Saint Clair Rest Area (Westbound)
0.1 mi from route
Trip from O'Fallon, MO to Battlefield, MO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Jul 19, 2026 · Editorial standards
Drive Time
4h 20m
Distance
220.6 mi
355 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$33
one way
EV Charging
Unknown
Best Time to Leave
4 AM
4h 7m
★
6 AM
4h 21m
8 AM
4h 47m
10 AM
4h 30m
12 PM
4h 27m
3 PM
4h 31m
5 PM
4h 46m
8 PM
4h 13m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
O'Fallon, MO
Wikimedia Commons
Battlefield, MO
Wikimedia Commons
Trip Overview
O'Fallon, MO to Battlefield, MO is 220.6 miles and takes about 4h 20m via I 44 and MO 100, with a fuel budget near $34 and enough daylight to finish in a day. This drive takes you across Missouri, staying within the Midwest region for both your departure and arrival points. It's a pretty straightforward trip, predominantly highway driving, making it a solid option if you're looking for a direct route. Plan for this to be a single-day journey, as the duration is well within typical travel limits for one person.
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
110.3 miles from O'Fallon, MO
A natural place for your longest stop of the day , about 2h 15m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 44 | 177.4 mi | 3h 11m |
| MO 100 | 13.3 mi | 18m |
| US 160 | 6.9 mi | 11m |
| MO K | 6.5 mi | 11m |
| MO 109 | 4.7 mi | 7m |
| Avenue of the Saints | 3.7 mi | 4m |
| MO FF | 2.5 mi | 3m |
| North Eatherton Road | 2.4 mi | 4m |
Longest stretch:
I 44
— 177.4 mi, about 3h 11m
Traffic on I-44
Hour-of-day weekday pattern from 8 FHWA count stations on your route.
Peak
4 PM
~1,432 veh/hr typical · worst 1,709
Quietest
2 AM
~177 veh/hr
Peak-to-quiet ratio
8.1×
busier at peak than in the quiet hours
12a
6a
noon
6p
11p
Averaged across 52 weeks of 2023 FHWA Travel Monitoring Analysis System data. Weekday hours only (Mon–Fri).
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Battlefield, 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
·
38 sec
Exit 75
Toward US 160: West Bypass, Willard
22
Turn left onto US 160
6.9 mi
·
11 min
·
US 160
23
Continue on MO FF
2.5 mi
·
3 min
·
MO FF
24
Turn left onto 182
68 ft
·
1 sec
·
West 3rd Street
25
Arrive at destination
182
Trip Plan
Given the 4h 20m estimated drive time and 220.6 miles, this trip is comfortably manageable in a single day. Aim to depart in the morning to maximize daylight and allow for any unexpected delays. The longest stretch without a significant road change is 177.4 miles on I 44, so plan a fuel and stretch break before or during that segment. With a fuel cost estimated at $34, it's a budget-friendly option. Consider a brief stop around the halfway point to break up the drive, rather than trying to push through the entire 177.4-mile interstate segment consecutively.
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 110.3 miles from O'Fallon, MO, or about 2h 15m 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 49 miles or 1h 9m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 110.3 miles or 2h 15m 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 32m
Traffic, exits, and arrival timing usually matter more near Battlefield, 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 220.6 miles and 4h 20m.
Your first comfortable stop window is around 49 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.
Mid-route town
Meal stop
110 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 49 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 110.3 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.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Stops Along Your Drive
Picked by where they fit in your drive — first break, midpoint reset, final stretch.
TA
0.1 mi from route
Flying J Travel Center
0.1 mi from route
Road Ranger
0.1 mi from route
Mr. Fuel
0.1 mi from route
Truck Parking
0.1 mi from route
Truck Parking
0.1 mi from route
Saint Clair Rest Area (Eastbound)
0.1 mi from route
Buc-ee's
0.1 mi from route
ONE9 Travel Center
0.1 mi from route
QuikTrip
0.1 mi from route
Love's Travel Stop
0.2 mi from route
TA
0.2 mi from route
B&D Auto/Truck Plaza
0.2 mi from route
Conway Rest Area (Eastbound)
0.2 mi from route
Conway Rest Area (Westbound)
0.2 mi from route
Love's Travel Stop
0.2 mi from route
Rest Area
0.9 mi from route
Flying J Travel Center
1.8 mi from route
Pilot Travel Center
1.9 mi from route
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 155 decision points cluster between mile 7 and 210.9 — 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
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
Fuel & Cost
Regular Gas
$32.58 one way
$65.16 round trip
$3.75/gal
25.4 MPG avg
77 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.14 | $35.96 | $71.93 |
| premium | $4.72 | $40.96 | $81.92 |
| diesel | $4.80 | $41.65 | $83.31 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$33
Meals
$25–$50
Total
$58–$83
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 77.2 kg one way. Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $23 in charging · 0 stops · 66% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 66.2 | 0 | $23.16 | $10.59 |
| Efficient EV | 55.2 | 0 | $19.30 | $8.82 |
| EV Truck/SUV | 88.2 | 1 | $30.88 | $14.12 |
Gas CO2
77 kg
EV CO2
26 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.
Origin
O'Fallon, MO
Late night in O'Fallon on Sunday
Local time
5:50 AM
CDT
Current temp
91°F
Chance Showers And Thunderstorms
W 7 mph
28% chance
Live forecast
Heat Advisory
Heat Advisory issued July 17 at 12:32PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Heat Advisory
Heat Advisory issued July 17 at 11:01AM CDT until July 21 at 7:00PM CDT by NWS St Louis MO
Destination
Battlefield, MO
Late night in Battlefield on Sunday
Local time
5:50 AM
CDT
Current temp
89°F
Slight Chance Showers And Thunderstorms
SW 6 mph
22% chance
Live forecast
Heat Advisory
Heat Advisory issued July 17 at 12:32PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Heat Advisory
Heat Advisory issued July 17 at 11:01AM CDT until July 21 at 7:00PM CDT by NWS St Louis MO
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
2 degrees cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
4h 20m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Wilson's Creek National Battlefield
National Battlefield
Wilson's Creek was the first major Civil War battle fought west of the Mississippi River, and where the first Union general was killed in action. The costly Southern victory on August 10, 1861, focuse...
2 mi from route
~6 min detour
Free
near mile 220.6
Caution: BE AWARE OF HIGH-WATER DANGER
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...
26 mi from route
~65 min detour
$19
near mile 15.2
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
This drive is heavily focused on highway travel, with 92% of the route utilizing major roadways like I 44 and US 160. You'll experience a long, uninterrupted stretch of 177.4 miles on I 44, which offers a consistent pace. While the majority is highway, there are brief segments on MO 100, offering a slight change of scenery before rejoining faster routes. Expect a generally efficient journey, characteristic of a highway-focused profile, rather than a winding scenic byway.
92% highway — fuel and pacing are the main things to plan.
25 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 177.4 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 Effort
5/10
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 220.6 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.
Elevation Profile
Gently rolling terrain
1,378 ft
530 ft
Total Climb
1,141 ft
Total Descent
415 ft
Highest Point
1,378 ft
~173.3 mi in
Elevation Range
848 ft
About the Cities
Starting in O'Fallon, MO
Full guide →Founded 1856
St. Charles, Missouri is outside of St. Louis on the bank of the Missouri River. It was Missouri's first state capital and was one of the first stops by Lewis and Clark on their journey to explore Louisiana Territory. The historic Main Street has largely been restored to its 1812-era appearance including gas lights a boardwalk and is lined with shops selling artwork, handicrafts, home decorations, antiques. There are also many restaurants.
Arriving in Battlefield, MO
Full guide →City content from Wikivoyage (CC BY-SA 4.0) and Wikidata (CC0).
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 4h 20m. Total distance: 220.6 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 20m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (92%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 177.4 miles on I 44. The full list of main roads is in the Roads section above.
Yes — we found about 20 rest areas or service plazas within a short detour of the route (from OpenStreetMap). See the Rest Stops tab under Nearby Places for locations and mile markers. Plan to stretch, use the bathroom, and top off fluids every 2–3 hours on longer drives.
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 — Wilson's Creek National Battlefield and Gateway Arch National Park. See the National Parks section for detour distances and tips on detours.
Possible but tiring. At 4.3 hours each way, an in-and-out day trip would put you behind the wheel for 8.7 hours — manageable with a long break at Battlefield, MO, but most travelers stay overnight.
How this page is built
Compiled by the US Trip Planner planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, USGS 3DEP for elevation, NPS for national parks, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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