Origin
Hazelwood, MO
Morning in Hazelwood on Saturday
Local time
7:51 AM
CDT
Current temp
58°F
Unavailable
Live forecast
Trip from Hazelwood, MO to O'Fallon, MO
Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
29m
Distance
20.1 mi
32 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$3
one way
EV Charging
Good
6 stations
Best Time to Leave
4 AM
0h 27m
★
6 AM
0h 29m
8 AM
0h 34m
10 AM
0h 31m
12 PM
0h 30m
3 PM
0h 31m
5 PM
0h 34m
8 PM
0h 28m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Hazelwood, MO
Valeria Boltneva
O'Fallon, MO
Wikimedia Commons
Trip Overview
Hazelwood, MO to O'Fallon, MO is 20.1 miles and takes about 29m via I 70, with a fuel budget near $3 and enough daylight to finish in a day. This short trip stays within the Midwest region, making it a simple transition between two Missouri locations. It’s a straightforward drive, primarily on major roadways, ideal for a quick commute or a brief excursion. Given its brevity, it’s perfectly suited for a same-day trip, allowing ample time for activities at your destination. Consider this route when you need to cover a short distance efficiently without venturing far from familiar territory.
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 29m. Total distance: 20.1 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
29m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (67%). Some complex stretches to watch for.
Drive Character
This drive leans heavily towards highway travel, with 67% of the route utilizing major highways like I 70. You'll experience a consistent pace for much of the journey, including a longest stretch of 13.6 miles on I 70. The Rosemary Straub Davison Highway and East Terra Lane offer brief diversions from the interstate, but the overall character remains focused on efficient transit. Expect a smooth, relatively fast-paced experience, characteristic of a highway-focused profile.
Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 16 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 13.6 miles.
How Hard Is This Drive?
This is a straightforward highway drive that stays mostly on I 70 and Rosemary Straub Davison Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 0.2 miles in near Fee Fee Road.
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 20.1 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 29m.
Where does it get tricky?
The main spots that need attention: at 0.2 miles (Fee Fee Road): Complex interchange - multiple decisions in a short stretch; at 0.5 miles (James S McDonnell Boulevard): Lane positioning matters here; at 3.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Critical Maneuvers
5 of 12 key pointsThese are the spots where you need to pay the most attention. Preview them before you drive.
6
0.2 mi into trip
|
~0m in
|
Fee Fee Road
At end of road, turn left onto Fee Fee Road
Complex interchange - multiple decisions in a short stretch
5
0.5 mi into trip
|
~2m in
|
James S McDonnell Boulevard
Turn right onto James S McDonnell Boulevard
Lane positioning matters here
Use the right lane.
6
3.9 mi into trip
|
~6m in
Take the exit toward I 70: Saint Louis, Kansas City
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 20A
Toward I 70: Saint Louis, Kansas City
8
4.6 mi into trip
|
~8m in
Keep slight right at fork toward I 70 West: Kansas City
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Exit 20B
Toward I 70 West: Kansas City
8
18.6 mi into trip
|
~25m 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
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Hazelwood, MO and O'Fallon, MO, road signs point toward Kansas City and Mo K: O'fallon.
Kansas City
3.9 mi in
|
~6m
Mo K: O'fallon
18.6 mi in
|
~25m
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 13.6 mi | 16m |
| Rosemary Straub Davison Highway | 2.1 mi | 2m |
| East Terra Lane | 0.9 mi | 1m |
| McDonnell Boulevard | 0.6 mi | <1m |
| South Main Street | 0.5 mi | 1m |
| James S McDonnell Boulevard | 0.3 mi | <1m |
| Fee Fee Road | 0.3 mi | 1m |
| Chapel Ridge Drive | 0.2 mi | <1m |
Longest stretch:
I 70
— 13.6 mi, about 16m
Turn-by-Turn Driving Directions
Step-by-step road directions between Hazelwood, MO and O'Fallon, MO.
1
Start on Chapel Ridge Drive
0.2 mi
·
56 sec
·
Chapel Ridge Drive
2
At end of road, turn left onto Fee Fee Road
0.3 mi
·
1 min
·
Fee Fee Road
3
Turn slight right
147 ft
·
5 sec
4
Turn right onto James S McDonnell Boulevard
0.3 mi
·
27 sec
·
James S McDonnell Boulevard
Use the right lane.
5
Continue on McDonnell Boulevard
0.6 mi
·
59 sec
·
McDonnell Boulevard
6
Take the ramp
0.4 mi
·
53 sec
Toward I 270 West: Kansas City
Use the left lane.
7
Merge onto I 270
2.1 mi
·
2 min
·
Rosemary Straub Davison Highway
Use the straight / slight right lanes.
8
Take the exit
0.3 mi
·
25 sec
Exit 20A
Toward I 70: Saint Louis, Kansas City
9
Continue on this road
0.5 mi
·
42 sec
·
this road
Exit 20A-B
Toward I 70: Saint Louis, Kansas City
Use the slight left / slight right lanes.
10
Keep slight right at fork
0.5 mi
·
41 sec
Exit 20B
Toward I 70 West: Kansas City
Use the slight right lane.
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
Fuel & Cost
Regular Gas
$3.14 one way
$6.28 round trip
$3.97/gal
25.4 MPG avg
7 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $3.45 | $6.90 |
| premium | $4.89 | $3.87 | $7.74 |
| diesel | $5.61 | $4.44 | $8.88 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$3
Estimated CO2 emission: 7 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 71% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 6 | 0 | $2.11 | $0.96 |
| Efficient EV | 5 | 0 | $1.76 | $0.80 |
| EV Truck/SUV | 8 | 0 | $2.81 | $1.29 |
Gas CO2
7 kg
EV CO2
2 kg (71% 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
Morning in O'Fallon on Saturday
Local time
7:51 AM
CDT
Current temp
57°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 cooler at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
29m 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 Hazelwood, MO to O'Fallon, MO covers 20.1 miles and takes about 29m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, Rosemary Straub Davison Highway, East Terra Lane. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 10.1 miles from Hazelwood, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $3.14 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 12 decision points packed into just 20.1 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 29m.
The main spots that need attention: at 0.2 miles (Fee Fee Road): Complex interchange - multiple decisions in a short stretch; at 0.5 miles (James S McDonnell Boulevard): Lane positioning matters here; at 3.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
Between Hazelwood, MO and O'Fallon, MO, road signs point toward Kansas City and Mo K: O'fallon.
Yes. Nearby national parks include Gateway Arch National Park.
How this page is built
Compiled by the Trip.ovh planning team at COD Solutions Oy from open government datasets — OSRM over OpenStreetMap for geometry, EIA for fuel prices, and NPS for national parks. See our methodology for refresh cadence and limitations.
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