O'Fallon, MO to Crocker, MO is 139.9 miles and takes about 2h 54m via I 44, with a fuel budget near $22 and enough daylight to finish in a day. This journey stays within the Midwest region, specifically in Missouri, making it a straightforward trip. Expect a drive that's predominantly highway, offering a generally efficient way to get from point A to point B. With a recommended one-day drive, you won't need to plan for overnight stays, allowing for a flexible schedule. It's a practical option if you're looking for a direct connection between these two points without extensive detours.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Break Rhythm
1 planned break
A short stop every 2 to 3 hours is enough for this drive.
Midpoint
70 miles from O'Fallon, MO
A natural place for your longest stop of the day
, about 1h 32m into the drive
.
Main Roads
Road
Distance
Duration
I 44
93.3 mi
1h 40m
MO 100
13.3 mi
18m
MO 17
11.2 mi
16m
MO K
6.5 mi
11m
MO 109
4.7 mi
7m
Avenue of the Saints
3.7 mi
4m
North Eatherton Road
2.4 mi
4m
I 44 Business
1.8 mi
3m
Longest stretch:
I 44
— 93.3 mi, about 1h 40m
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Crocker, MO.
1
Start on this road
25 ft·7 sec·this road
2
Turn left onto South Main Street
0.5 mi·1 min·South Main Street
3
Continue on MO K
3.1 mi·5 min·MO K
Use the left lane.
4
Continue on MO K
3.4 mi·5 min·MO K
Use the straight lane.
5
Take the ramp
0.3 mi·21 sec
Toward I 64 East, US 40 East, US 61 SouthUse the slight right lane.
6
Merge onto I 64; US 40; US 61
3.7 mi·4 min·Avenue of the Saints
7
Take the exit
0.5 mi·57 sec
Exit 14Toward Chesterfield Airport RoadUse the slight right lane.
8
Continue on Chesterfield Airport Road
361 ft·6 sec·Chesterfield Airport Road
9
Turn right
211 ft·5 sec
Toward Olive Street Road
10
Turn right onto Olive Street Road
0.9 mi·1 min·Olive Street Road
11
Continue on North Eatherton Road
2.4 mi·4 min·North Eatherton Road
12
Enter roundabout onto MO 109
70 ft·1 sec·MO 109
13
Continue on MO 109
4.3 mi·6 min·MO 109
14
Enter roundabout onto MO 109
94 ft·2 sec·MO 109
15
Continue on MO 109
0.4 mi·44 sec·MO 109
16
Enter roundabout
76 ft·1 sec
Toward MO 100 West: Gray Summit
17
Continue
0.2 mi·32 sec
Toward MO 100 West: Gray Summit
18
Merge onto MO 100
13 mi·18 min·MO 100
19
Take the exit
0.2 mi·14 sec
Toward I 44 West, US 50 West: St. Clair
20
Merge onto I 44; US 50
93 mi·1 hr 40 min·I 44; US 50
Use the straight lane.
21
Take the exit
0.2 mi·23 sec
Exit 159Toward I 44 Business: Waynesville
22
Turn straight onto I 44 Business; US Historic 66
1.8 mi·3 min·I 44 Business; US Historic 66
23
Turn right onto MO 17
11 mi·16 min·MO 17
24
Arrive at destination
MO 17; MO 133
Trip Plan
Given the relatively short duration of under 3 hours, this trip is easily manageable in a single day, offering flexibility in your departure time. You can plan to leave in the morning and arrive well before evening, or depart later in the day if it suits your schedule. With only one recommended stop and a fuel cost estimate of $22, budgeting is simple. Keep an eye on your fuel gauge, especially during the 93.3-mile stretch on I 44, to ensure you have enough to reach your destination or a convenient refueling point.
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.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 70 miles from O'Fallon, MO, or about 1h 32m into the drive.
The longest continuous stretch on this route runs about 93.3 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 31 miles or 49m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 70 miles or 1h 32m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 2h 20m
Traffic, exits, and arrival timing usually matter more near Crocker, 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 139.9 miles and 2h 54m.
Your first comfortable stop window is around 31 miles from O'Fallon, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 44 for about 93.3 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 15
5 decision points cluster between mile 7 and 33.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
7 mi into trip|~12m in
Take the ramp toward I 64 East, US 40 East, US 61 South
Lane positioning matters here. Multiple destination signs - pick the right one
Use the slight right lane.
Toward I 64 East, US 40 East, US 61 South
7
11 mi into trip|~17m in
Take the exit toward Chesterfield Airport Road
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 14
Toward Chesterfield Airport Road
5
19.7 mi into trip|~33m in
Enter roundabout toward MO 100 West: Gray Summit
Roundabout - know your exit number before entering
Toward MO 100 West: Gray Summit
5
33.2 mi into trip|~52m in
Take the exit toward I 44 West, US 50 West: St. Clair
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Toward I 44 West, US 50 West: St. Clair
5
33.5 mi into trip|~52m in|I 44; US 50
Merge onto I 44; US 50
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
Fuel & Cost
Regular Gas
$21.87 one way
$43.74 round trip
$3.97/gal25.4 MPG avg49 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$24.01
$48.03
premium
$4.89
$26.92
$53.84
diesel
$5.61
$30.89
$61.78
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$22
Meals
$25–$50
Total
$47–$72
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 48.9 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $15 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
42
0
$14.69
$6.72
Efficient EV
35
0
$12.24
$5.60
EV Truck/SUV
56
0
$19.59
$8.95
Gas CO2
49 kg
EV CO2
16 kg (67% 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 15, 2026
Origin
O'Fallon, MO
Late night
in O'Fallon on Sunday
Local time
2:41 AM
CDT
Current temp
57°F
Unavailable
Live forecast
Destination
Crocker, MO
Late night
in Crocker on Sunday
Local time
2:41 AM
CDT
Current temp
75°F
Unavailable
Live forecast
74°F
Washington, MO
70 mi in
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
18 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
2h 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Gateway Arch National Park
National Park
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...
24 mi from route
~61 min detour
$19
near mile 19.3
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
This route is heavily focused on highway driving, with 89% of the journey taking place on major roads like I 44. You'll experience long stretches of consistent speed, including a significant 93.3-mile segment on I 44. The profile suggests a highway-focused drive, meaning you'll likely encounter fewer complex intersections and more straightforward travel. While I 44 forms the backbone, the inclusion of MO 100 and MO 17 indicates brief transitions onto state highways, which might offer a slight change of scenery before returning to the interstate.
89% highway — fuel and pacing are the main things to plan.
24 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 93.3 mi on I 44.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 44 and MO 100. You will hit about 15 points where you need to pay attention to lane position or signs. The trickiest moment comes around 7 miles in.
Driving Effort5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 139.9 miles you will encounter 15 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
Where does it get tricky?
The main spots that need attention: at 7 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 11 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 19.7 miles: Roundabout - know your exit number before entering.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 54m. Total distance: 139.9 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
2h 54m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (89%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 93.3 miles on I 44. The full list of main roads is in the Roads section above.
Yes, with realistic expectations. Build in a stop roughly every 2 hours, have snacks and activities ready, and check the Nearby Places tabs for kid-friendly stops along the way.
The main spots that need attention: at 7 miles: Lane positioning matters here. Multiple destination signs - pick the right one; at 11 miles: Exit ramp - move to the correct lane early. Lane positioning matters here; at 19.7 miles: Roundabout - know your exit number before entering.
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 Crocker, MO before heading back.
