Origin
Green Park, MO
Evening in Green Park on Wednesday
Local time
6:51 PM
CDT
Current temp
75°F
Unavailable
Live forecast
Trip from Green Park, MO to O'Fallon, MO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Sep 2, 2026 · Editorial standards
Drive Time
49m
Distance
36 mi
58 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$6
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 45m
★
6 AM
0h 49m
8 AM
0h 58m
10 AM
0h 52m
12 PM
0h 51m
3 PM
0h 53m
5 PM
0h 57m
8 PM
0h 47m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Green Park, MO
Yunus Tuğ
O'Fallon, MO
Wikimedia Commons
Trip Overview
Green Park, MO to O'Fallon, MO is 36 miles and takes about 49m via Antigo Drive, Mueller Road, and South Lindbergh Boulevard, with a fuel budget near $6 and enough daylight to finish in a day. This short trip stays within Missouri, taking you from one Midwest locale to another. Given the brief duration, this route is ideal for a spontaneous day trip or a quick transit between these two areas. You'll navigate primarily on surface roads, making it a straightforward drive.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 270 | 16.6 mi | 20m |
| I 70 | 13.6 mi | 16m |
| Tesson Ferry Road | 1.1 mi | 2m |
| East Terra Lane | 0.9 mi | 1m |
| South Main Street | 0.5 mi | 1m |
| South Lindbergh Boulevard | 0.4 mi | <1m |
| Antigo Drive | 0.3 mi | 1m |
| Mueller Road | 0.3 mi | <1m |
Longest stretch:
I 270
— 16.6 mi, about 20m
Traffic on I-70
Hour-of-day weekday pattern from 22 FHWA count stations on your route.
Peak
4 PM
~6,486 veh/hr typical
Quietest
2 AM
~540 veh/hr
Peak-to-quiet ratio
12×
busier at peak than in the quiet hours
12a
6a
noon
6p
11p
Averaged across 105 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 Green Park, MO and O'Fallon, MO.
1
Start on Arnett Drive
302 ft
·
14 sec
·
Arnett Drive
2
Turn right onto Antigo Drive
0.3 mi
·
1 min
·
Antigo Drive
3
Turn left onto Mueller Road
0.3 mi
·
50 sec
·
Mueller Road
4
Turn right onto US 50; US 61; US 67
0.4 mi
·
56 sec
·
South Lindbergh Boulevard
5
Turn left onto MO 21
1.1 mi
·
2 min
·
Tesson Ferry Road
6
Take the ramp
0.3 mi
·
20 sec
Toward I 270 North
7
Merge onto I 270
17 mi
·
20 min
·
I 270
Use the straight lane.
8
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.
9
Keep slight left at fork
0.1 mi
·
11 sec
Toward I 70 West: Kansas City
Use the slight left lane.
10
Continue on this road
0.6 mi
·
57 sec
·
this road
Exit 20B
Toward I 70 West: Kansas City
11
Merge onto I 70
14 mi
·
16 min
·
I 70
Use the straight / slight right lanes.
12
Take the exit
390 ft
·
8 sec
Exit 218
Toward MO K: O'Fallon, Main Street
Use the slight right lane.
13
Turn straight onto East Terra Lane
0.9 mi
·
1 min
·
East Terra Lane
Use the straight lane.
14
Turn right onto South Main Street
0.5 mi
·
1 min
·
South Main Street
15
Turn right
25 ft
·
1 sec
16
Arrive at destination
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
18 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 36 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 18 miles from Green Park, MO, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 125 decision points cluster between mile 2.5 and 34.5 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
2.5 mi into trip
|
~6m in
|
I 270
Merge onto I 270
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
8
19.2 mi into trip
|
~26m 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...
7
20.2 mi into trip
|
~28m in
Keep slight left at fork toward I 70 West: Kansas City
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 70 West: Kansas City
5
21 mi into trip
|
~29m in
|
I 70
Merge onto I 70
Merge point - match speed before joining. Lane positioning matters here
Use the straight / slight right lanes.
8
34.5 mi into trip
|
~46m 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
Fuel & Cost
Regular Gas
$5.58 one way
$11.16 round trip
$3.94/gal
25.4 MPG avg
13 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.32 | $6.12 | $12.24 |
| premium | $4.93 | $6.98 | $13.97 |
| diesel | $5.60 | $7.94 | $15.87 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$6
Estimated CO2 emission: 12.6 kg one way. Prices: EIA weekly data, 2026-08-31.
Driving Electric?
About $4 in charging · 0 stops · 69% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 10.8 | 0 | $3.78 | $1.73 |
| Efficient EV | 9 | 0 | $3.15 | $1.44 |
| EV Truck/SUV | 14.4 | 0 | $5.04 | $2.30 |
Gas CO2
13 kg
EV CO2
4 kg (69% 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
Evening in O'Fallon on Wednesday
Local time
6:51 PM
CDT
Current temp
75°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
Very similar conditions
Both ends of the route are sitting at about the same temperature right now.
Road read
49m 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.
What kind of drive is this?
This drive is entirely on surface roads, with 0% highway share. You'll be on local streets like Antigo Drive, Mueller Road, and South Lindbergh Boulevard for the entire 36 miles. Expect a consistent pace without the interruptions of highway exits. The drive is about 49 minutes long, offering a continuous surface road experience.
84% highway — fuel and pacing are the main things to plan.
16 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 16.6 mi on I 270.
How Hard Is This Drive?
8/10
This is a straightforward highway drive that stays mostly on I 270 and I 70. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 2.5 miles in near I 270.
Driving Effort
8/10
Focused - busy navigation packed into a short drive
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 12 decision points packed into just 36 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 49m.
Where does it get tricky?
The main spots that need attention: at 2.5 miles (I 270): Merge point - match speed before joining. Lane positioning matters here; at 19.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 20.2 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Green Park, MO and O'Fallon, MO, road signs point toward Saint Louis and Saint Louis Lambert International Airport.
Saint Louis
19.2 mi in
|
~26m
Saint Louis Lambert International Airport
19.2 mi in
|
~26m
About the Cities
Starting in Green Park, MO
Full guide →Arriving 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.
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 49m. Total distance: 36 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
49m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (84%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 16.6 miles on I 270. The full list of main roads is in the Roads section above.
It helps. This route has a higher-than-average number of complex decision points, which get harder in the dark. If the last hour of the trip is on surface roads or mountain grades, aim to arrive at O'Fallon, MO before sunset when you can. Check the Trip Plan for departure windows that land you in daylight.
Yes. At under 2 hours behind the wheel, this works well for families — plan one quick stop if you have younger kids.
The main spots that need attention: at 2.5 miles (I 270): Merge point - match speed before joining. Lane positioning matters here; at 19.2 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 20.2 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at O'Fallon, MO before heading back.
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, and FHWA TMAS for hourly traffic volumes. See our methodology for refresh cadence and limitations.
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