Origin
Crestwood, MO
Morning in Crestwood on Saturday
Local time
8:07 AM
CDT
Current temp
55°F
Unavailable
Live forecast
Trip from Crestwood, MO to O'Fallon, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
44m
Distance
32.4 mi
52 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Good
6 stations
Best Time to Leave
4 AM
0h 41m
★
6 AM
0h 45m
8 AM
0h 52m
10 AM
0h 47m
12 PM
0h 47m
3 PM
0h 48m
5 PM
0h 52m
8 PM
0h 43m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Crestwood, MO
Theodore Nguyen
O'Fallon, MO
Wikimedia Commons
Trip Overview
The drive from Crestwood, MO to O'Fallon, MO covers 32.4 miles and takes about 44m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 70, I 270, Watson Road for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 13.6 miles on I 70. At current regular gas prices, budget about $5.07 one way before food or hotel costs.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 44m. Total distance: 32.4 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
44m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (81%). Some complex stretches to watch for.
Drive Character
This is a 44m highway drive covering 32.4 miles, with most of the trip on I 70 and I 270. The longest continuous stretch is about 13.6 miles on I 70.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 17 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 13.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 and I 270. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes early in the drive.
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 14 decision points packed into just 32.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 44m.
Where does it get tricky?
The main spots that need attention: near the start: Lane positioning matters here; at 0.1 miles (MO 366 / Watson Road): Sharp turn - reduce speed on approach. Lane positioning matters here; at 2.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 14 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
7
0 mi into trip
|
~0m in
Turn left
Lane positioning matters here
Use the left lane.
7
0.1 mi into trip
|
~1m in
|
MO 366 / Watson Road
Turn sharp right onto MO 366 / Watson Road
Sharp turn - reduce speed on approach. Lane positioning matters here
Use the left lane.
8
2.4 mi into trip
|
~5m in
Keep slight right at fork toward I 270: Memphis, Chicago
Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight lane.
Toward I 270: Memphis, Chicago
8
15.5 mi into trip
|
~22m 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...
8
30.8 mi into trip
|
~41m in
Take the exit toward MO K: O'Fallon, Main Street
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 218
Toward MO K: O'Fallon, Main Street
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Crestwood, MO and O'Fallon, MO, road signs point toward Chicago, Memphis, Saint Louis and Saint Louis Lambert International Airport.
Chicago
2 mi in
|
~4m
|
via US Historic 66
Memphis
2 mi in
|
~4m
|
via US Historic 66
Saint Louis
15.5 mi in
|
~22m
Saint Louis Lambert International Airport
15.5 mi in
|
~22m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 13.6 mi | 16m |
| I 270 | 12.6 mi | 15m |
| Watson Road | 1.9 mi | 3m |
| East Terra Lane | 0.9 mi | 1m |
| South Main Street | 0.5 mi | 1m |
| US Historic 66 | 0.4 mi | <1m |
Longest stretch:
I 70
— 13.6 mi, about 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Crestwood, MO and O'Fallon, MO.
1
Start on MO 366
63 ft
·
7 sec
·
Watson Road
2
Turn left
378 ft
·
33 sec
Use the left lane.
3
Turn sharp left
330 ft
·
27 sec
4
Turn sharp right onto MO 366
1.9 mi
·
3 min
·
Watson Road
Use the left lane.
5
Take the ramp onto US Historic 66
0.4 mi
·
40 sec
·
US Historic 66
Toward I 44 West, I 270, US 50 West: Tulsa, Chicago, Memphis
6
Keep slight right at fork
0.1 mi
·
15 sec
Toward I 270: Memphis, Chicago
Use the straight lane.
7
Keep slight right at fork
0.4 mi
·
37 sec
Toward I 270 North: Chicago
Use the slight right lane.
8
Merge onto I 270
13 mi
·
15 min
·
I 270
Use the straight lane.
9
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.
10
Keep slight left at fork
0.1 mi
·
11 sec
Toward I 70 West: Kansas City
Use the slight left lane.
11
Continue on this road
0.6 mi
·
57 sec
·
this road
Exit 20B
Toward I 70 West: Kansas City
12
Merge onto I 70
14 mi
·
16 min
·
I 70
Use the straight / slight right lanes.
13
Take the exit
390 ft
·
8 sec
Exit 218
Toward MO K: O'Fallon, Main Street
Use the slight right lane.
14
Turn straight onto East Terra Lane
0.9 mi
·
1 min
·
East Terra Lane
Use the straight lane.
15
Turn right onto South Main Street
0.5 mi
·
1 min
·
South Main Street
16
Turn right
25 ft
·
1 sec
17
Arrive at destination
Fuel & Cost
Regular Gas
$5.07 one way
$10.13 round trip
$3.97/gal
25.4 MPG avg
11 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $5.56 | $11.12 |
| premium | $4.89 | $6.24 | $12.47 |
| diesel | $5.61 | $7.15 | $14.31 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 11.3 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 | 9.7 | 0 | $3.40 | $1.56 |
| Efficient EV | 8.1 | 0 | $2.83 | $1.30 |
| EV Truck/SUV | 13 | 0 | $4.54 | $2.07 |
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
O'Fallon, MO
Morning in O'Fallon on Saturday
Local time
8:07 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
2 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
44m 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 Crestwood, MO to O'Fallon, MO covers 32.4 miles and takes about 44m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, I 270, Watson Road. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 16.2 miles from Crestwood, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $5.07 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 14 decision points packed into just 32.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 44m.
The main spots that need attention: near the start: Lane positioning matters here; at 0.1 miles (MO 366 / Watson Road): Sharp turn - reduce speed on approach. Lane positioning matters here; at 2.4 miles: Highway fork - watch signs carefully. Lane positioning matters here. Multiple destination signs - pick the right one.
Between Crestwood, MO and O'Fallon, MO, road signs point toward Chicago, Memphis, Saint Louis and Saint Louis Lambert International Airport.
Yes. Nearby national parks include Gateway Arch National Park.
How this page is built
Compiled by the Trip.ovh 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 O'Fallon, MO
More trips to O'Fallon, MO
Explore more options from Crestwood, MO or browse trips ending in O'Fallon, MO.
Looking for more statewide routes? Browse MO road trips.