Origin
O'Fallon, MO
Afternoon in O'Fallon on Sunday
Local time
2:32 PM
CDT
Current temp
53°F
Unavailable
Live forecast
Trip from O'Fallon, MO to Ash Grove, MO
Drive Time
4h 26m
Distance
227 mi
365 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$34
one way
O'Fallon, MO
Valeria Boltneva
Ash Grove, MO
life vibes
Trip Overview
The drive from O'Fallon, MO to Ash Grove, MO covers 227 miles and takes about 4h 26m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 44, MO 100, Olympian Boulevard for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 177.4 miles on I 44. At current regular gas prices, budget about $34.48 one way before food or hotel costs.
Trip Pace
Same-day drive is realistic
A same-day return is possible, but it will make for a full day on the road.
Break Rhythm
1 planned break
Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
Midpoint
113.5 miles from O'Fallon, MO
A natural place for your longest stop of the day , about 2h 19m into the drive .
Drive Character
This is a 4h 26m highway drive covering 227 miles, with most of the trip on I 44 and MO 100. The longest continuous stretch is about 177.4 miles on I 44.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 31 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 44 is the longest continuous segment at about 177.4 miles.
Elevation Profile
Mostly flat terrain
1,098 ft
546 ft
Total Climb
551 ft
Total Descent
0 ft
Highest Point
1,098 ft
~85.1 mi in
Elevation Range
551 ft
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 44 and MO 100. You will hit about 19 points where you need to pay attention to lane position or signs. The trickiest moment comes around 7 miles in.
Route Complexity
5/10
Moderate - straightforward overall, but long enough or busy enough to require pacing
This drive requires moderate attention. Across 227 miles you will encounter 19 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.
Critical Maneuvers
5 of 19 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
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
6
210.9 mi into trip
|
~4h 4m in
Take the exit toward US 160: West Bypass, Willard
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 75
Toward US 160: West Bypass, Willard
Towns Along This Route
On the drive from O'Fallon, MO to Ash Grove, MO, road signs begin pointing toward Willard along the way.
Willard
210.9 mi in
|
~4h 4m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 44 | 177.4 mi | 3h 11m |
| MO 100 | 13.3 mi | 18m |
| Olympian Boulevard | 10.2 mi | 13m |
| MO K | 6.5 mi | 11m |
| US 160 | 5.4 mi | 7m |
| MO 109 | 4.7 mi | 7m |
| Avenue of the Saints | 3.7 mi | 4m |
| North Eatherton Road | 2.4 mi | 4m |
Longest stretch:
I 44
— 177.4 mi, about 3h 11m
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Ash Grove, 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 South
Use 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 14
Toward Chesterfield Airport Road
Use 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
177 mi
·
3 hr 11 min
·
I 44; US 50
Use the straight lane.
21
Take the exit
0.3 mi
·
33 sec
Exit 75
Toward US 160: West Bypass, Willard
22
Turn right onto US 160
3.5 mi
·
4 min
·
US 160
23
Enter roundabout onto US 160
133 ft
·
5 sec
·
US 160
24
Continue on US 160
1.3 mi
·
1 min
·
US 160
25
Enter roundabout onto US 160
135 ft
·
4 sec
·
US 160
26
Continue on US 160
0.6 mi
·
54 sec
·
US 160
27
Enter roundabout onto US 160
130 ft
·
4 sec
·
Olympian Boulevard
28
Continue on US 160
10 mi
·
13 min
·
Olympian Boulevard
29
Turn left onto MO F
0.2 mi
·
31 sec
·
Calhoun Avenue
30
Turn right onto West Main Street
100 ft
·
4 sec
·
West Main Street
31
Arrive at destination
West Main Street
Trip Plan
Morning Departure
An early start around 7-8 AM gets you there with plenty of daylight left.
Evening Departure
A late afternoon start means arriving after dark. Morning is better.
You can normally do this drive in one day.
Plan roughly 1 meaningful break for fuel, food, and rest.
The halfway point lands around 113.5 miles from O'Fallon, MO, or about 2h 19m into the drive.
The longest continuous stretch on this route runs about 177.4 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 80 miles or 1h 43m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 113.5 miles or 2h 19m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 3h 37m
Traffic, exits, and arrival timing usually matter more near Ash Grove, 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 227 miles and 4h 26m.
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.
Plan about 1 real break rather than only quick fuel stops.
The longest stretch is on I 44 for about 177.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 113.5 mi from O'Fallon, MO · 2h 19m into the drive
Mid-route town
Meal stop
114 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 80 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 113.5 miles from O'Fallon, MO, which is a good place for a longer meal and fuel stop.
Before the longest stretch
Fuel checkTop up before I 44 if your tank is already low. That segment runs about 177.4 miles.
Arriving in Ash Grove, MO
The final approach into Ash Grove, 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 Ash Grove, MO.
After long uninterrupted mileage, take five minutes before the last urban segment to reset and refocus on exits, merges, and city traffic.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$34.48 one way
$68.96 round trip
$3.86/gal
25.4 MPG avg
79 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.25 | $38.01 | $76.02 |
| premium | $4.80 | $42.85 | $85.71 |
| diesel | $5.64 | $50.43 | $100.86 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$34
Meals
$25–$50
Total
$59–$84
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 79.4 kg one way. Prices: EIA weekly data, 2026-04-06.
Driving Electric?
About $24 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 68.1 | 0 | $23.83 | $10.90 |
| Efficient EV | 56.8 | 0 | $19.86 | $9.08 |
| EV Truck/SUV | 90.8 | 1 | $31.78 | $14.53 |
Gas CO2
79 kg
EV CO2
27 kg (66% less)
Plan for 0 charging stops, roughly every 270 miles. Allow 25-40 minutes per stop at a DC fast charger.
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
Ash Grove, MO
Afternoon in Ash Grove on Sunday
Local time
2:32 PM
CDT
Current temp
79°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
26 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
4h 26m on the road
An early start around 7-8 AM gets you there with plenty of daylight left.
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 Ash Grove, MO covers 227 miles and takes about 4h 26m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 44, MO 100, Olympian Boulevard. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 113.5 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 $34.48 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
An early start around 7-8 AM gets you there with plenty of daylight left. A late afternoon start means arriving after dark. Morning is better.
Plan about 1 meaningful break for fuel, food, or rest. Plan on a short reset every 3 to 4 hours to stay fresh behind the wheel.
This drive requires moderate attention. Across 227 miles you will encounter 19 spots where lane choice or exit timing matters. Not difficult for experienced highway drivers, but worth previewing the tricky sections before you go.
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.
On the drive from O'Fallon, MO to Ash Grove, MO, road signs begin pointing toward Willard along the way.
Mostly flat terrain. The route ranges from 546 ft to 1,098 ft elevation with about 551 ft of total climbing.
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