Drive Time
4h 26m
Distance
227 mi
365 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$34
one way
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 South Main Street, I 64 East, Avenue of the Saints for much of the mileage, and the overall profile is turn-heavy local drive. 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 13m into the drive .
Expect a 4h 26m drive with frequent turns across 227 miles of local and secondary roads.
Expect a hands-on drive with frequent turns and local roads rather than long highway stretches. There are only a few real navigation decisions along the way.
Easy - simple navigation with a manageable amount of wheel time
This is a straightforward 4h 26m drive. You will face about 0 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
This route does not have any notably tricky sections. Most of the drive from O'Fallon, MO to Ash Grove, MO is straightforward, with well-signed roads and simple exits.
| Road | Distance | Duration |
|---|---|---|
| South Main Street | Unavailable | Refreshing |
| I 64 East | Unavailable | Refreshing |
| Avenue of the Saints | Unavailable | Refreshing |
| Chesterfield Airport Road | Unavailable | Refreshing |
| Olive Street Road | Unavailable | Refreshing |
| North Eatherton Road | Unavailable | Refreshing |
| the route | Unavailable | Refreshing |
| MO 100 West | Unavailable | Refreshing |
Per-road distance and duration are being refreshed from OSRM for this route.
Step-by-step road directions between O'Fallon, MO and Ash Grove, MO.
Start on the route
Turn left onto South Main Street
Continue straight
Continue straight
Take the ramp slight right toward I 64 East, US 40 East, US 61 South
Merge slight left onto Avenue of the Saints
Take the exit slight right toward Chesterfield Airport Road
Continue on Chesterfield Airport Road
Turn right onto Olive Street Road
Turn right onto Olive Street Road
Continue on North Eatherton Road
Enter the roundabout and take exit 2 toward the route
Exit the roundabout
Enter the roundabout and take exit 2 toward the route
Exit the roundabout
Enter the roundabout and take exit 2 toward MO 100 West: Gray Summit
Exit the roundabout onto MO 100 West: Gray Summit
Merge slight left
Take the exit slight right toward I 44 West, US 50 West: St. Clair
Merge slight left
Take the exit slight right toward US 160: West Bypass, Willard
Turn right
Enter the roundabout and take exit 2 toward the route
Exit the roundabout
Enter the roundabout and take exit 2 toward the route
Exit the roundabout
Enter the roundabout and take exit 2 toward Olympian Boulevard
Exit the roundabout onto Olympian Boulevard
Turn left onto Calhoun Avenue
Turn right onto West Main Street
Arrive at your destination
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.
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 34m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 113.5 miles or 2h 13m 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 38m
Traffic, exits, and arrival timing usually matter more near Ash Grove, MO than in the middle of the route.
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.
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 113.5 mi from O'Fallon, MO · 2h 13m 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.
A short stop after about 80 miles helps settle the day before fatigue starts building.
The midpoint is around 113.5 miles from O'Fallon, MO, which is a good place for a longer meal and fuel stop.
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.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Regular Gas
$34.48 one way
$68.96 round trip
| 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. If you're planning ahead, check the forecast closer to your travel date.
Origin
Afternoon in O'Fallon on Saturday
Local time
2:52 PM
CDT
Current temp
53°F
Forecast unavailable right now
Destination
Afternoon in Ash Grove on Saturday
Local time
2:52 PM
CDT
Current temp
79°F
Forecast unavailable right now
Along the Route
59°F
Cahokia, IL
114 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
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
An early start around 7-8 AM gets you there with plenty of daylight left.
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