Origin
O'Fallon, MO
Evening in O'Fallon on Thursday
Local time
7:04 PM
CDT
Current temp
57°F
Unavailable
Live forecast
Trip from O'Fallon, MO to Marlborough, MO
Last recalculated Apr 17, 2026
Drive Time
48m
Distance
34 mi
55 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$5
one way
EV Charging
Unknown
Best Time to Leave
4 AM
0h 44m
★
6 AM
0h 48m
8 AM
0h 56m
10 AM
0h 51m
12 PM
0h 50m
3 PM
0h 52m
5 PM
0h 56m
8 PM
0h 46m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
O'Fallon, MO
Wikimedia Commons
Marlborough, MO
Valeria Boltneva
Trip Overview
The drive from O'Fallon, MO to Marlborough, MO covers 34 miles and takes about 48m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 70, Inner Belt Expressway, Laclede Station Road for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 19.8 miles on I 70. At current regular gas prices, budget about $5.32 one way before food or hotel costs.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 48m. Total distance: 34 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
48m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (82%). Some complex stretches to watch for.
Drive Character
This is a 48m highway drive covering 34 miles, with most of the trip on I 70 and Inner Belt Expressway. The longest continuous stretch is about 19.8 miles on I 70.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 18 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 19.8 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 and Inner Belt Expressway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.6 miles in near Drennen Parkway.
Driving Effort
9/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 13 decision points packed into just 34 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 48m.
Where does it get tricky?
The main spots that need attention: at 0.6 miles (Drennen Parkway): Lane positioning matters here; at 1.5 miles: Lane positioning matters here; at 21.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
Critical Maneuvers
5 of 13 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
5
0.6 mi into trip
|
~1m in
|
Drennen Parkway
Turn left onto Drennen Parkway
Lane positioning matters here
Use the left lane.
5
1.5 mi into trip
|
~3m in
Take the ramp toward I 70 East: Saint Louis
Lane positioning matters here
Use the slight left lane.
Toward I 70 East: Saint Louis
7
21.4 mi into trip
|
~28m in
Take the exit toward I 170 South: Clayton
Exit ramp - move to the correct lane early. Lane positioning matters here
Use the slight right lane.
Exit 238A
Toward I 170 South: Clayton
8
28.9 mi into trip
|
~37m in
Take the exit toward Brentwood Boulevard North, Eager Road
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight / slight right lanes.
Exit 1C
Toward Brentwood Boulevard North, Eager Road
6
29 mi into trip
|
~37m in
Keep slight left at fork toward Eager Road
Highway fork - watch signs carefully
Toward Eager Road
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
On the drive from O'Fallon, MO to Marlborough, MO, road signs begin pointing toward Brentwood Boulevard North along the way.
Brentwood Boulevard North
28.9 mi in
|
~37m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 19.8 mi | 24m |
| Inner Belt Expressway | 7.1 mi | 8m |
| Laclede Station Road | 2.5 mi | 4m |
| South Hanley Road | 1.6 mi | 3m |
| Drennen Parkway | 0.9 mi | 1m |
| South Main Street | 0.6 mi | 1m |
| Eager Road | 0.4 mi | <1m |
| Wimbledon Drive | 0.2 mi | <1m |
Longest stretch:
I 70
— 19.8 mi, about 24m
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Marlborough, MO.
1
Start on this road
25 ft
·
7 sec
·
this road
2
Turn left onto South Main Street
0.6 mi
·
1 min
·
South Main Street
3
Turn left onto Drennen Parkway
0.9 mi
·
1 min
·
Drennen Parkway
Use the left lane.
4
Take the ramp
438 ft
·
6 sec
Toward I 70 East: Saint Louis
Use the slight left lane.
5
Merge onto I 70
20 mi
·
24 min
·
I 70
Use the straight / slight right lanes.
6
Take the exit
0.4 mi
·
40 sec
Exit 238A
Toward I 170 South: Clayton
Use the slight right lane.
7
Merge onto I 170
7.1 mi
·
8 min
·
Inner Belt Expressway
8
Take the exit
0.2 mi
·
21 sec
Exit 1C
Toward Brentwood Boulevard North, Eager Road
Use the straight / slight right lanes.
9
Keep slight left at fork
512 ft
·
10 sec
Toward Eager Road
10
Continue on this road
0.1 mi
·
14 sec
·
this road
Exit 1C
Toward Eager Road
11
Turn left onto Eager Road
0.4 mi
·
49 sec
·
Eager Road
Use the left / straight lanes.
12
Turn slight right
512 ft
·
18 sec
13
Keep slight left at fork
137 ft
·
5 sec
14
Turn right onto South Hanley Road
1.6 mi
·
3 min
·
South Hanley Road
15
Continue on Laclede Station Road
2.5 mi
·
4 min
·
Laclede Station Road
16
Turn left onto Wimbledon Drive
0.2 mi
·
40 sec
·
Wimbledon Drive
17
Turn right onto MO 366
149 ft
·
3 sec
·
Watson Road
18
Arrive at destination
MO 366
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Halfway Point
Midpoint
About 17 mi from O'Fallon, MO · 22m into the drive
Mid-route town
Meal stop
17 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 34 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 17 miles from O'Fallon, MO, which is a good place for a longer meal and fuel stop.
Arriving in Marlborough, MO
Allow a few extra minutes for the final approach into Marlborough, MO if you are unfamiliar with the area.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Fuel & Cost
Regular Gas
$5.32 one way
$10.63 round trip
$3.97/gal
25.4 MPG avg
12 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $5.84 | $11.67 |
| premium | $4.89 | $6.54 | $13.09 |
| diesel | $5.61 | $7.51 | $15.01 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$5
Estimated CO2 emission: 11.9 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $4 in charging · 0 stops · 67% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 10.2 | 0 | $3.57 | $1.63 |
| Efficient EV | 8.5 | 0 | $2.97 | $1.36 |
| EV Truck/SUV | 13.6 | 0 | $4.76 | $2.18 |
Gas CO2
12 kg
EV CO2
4 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.
Destination
Marlborough, MO
Evening in Marlborough on Thursday
Local time
7:04 PM
CDT
Current temp
58°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
1 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
48m 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.
Frequently Asked Questions
The drive from O'Fallon, MO to Marlborough, MO covers 34 miles and takes about 48m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, Inner Belt Expressway, Laclede Station Road. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 17 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 $5.32 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a short but busy drive. With 13 decision points packed into just 34 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 48m.
The main spots that need attention: at 0.6 miles (Drennen Parkway): Lane positioning matters here; at 1.5 miles: Lane positioning matters here; at 21.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here.
On the drive from O'Fallon, MO to Marlborough, MO, road signs begin pointing toward Brentwood Boulevard North along the way.
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