pro Drive, Ameristar Boulevard
Use the right lane.
17
Turn slight right onto I 70 Business
1.0 mi
·
2 min
·
South Fifth Street
Use the right lane.
18
Turn right onto Jefferson Street
0.2 mi
·
44 sec
·
Jefferson Street
19
Turn left onto North Second Street
0.2 mi
·
34 sec
·
North Second Street
20
Arrive at destination
North Second Street
Trip Plan
Since this is a short 19-mile sprint, you have maximum flexibility regarding your departure time. You can easily complete the entire drive in under half an hour, so there is no need to worry about planning for multiple rest stops along the way. Keep in mind that because the route is entirely highway-based, traffic patterns on I-270 and I-70 will have the biggest impact on your travel time. To ensure a smoother experience, try to avoid peak rush hours when highway congestion is at its highest. Because the fuel cost is a negligible $3, you can focus your travel budget on whatever activities you have planned once you arrive in Saint Charles.
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 9.5 miles from Brentwood, MO, or about 13m into the drive.
The longest continuous stretch on this route runs about 6.1 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 19 miles or 27m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 9.5 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 Saint Charles, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Brentwood, 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 Brentwood, MO
This is one driving day of about 19 miles and 27m.
Your first comfortable stop window is around 80 miles from Brentwood, 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 270 for about 6.1 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 9.5 mi from Brentwood, MO · 13m into the drive
Mid-route town
Meal stop
10 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 19 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 9.5 miles from Brentwood, MO, which is a good place for a longer meal and fuel stop.
Arriving in Saint Charles, MO
The final approach into Saint Charles, 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 Saint Charles, 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
$2.89 one way
$5.77 round trip
$3.86/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $3.18 | $6.36 |
| premium | $4.80 | $3.59 | $7.17 |
| diesel | $5.64 | $4.22 | $8.44 |
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: 6.6 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $2 in charging · 0 stops · 71% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 5.7 | 0 | $1.99 | $0.91 |
| Efficient EV | 4.8 | 0 | $1.66 | $0.76 |
| EV Truck/SUV | 7.6 | 0 | $2.66 | $1.22 |
Gas CO2
7 kg
EV CO2
2 kg (71% 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
Saint Charles, MO
Afternoon in Saint Charles on Sunday
Local time
2:42 PM
CDT
Current temp
75°F
Slight Chance Rain Showers
SE 8 mph
23% chance
Live forecast
Flood Warning
Flood Warning issued April 11 at 11:35AM CDT by NWS St Louis MO
Flood Warning
Flood Warning issued April 11 at 11:35AM 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
16 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 Brentwood, MO to Saint Charles, MO covers 19 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 270, Daniel Boone Expressway, I 70. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 9.5 miles from Brentwood, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $2.89 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 16 significant decision points across 19 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 1 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 6.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 6.6 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Between Brentwood, MO and Saint Charles, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Mostly flat terrain. The route ranges from 460 ft to 641 ft elevation with about 373 ft of total climbing.
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