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Trip from Barnhart, 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

49m

Distance

37.5 mi

60 km

Drive Score

6/10

Good drive

Same Day?

Yes, doable

Fuel Cost

$6

one way

EV Charging

Unknown

Best Time to Leave

Save up to 12 min
4 AM
0h 46m ★
6 AM
0h 50m
8 AM
0h 58m
10 AM
0h 53m
12 PM
0h 52m
3 PM
0h 53m
5 PM
0h 58m
8 PM
0h 47m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

Best Time Drive vs Fly
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Downtown Barnhart, MO, MO

Barnhart, MO

Wikimedia Commons

city in and county seat of St. Charles County, Missouri, United States

Saint Charles, MO

Wikimedia Commons

Trip Overview

This straightforward 37.5-mile drive from Barnhart, MO, to Saint Charles, MO, will take you approximately 49 minutes to complete. It's a perfect candidate for a single-day trip, requiring no overnight stays. The route is predominantly highway-focused, with an estimated fuel cost of $6, making it an economical choice. You'll primarily be navigating on I-270, I-55, and I-70 as you travel within the Midwest region of Missouri. This is a practical, no-fuss journey ideal for when you need to get from point A to point B efficiently.

Main Roads

Road Distance Duration
I 270 18.1 mi 22m
I 55 9.6 mi 10m
I 70 2.7 mi 3m
Rosa Parks Highway 1.3 mi 1m
South Fifth Street 1 mi 2m
MO M 0.6 mi 1m
East Street 0.2 mi <1m
US 61 0.2 mi <1m
Longest stretch: I 270 — 18.1 mi, about 22m

Turn-by-Turn Driving Directions

Step-by-step road directions between Barnhart, MO and Saint Charles, MO.

1

Start on East Street

314 ft · 15 sec · East Street
2

Turn right onto Willing Street

133 ft · 10 sec · Willing Street
3

Turn left onto East Street

0.2 mi · 36 sec · East Street
4

Turn left onto US 61; US 67

0.2 mi · 31 sec · US 61; US 67
5

Turn left onto MO M

0.6 mi · 1 min · MO M
6

Take the ramp

0.3 mi · 17 sec
Toward I 55 North: Saint Louis
7

Merge onto I 55

9.6 mi · 10 min · I 55
8

Continue on I 55

1.3 mi · 1 min · Rosa Parks Highway
9

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.
10

Keep slight left at fork

388 ft · 8 sec
Toward I 270 West: Kansas City Use the slight left lane.
11

Continue on this road

0.7 mi · 1 min · this road
Exit 196 Toward I 270 West
12

Merge onto I 270

18 mi · 22 min · I 270
Use the straight lane.
13

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.
14

Keep slight left at fork

0.1 mi · 11 sec
Toward I 70 West: Kansas City Use the slight left lane.
15

Continue on this road

0.6 mi · 57 sec · this road
Exit 20B Toward I 70 West: Kansas City
16

Merge onto I 70

2.7 mi · 3 min · I 70
17

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.
18

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.
19

Turn slight right onto I 70 Business

1.0 mi · 2 min · South Fifth Street
Use the right lane.
20

Turn right onto Jefferson Street

0.2 mi · 44 sec · Jefferson Street
21

Turn left onto North Second Street

0.2 mi · 34 sec · North Second Street
22

Arrive at destination

North Second Street

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

city in St. Louis County, Missouri, United States

Mid-route town

Meal stop

Fenton, MO

19 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

Overland, MO

Fuel and coffee

A short stop after about 37.5 miles helps settle the day before fatigue starts building.

Kirkwood, MO

Meal break

The midpoint is around 18.8 miles from Barnhart, 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 17

5 decision points cluster between mile 12.2 and 36.1 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.

8
12.2 mi into trip | ~15m 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
12.5 mi into trip | ~15m 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
8
31.4 mi into trip | ~39m 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...
7
32.5 mi into trip | ~41m in

Keep slight left at fork toward I 70 West: Kansas City

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight left lane. Toward I 70 West: Kansas City
9
36.1 mi into trip | ~45m 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

$5.86 one way

$11.73 round trip

$3.97/gal 25.4 MPG avg 13 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.36 $6.44 $12.87
premium $4.89 $7.22 $14.43
diesel $5.61 $8.28 $16.56

No toll roads detected on this route.

Drive Cost (one way)

Fuel

$6

Estimated CO2 emission: 13.1 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $4 in charging · 0 stops · 69% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 11.3 0 $3.94 $1.80
Efficient EV 9.4 0 $3.28 $1.50
EV Truck/SUV 15 0 $5.25 $2.40

Gas CO2

13 kg

EV CO2

4 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.

Forecast as of Apr 17, 2026

Origin

Barnhart, MO

Night in Barnhart on Saturday

Local time

11:15 PM

CDT

Current temp

59°F

Mostly Clear

S 3 mph 2% chance Live forecast

Flood Warning

Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Flood Warning

Flood Warning issued April 16 at 10:12PM CDT by NWS St Louis MO

Destination

Saint Charles, MO

Night in Saint Charles on Saturday

Local time

11:15 PM

CDT

Current temp

57°F

Unavailable

Live forecast

80°F

Fenton, MO

19 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

2 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

49m 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 highway-focused drive for 82% of this 37.5-mile journey. The most significant uninterrupted stretch you'll encounter is 18.1 miles along I-270. This route offers a consistent driving experience, characterized by the steady pace of interstate travel. While not designed for scenic exploration, it provides a direct and efficient path through the region. The road's personality remains largely consistent, prioritizing speed and directness over varied terrain or winding paths.

82% highway — fuel and pacing are the main things to plan.
22 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 18.1 mi on I 270.

How Hard Is This Drive?

10/10

This is a straightforward highway drive that stays mostly on I 270 and I 55. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 12.2 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 17 decision points packed into just 37.5 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 49m.

Where does it get tricky?

The main spots that need attention: at 12.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 31.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

Towns Mentioned on Route Signs

Based on OSRM destination-sign hints, not a full list of every settlement the road passes.

Between Barnhart, MO and Saint Charles, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.

Chicago

12.2 mi in | ~15m

Saint Louis

31.4 mi in | ~39m

Saint Louis Lambert International Airport

31.4 mi in | ~39m

Who Is This Route For?

Weekend Trip

Doable as a same-day drive at 49m. Total distance: 37.5 miles.

Family Friendly

Moderate complexity with 0 natural rest stops along the way.

Solo Traveler

49m 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 18.1 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 12.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 12.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 31.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.

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, and NPS for national parks. See our methodology for refresh cadence and limitations.

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