Origin
Arnold, MO
Morning in Arnold on Tuesday
Local time
8:25 AM
CDT
Current temp
71°F
Unavailable
Live forecast
Trip from Arnold, MO to Saint Charles, MO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
42m
Distance
30.8 mi
50 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 39m
★
6 AM
0h 42m
8 AM
0h 49m
10 AM
0h 45m
12 PM
0h 44m
3 PM
0h 45m
5 PM
0h 49m
8 PM
0h 40m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Arnold, MO
Wikimedia Commons
Saint Charles, MO
Wikimedia Commons
Trip Overview
Arnold, MO to Saint Charles, MO is 30.8 miles and takes about 42m via I 270, I 70, and Officer Thomas G. Smith, Jr. Memorial Highway, with a fuel budget near $5 and enough daylight to finish in a day. This trip stays within the Midwest region, specifically Missouri, making it a straightforward hop between two points. Given the short distance and mostly highway profile, it's ideal for a quick relocation or a day trip without significant time commitment. You'll be covering about 30 miles, so plan for minimal time on the road and maximum time at your destination.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 18.1 mi | 22m |
| I 70 | 2.7 mi | 3m |
| Officer Thomas G. Smith, Jr. Memorial Highway | 1.9 mi | 2m |
| Rosa Parks Highway | 1.3 mi | 1m |
| South Fifth Street | 1 mi | 2m |
| Jeffco Boulevard | 0.9 mi | 1m |
| Police Officer Steven Jarvis Memorial Highway | 0.9 mi | 1m |
| MO 141 | 0.2 mi | <1m |
Longest stretch:
I 270
— 18.1 mi, about 22m
Turn-by-Turn Driving Directions
Step-by-step road directions between Arnold, MO and Saint Charles, MO.
1
Start on US 61; US 67
0.9 mi
·
1 min
·
Jeffco Boulevard
Use the left lane.
2
Turn left onto MO 141
0.2 mi
·
27 sec
·
MO 141
Use the left lane.
3
Take the ramp
0.2 mi
·
30 sec
Toward I 55 North
4
Merge onto I 55
0.9 mi
·
1 min
·
Police Officer Steven Jarvis Memorial Highway
5
Continue on I 55
1.9 mi
·
2 min
·
Officer Thomas G. Smith, Jr. Memorial Highway
6
Continue on I 55
1.3 mi
·
1 min
·
Rosa Parks Highway
7
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.
8
Keep slight left at fork
388 ft
·
8 sec
Toward I 270 West: Kansas City
Use the slight left lane.
9
Continue on this road
0.7 mi
·
1 min
·
this road
Exit 196
Toward I 270 West
10
Merge onto I 270
18 mi
·
22 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 155 decision points cluster between mile 5.5 and 29.4 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
5.5 mi into trip
|
~7m 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
5.7 mi into trip
|
~8m 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
24.7 mi into trip
|
~32m 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
25.7 mi into trip
|
~33m 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
29.4 mi into trip
|
~38m 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
$4.82 one way
$9.63 round trip
$3.97/gal
25.4 MPG avg
11 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $5.29 | $10.57 |
| premium | $4.89 | $5.93 | $11.85 |
| diesel | $5.61 | $6.80 | $13.60 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 10.8 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 | $3.23 | $1.48 |
| Efficient EV | 7.7 | 0 | $2.70 | $1.23 |
| EV Truck/SUV | 12.3 | 0 | $4.31 | $1.97 |
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
Saint Charles, MO
Morning in Saint Charles on Tuesday
Local time
8:25 AM
CDT
Current temp
72°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
1 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
42m 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 mostly highway, with 69% of the 30.8 miles on major interstates like I 270 and I 70. The longest continuous stretch on a highway is 18.1 miles on I 270. You'll experience a significant amount of highway driving before transitioning to Officer Thomas G. Smith, Jr. Memorial Highway, which will feel like a change from the faster interstate speeds. Expect a steady flow of traffic typical of major routes connecting metropolitan areas.
69% 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: 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 70. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 5.5 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 15 decision points packed into just 30.8 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 42m.
Where does it get tricky?
The main spots that need attention: at 5.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 24.7 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.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Arnold, MO and Saint Charles, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Chicago
5.5 mi in
|
~7m
Saint Louis
24.7 mi in
|
~32m
Saint Louis Lambert International Airport
24.7 mi in
|
~32m
About the Cities
Arriving in Saint Charles, MO
Full guide →St. Charles, Missouri is outside of St. Louis on the bank of the Missouri River. It was Missouri's first state capital and was one of the first stops by Lewis and Clark on their journey to explore Louisiana Territory. The historic Main Street has largely been restored to its 1812-era appearance including gas lights a boardwalk and is lined with shops selling artwork, handicrafts, home decorations, antiques. There are also many restaurants.
City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 42m. Total distance: 30.8 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
42m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (69%). 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 5.5 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 5.7 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 24.7 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.
Was this helpful?
Thanks for your feedback!
Your tip has been submitted. Thanks!
/500
Recent Tips
·
Explore More
Continue From Saint Charles, MO
More trips to Saint Charles, MO
Explore more options from Arnold, MO or browse trips ending in Saint Charles, MO.
Looking for more statewide routes? Browse MO road trips.