Origin
Brentwood, MO
Late night in Brentwood on Sunday
Local time
3:03 AM
CDT
Current temp
59°F
Unavailable
Live forecast
Trip from Brentwood, MO to Saint Charles, 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
19 mi
31 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 28m
8 AM
0h 32m
10 AM
0h 29m
12 PM
0h 29m
3 PM
0h 30m
5 PM
0h 32m
8 PM
0h 26m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Brentwood, MO
Valeria Boltneva
Saint Charles, MO
Wikimedia Commons
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.
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
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 straight 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
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
Heads-up: tricky spots
5 of 165 decision points cluster between mile 1 and 17.6 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
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...
Fuel & Cost
Regular Gas
$2.97 one way
$5.94 round trip
$3.97/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $3.26 | $6.52 |
| premium | $4.89 | $3.66 | $7.31 |
| diesel | $5.61 | $4.19 | $8.39 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 6.6 kg one way. Prices: EIA weekly data, 2026-04-13.
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
Late night in Saint Charles on Sunday
Local time
3:03 AM
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
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.
What kind of drive is this?
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.
65% highway — fuel and pacing are the main things to plan.
20 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 6.1 mi on I 270.
How Hard Is This Drive?
10/10
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.
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 16 decision points packed into just 19 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 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.
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
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 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
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 27m. Total distance: 19 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 (65%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 6.1 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 Saint Charles, 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 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.
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 Saint Charles, 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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