Origin
O'Fallon, MO
Afternoon in O'Fallon on Sunday
Local time
3:35 PM
CDT
Current temp
53°F
Unavailable
Live forecast
Trip from O'Fallon, MO to Arnold, MO
Drive Time
54m
Distance
41.4 mi
67 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Loading...
station data
Best Time to Leave
4 AM
0h 50m
★
6 AM
0h 54m
8 AM
1h 3m
10 AM
0h 57m
12 PM
0h 56m
3 PM
0h 58m
5 PM
1h 3m
8 PM
0h 52m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
O'Fallon, MO
Valeria Boltneva
Arnold, MO
Valeria Boltneva
Trip Overview
If you are planning a quick trip from O'Fallon to Arnold, Missouri, expect a straightforward journey covering approximately 41.4 miles. This drive typically takes about 54 minutes, making it an ideal excursion for a single day. You will primarily navigate via I-70, I-270, and the Officer Thomas G. Smith, Jr. Memorial Highway. With a fuel budget of just $6, this commute is highly economical for travelers moving between these two points in the Midwest. Since the entire route is contained within the same region, you won't experience drastic climate or geographic shifts. It is a practical, efficient drive that serves as a simple connection rather than a multi-day expedition.
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
20.7 miles from O'Fallon, MO
A natural place for your longest stop of the day , about 27m into the drive .
Drive Character
This is a highway-focused drive, with 82% of your time spent on major thoroughfares. You will experience a very consistent rhythm behind the wheel as you navigate the interstate system. The longest uninterrupted stretch is 19 miles on I-270, which allows for steady cruising speed. Expect a functional, high-speed experience rather than a winding backroads tour. By prioritizing major highways, the route minimizes local traffic light stops, helping you maintain a predictable pace from start to finish.
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.
Elevation Profile
Mostly flat terrain
633 ft
446 ft
Total Climb
500 ft
Total Descent
352 ft
Highest Point
633 ft
~20.7 mi in
Elevation Range
187 ft
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 15.1 miles in.
Route Complexity
10/10
High effort - long or complex enough to need steady focus all day
This is a demanding drive. With 13 significant decision points across 41.4 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 15.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 15.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 34.8 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
15.1 mi into trip
|
~20m 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
15.2 mi into trip
|
~20m 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
34.8 mi into trip
|
~44m 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
39.9 mi into trip
|
~51m 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
40.1 mi into trip
|
~51m 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 Along This Route
On the drive from O'Fallon, MO to Arnold, MO, road signs begin pointing toward Memphis along the way.
Memphis
15.1 mi in
|
~20m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 19 mi | 23m |
| I 70 | 13.5 mi | 16m |
| Officer Thomas G. Smith, Jr. Memorial Highway | 1.8 mi | 2m |
| Rosa Parks Highway | 1.5 mi | 1m |
| Police Officer Steven Jarvis Memorial Highway | 0.9 mi | 1m |
| Jeffco Boulevard | 0.9 mi | 1m |
| Drennen Parkway | 0.9 mi | 1m |
| South Main Street | 0.6 mi | 1m |
Longest stretch:
I 270
— 19 mi, about 23m
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Arnold, MO.
1
Start on this road
25 ft
·
7 sec
·
this road
2
Turn left onto South Main Street
0.6 mi
·
1 min
·
South Main Street
3
Turn left onto Drennen Parkway
0.9 mi
·
1 min
·
Drennen Parkway
Use the left lane.
4
Take the ramp
438 ft
·
6 sec
Toward I 70 East: Saint Louis
Use the slight left lane.
5
Merge onto I 70
14 mi
·
16 min
·
I 70
Use the straight / slight right lanes.
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
Trip Plan
Because this is a short trip, you have plenty of flexibility in your schedule to avoid peak traffic hours. You can easily complete the 54-minute drive without needing any planned stops for fuel or rest. Since your fuel costs are low at $6, you might consider filling up before you leave O'Fallon to avoid stopping mid-transit. Keep a close eye on your GPS while navigating the transition between I-70 and I-270, as the highway junctions are the most complex part of your journey. Enjoy the simplicity of this direct route and use the time saved to focus on your destination in Arnold.
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 20.7 miles from O'Fallon, MO, or about 27m into the drive.
The longest continuous stretch on this route runs about 19 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 41.4 miles or 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 20.7 miles or 27m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 45m
Traffic, exits, and arrival timing usually matter more near Arnold, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving O'Fallon, 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 O'Fallon, MO
This is one driving day of about 41.4 miles and 54m.
Your first comfortable stop window is around 80 miles from O'Fallon, 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 19 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 20.7 mi from O'Fallon, MO · 27m into the drive
Mid-route town
Meal stop
21 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 41.4 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 20.7 miles from O'Fallon, MO, which is a good place for a longer meal and fuel stop.
Arriving in Arnold, MO
The final approach into Arnold, 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 Arnold, 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
$6.29 one way
$12.58 round trip
$3.86/gal
25.4 MPG avg
15 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $6.93 | $13.86 |
| premium | $4.80 | $7.82 | $15.63 |
| diesel | $5.64 | $9.20 | $18.40 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$6
Meals
$25–$50
Total
$31–$56
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 14.5 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $4 in charging · 0 stops · 64% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 12.4 | 0 | $4.35 | $1.99 |
| Efficient EV | 10.4 | 0 | $3.62 | $1.66 |
| EV Truck/SUV | 16.6 | 0 | $5.80 | $2.65 |
Gas CO2
14 kg
EV CO2
5 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
Afternoon in Arnold on Sunday
Local time
3:35 PM
CDT
Current temp
54°F
Unavailable
Live forecast
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
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
54m 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 O'Fallon, MO to Arnold, MO covers 41.4 miles and takes about 54m 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 20.7 miles from O'Fallon, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $6.29 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 13 significant decision points across 41.4 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 15.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 15.2 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 34.8 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one.
On the drive from O'Fallon, MO to Arnold, MO, road signs begin pointing toward Memphis along the way.
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