This 100.9-mile journey from O'Fallon, MO to Jefferson City, MO is easily manageable as a single-day trip, taking approximately 1 hour and 58 minutes. The drive is primarily highway-focused, with 98% of the route utilizing major roads like I-70 and US-54. You'll navigate through the Midwest region, staying within Missouri for the entire trip. With an estimated fuel cost of $15, this is an economical option for a quick excursion. Given its short duration and minimal stops, it's perfect for a spontaneous outing or a focused drive to your destination.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
50.5 miles from O'Fallon, MO
A natural place for your longest stop of the day
, about 59m into the drive
.
Main Roads
Road
Distance
Duration
I 70
69.4 mi
1h 20m
US 54
29.5 mi
32m
South Main Street
0.6 mi
1m
West Main Street
0.6 mi
1m
West High Street
0.2 mi
<1m
West Terra Lane
0.1 mi
<1m
Broadway Street
<0.1 mi
<1m
East Wall Way
<0.1 mi
—
Some road-level metrics are being recalculated.
Longest stretch:
I 70
— 69.4 mi, about 1h 20m
Turn-by-Turn Driving Directions
Step-by-step road directions between O'Fallon, MO and Jefferson City, 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
34 ft·6 sec
Toward I 70 EastUse the left lane.
4
Turn sharp left onto South Main Street
284 ft·11 sec·South Main Street
5
Turn left onto West Terra Lane
0.1 mi·12 sec·West Terra Lane
Use the left lane.
6
Take the ramp
479 ft·6 sec
Toward I 70 West
7
Merge onto I 70
69 mi·1 hr 20 min·I 70
Use the straight / slight right lanes.
8
Take the exit
0.2 mi·27 sec
Exit 148Toward US 54: Auxvasse, Mexico, Fulton
9
Turn left onto US 54
30 mi·32 min·US 54
10
Take the exit
388 ft·18 sec
Toward State Capitol
11
Turn left onto West Main Street
0.6 mi·1 min·West Main Street
12
Turn right onto Broadway Street
446 ft·26 sec·Broadway Street
13
Turn left onto West High Street
0.2 mi·38 sec·West High Street
14
Turn right
254 ft·25 sec
15
At end of road, turn left onto East Wall Way
6 ft·0 sec·East Wall Way
16
Arrive at destination
East Wall Way
Trip Plan
Planning this 1.98-hour drive is straightforward. Leaving O'Fallon in the morning will allow you to reach Jefferson City with ample time to spare, and there's no need to split this short distance. Since the route is largely on I-70 and US-54, keeping an eye on your fuel gauge is wise, especially during the longest 69.4-mile stretch on I-70. While there are no designated stops in the data, you can easily pull off at any service area along I-70 for a quick break if needed. The $15 fuel cost suggests you won't need frequent refueling.
Morning Departure
Leave by 9 AM and you'll arrive before lunch.
Evening Departure
Even a 4 PM departure gets you there before dark in summer.
You can normally do this drive in one day.
You may only need one short stretch break if traffic stays light.
The halfway point lands around 50.5 miles from O'Fallon, MO, or about 59m into the drive.
The longest continuous stretch on this route runs about 69.4 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 22 miles or 26m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 50.5 miles or 59m in
This is the best place for your longest stop, a real meal, and a full fuel check.
Final approach
Final hour starts around 1h 36m
Traffic, exits, and arrival timing usually matter more near Jefferson City, 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.
Day 1
Settle into the route from O'Fallon, MO
This is one driving day of about 100.9 miles and 1h 58m.
Your first comfortable stop window is around 22 miles from O'Fallon, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 70 for about 69.4 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Place data sourced from public business listings. Hours and availability may vary.
Heads-up: tricky spots
5 of 13
5 decision points cluster between mile 0.6 and 100.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
6
0.6 mi into trip|~1m in
Turn left toward I 70 East
Lane positioning matters here
Use the left lane.
Toward I 70 East
6
0.6 mi into trip|~1m in|South Main Street
Turn sharp left onto South Main Street
Sharp turn - reduce speed on approach
6
0.7 mi into trip|~2m in|West Terra Lane
Turn left onto West Terra Lane
Lane positioning matters here
Use the left lane.
6
70.2 mi into trip|~1h 22m in
Take the exit toward US 54: Auxvasse, Mexico, Fulton
Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one
Exit 148
Toward US 54: Auxvasse, Mexico, Fulton
6
100.9 mi into trip|~1h 58m in|East Wall Way
At end of road, turn left onto East Wall Way
Complex interchange - multiple decisions in a short stretch
Fuel & Cost
Regular Gas
$15.77 one way
$31.55 round trip
$3.97/gal25.4 MPG avg35 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$17.32
$34.64
premium
$4.89
$19.42
$38.83
diesel
$5.61
$22.28
$44.55
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$16
Meals
$25–$50
Total
$41–$66
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 35.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $11 in charging
· 0 stops
· 66% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
30.3
0
$10.59
$4.84
Efficient EV
25.2
0
$8.83
$4.04
EV Truck/SUV
40.4
0
$14.13
$6.46
Gas CO2
35 kg
EV CO2
12 kg (66% 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.
Forecast as of Apr 13, 2026
Origin
O'Fallon, MO
Late night
in O'Fallon on Tuesday
Local time
4:21 AM
CDT
Current temp
71°F
Unavailable
Live forecast
Destination
Jefferson City, MO
Late night
in Jefferson City on Tuesday
Local time
4:21 AM
CDT
Current temp
64°F
Mostly Cloudy
S 9 mph6% chanceLive forecast
Flood Warning
Flood Warning issued April 12 at 9:46PM CDT until April 18 at 1:00PM CDT by NWS St Louis MO
Flood Warning
Flood Warning issued April 12 at 9:46PM CDT until April 20 at 7:00AM 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
7 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
1h 58m on the road
The weather snapshot is not static. If you are leaving later, give both cities one more quick forecast check before departure.
Weather data from the National Weather Service. Conditions may change; check closer to your travel date.
More Details
What kind of drive is this?
Expect a predominantly highway-focused experience on this route, with nearly all of your 100.9 miles spent on interstates and major U.S. highways. The longest uninterrupted stretch is a significant 69.4 miles on I-70, offering a consistent pace. You'll transition from I-70 to US-54, eventually reaching South Main Street in Jefferson City. This drive offers a straightforward, efficient progression, with the majority of your travel time dedicated to covering distance smoothly.
98% 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: 69.4 mi on I 70.
How Hard Is This Drive?
4/10
This is a straightforward highway drive that stays mostly on I 70 and US 54. There are only a few real navigation decisions along the way. The trickiest moment comes around 0.6 miles in.
Driving Effort4/10
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 1h 58m drive. You will face about 13 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 0.6 miles: Lane positioning matters here; at 0.6 miles (South Main Street): Sharp turn - reduce speed on approach; at 0.7 miles (West Terra Lane): Lane positioning matters here.
Elevation Profile
Mostly flat terrain
895 ft546 ft
Total Climb
826 ft
Total Descent
740 ft
Highest Point
895 ft
~36 mi in
Elevation Range
349 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between O'Fallon, MO and Jefferson City, MO, road signs point toward Mexico and Fulton.
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.
The longest stretch is about 69.4 miles on I 70. The full list of main roads is in the Roads section above.
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 0.6 miles: Lane positioning matters here; at 0.6 miles (South Main Street): Sharp turn - reduce speed on approach; at 0.7 miles (West Terra Lane): Lane positioning matters here.
Yes. A round trip is manageable in a single day if you plan a break at Jefferson City, MO before heading back.
