Origin
Saint Charles, MO
Late night in Saint Charles on Friday
Local time
3:37 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from Saint Charles, MO to Arnold, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 17, 2026 · Editorial standards
Drive Time
41m
Distance
30.7 mi
49 km
Drive Score
7/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 38m
★
6 AM
0h 42m
8 AM
0h 49m
10 AM
0h 44m
12 PM
0h 44m
3 PM
0h 45m
5 PM
0h 48m
8 PM
0h 40m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Charles, MO
Wikimedia Commons
Arnold, MO
Wikimedia Commons
Trip Overview
The drive from Saint Charles, MO to Arnold, MO covers 30.7 miles and takes about 41m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 270, I 70, Officer Thomas G. Smith, Jr. Memorial Highway for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 19 miles on I 270. At current regular gas prices, budget about $4.80 one way before food or hotel costs.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 41m. Total distance: 30.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
41m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (72%). Some complex stretches to watch for.
Drive Character
This is a 41m highway drive covering 30.7 miles, with most of the trip on I 270 and I 70. The longest continuous stretch is about 19 miles on I 270.
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 19 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 270 and I 70. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 4.3 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 13 decision points packed into just 30.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 41m.
Where does it get tricky?
The main spots that need attention: at 4.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 24.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 13 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
8
4.3 mi into trip
|
~7m in
Take the exit toward I 270: Chicago, Memphis
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 232
Toward I 270: Chicago, Memphis
7
4.5 mi into trip
|
~8m in
Keep slight right at fork toward I 270 South: Memphis
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 270 South: Memphis
8
24.1 mi into trip
|
~32m in
Take the exit toward I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 1A
Toward I 55, US 61, US 67: Saint Louis, Memphis...
7
29.1 mi into trip
|
~38m in
Take the exit toward MO 141: Arnold
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 191
Toward MO 141: Arnold
8
29.4 mi into trip
|
~39m in
Keep slight left at fork toward MO 141 South: Arnold
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward MO 141 South: Arnold
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 Saint Charles, MO to Arnold, MO, road signs begin pointing toward Memphis along the way.
Memphis
4.3 mi in
|
~7m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 19 mi | 23m |
| I 70 | 2.7 mi | 3m |
| Officer Thomas G. Smith, Jr. Memorial Highway | 1.8 mi | 2m |
| Rosa Parks Highway | 1.5 mi | 1m |
| South Fifth Street | 1.1 mi | 2m |
| Police Officer Steven Jarvis Memorial Highway | 0.9 mi | 1m |
| Jeffco Boulevard | 0.9 mi | 1m |
| MO 141 | 0.3 mi | <1m |
Longest stretch:
I 270
— 19 mi, about 23m
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Charles, MO and Arnold, MO.
1
Start on North Second Street
0.2 mi
·
38 sec
·
North Second Street
2
Turn right onto Jefferson Street
0.2 mi
·
44 sec
·
Jefferson Street
3
Turn left onto MO 94
1.1 mi
·
2 min
·
South Fifth Street
Use the straight / right lanes.
4
Take the ramp
0.2 mi
·
14 sec
Toward I 70 East
Use the left / straight lanes.
5
Merge onto I 70
2.7 mi
·
3 min
·
I 70
6
Take the exit
0.2 mi
·
12 sec
Exit 232
Toward I 270: Chicago, Memphis
Use the slight right lane.
7
Keep slight right at fork
0.4 mi
·
33 sec
Toward I 270 South: Memphis
Use the slight right lane.
8
Continue on this road
0.1 mi
·
10 sec
·
this road
Exit 232
Toward I 270 South: Memphis
9
Merge onto I 270
19 mi
·
23 min
·
I 270
Use the straight lane.
10
Take the exit
0.4 mi
·
27 sec
Exit 1A
Toward I 55, US 61, US 67: Saint Louis, Memphis, Lemay Ferry Road
Use the straight / slight right lanes.
11
Keep slight right at fork
0.4 mi
·
43 sec
Toward I 55 South: Memphis
12
Merge onto I 55
1.5 mi
·
1 min
·
Rosa Parks Highway
13
Continue on I 55
1.8 mi
·
2 min
·
Officer Thomas G. Smith, Jr. Memorial Highway
14
Continue on I 55
0.9 mi
·
1 min
·
Police Officer Steven Jarvis Memorial Highway
15
Take the exit
0.2 mi
·
27 sec
Exit 191
Toward MO 141: Arnold
Use the slight right lane.
16
Keep slight left at fork
438 ft
·
12 sec
Toward MO 141 South: Arnold
Use the slight left lane.
17
Merge onto MO 141
0.2 mi
·
13 sec
·
MO 141
18
Continue on MO 141
0.2 mi
·
20 sec
·
MO 141
19
Turn right onto US 61; US 67
0.9 mi
·
1 min
·
Jeffco Boulevard
20
Arrive at destination
US 61; US 67
Fuel & Cost
Regular Gas
$4.80 one way
$9.60 round trip
$3.97/gal
25.4 MPG avg
11 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $5.27 | $10.54 |
| premium | $4.89 | $5.91 | $11.82 |
| diesel | $5.61 | $6.78 | $13.56 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 10.7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $3 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 9.2 | 0 | $3.22 | $1.47 |
| Efficient EV | 7.7 | 0 | $2.69 | $1.23 |
| EV Truck/SUV | 12.3 | 0 | $4.30 | $1.96 |
Gas CO2
11 kg
EV CO2
4 kg (64% 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
Arnold, MO
Late night in Arnold on Friday
Local time
3:37 AM
CDT
Current temp
57°F
Unavailable
Live forecast
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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
41m 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.
Frequently Asked Questions
The drive from Saint Charles, MO to Arnold, MO covers 30.7 miles and takes about 41m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 270, I 70, Officer Thomas G. Smith, Jr. Memorial Highway. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 15.3 miles from Saint Charles, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $4.80 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 short but busy drive. With 13 decision points packed into just 30.7 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 41m.
The main spots that need attention: at 4.3 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.5 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 24.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from Saint Charles, MO to Arnold, MO, road signs begin pointing toward Memphis along the way.
How this page is built
Compiled and maintained by the Trip.ovh planning team at COD Solutions Oy (Helsinki). Each route is built from authoritative open government and mapping datasets rather than crowdsourced reviews. Distances and geometry come from OSRM over OpenStreetMap. Fuel cost uses EIA weekly regional averages. Pages are published only after passing our data-quality checks; our methodology page documents refresh cadence, editorial standards, and known limitations.
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