O'Fallon, MO to Lee's Summit, MO is 213.4 miles and takes about 4h 5m via I 70 and I 470, with a fuel budget near $33 and enough daylight to finish in a day. This trip stays entirely within Missouri, making it a straightforward hop across the Midwest. Most of the drive is on major interstates, so expect a consistent pace. With only one recommended stop and a short duration, this route is ideal for a quick, no-fuss transit between these two points.
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
106.7 miles from O'Fallon, MO
A natural place for your longest stop of the day
, about 2h 1m into the drive
.
Main Roads
Road
Distance
Duration
I 70
200.7 mi
3h 46m
I 470
6.4 mi
7m
MO 291
2.5 mi
4m
Truman/Eisenhower Presidential Highway
1.6 mi
1m
Southeast 3rd Street
0.9 mi
2m
South Main Street
0.6 mi
1m
Southwest 3rd Street
0.3 mi
<1m
West Terra Lane
0.1 mi
<1m
Longest stretch:
I 70
— 200.7 mi, about 3h 46m
Traffic on I-70
Hour-of-day weekday pattern from 21 FHWA count stations on your route.
Peak
4 PM
~2,549 veh/hr typical
· worst 3,000
Quietest
1 AM
~241 veh/hr
Peak-to-quiet ratio
10.6×
busier at peak than in the quiet hours
12a6anoon6p11p
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 Lee's Summit, MO.
Exit 15AToward I 470 South, MO 291 South: Lee's SummitUse the right lane.
10
Merge onto I 470; MO 291
6.4 mi·7 min·I 470; MO 291
11
Keep slight left at fork onto MO 291
2.5 mi·4 min·MO 291
Exit 10BToward MO 291 South: HarrisonvilleUse the slight left / straight lanes.
12
Turn right onto Southeast 3rd Street
0.9 mi·2 min·Southeast 3rd Street
13
Continue on Southwest 3rd Street
0.3 mi·40 sec·Southwest 3rd Street
14
Arrive at destination
Southwest 3rd Street
Trip Plan
Given the 4-hour drive time, departing O'Fallon in the morning allows plenty of time to reach Lee's Summit before evening. The route is designed for efficiency with only one recommended stop, so you can make good time. Keep an eye on your fuel as you approach the 200-mile mark on I 70, as services might be less frequent in certain stretches. Since this is a single-day trip, you have flexibility to leave a bit later if needed, but aim to avoid peak rush hour traffic near Kansas City.
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 106.7 miles from O'Fallon, MO, or about 2h 1m into the drive.
The longest continuous stretch on this route runs about 200.7 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 47 miles or 54m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 106.7 miles or 2h 1m 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 18m
Traffic, exits, and arrival timing usually matter more near Lee's Summit, 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 213.4 miles and 4h 5m.
Your first comfortable stop window is around 47 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 70 for about 200.7 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 10
5 decision points cluster between mile 0.6 and 209.7 — 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.
8
203.1 mi into trip|~3h 50m in
Take the exit toward I 470 South, MO 291 South: Lee's Summit
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the right lane.
Exit 15A
Toward I 470 South, MO 291 South: Lee's Summit
8
209.7 mi into trip|~3h 58m in|MO 291
Keep slight left at fork onto MO 291 toward MO 291 South: Harrisonville
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left / straight lanes.
Exit 10B
Toward MO 291 South: Harrisonville
Fuel & Cost
Regular Gas
$31.51 one way
$63.03 round trip
$3.75/gal25.4 MPG avg75 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.14
$34.79
$69.58
premium
$4.72
$39.62
$79.24
diesel
$4.80
$40.29
$80.59
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$32
Meals
$25–$50
Total
$57–$82
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 74.7 kg one way.
Prices: EIA weekly data, 2026-07-13.
Driving Electric?
About $22 in charging
· 0 stops
· 67% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
64
0
$22.41
$10.24
Efficient EV
53.4
0
$18.67
$8.54
EV Truck/SUV
85.4
1
$29.88
$13.66
Gas CO2
75 kg
EV CO2
25 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.
Forecast as of Jul 18, 2026
Origin
O'Fallon, MO
Late night
in O'Fallon on Sunday
Local time
5:58 AM
CDT
Current temp
75°F
Slight Chance Showers And Thunderstorms
W 1 to 7 mph18% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 3:26PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Heat Advisory
Heat Advisory issued July 18 at 12:07PM CDT until July 18 at 8:00PM CDT by NWS Memphis TN
Destination
Lee's Summit, MO
Late night
in Lee's Summit on Sunday
Local time
5:58 AM
CDT
Current temp
91°F
Chance Showers And Thunderstorms
WSW 6 mph25% chanceLive forecast
Heat Advisory
Heat Advisory issued July 18 at 3:26PM CDT until July 18 at 7:00PM CDT by NWS Quad Cities IA IL
Heat Advisory
Heat Advisory issued July 18 at 12:07PM CDT until July 18 at 8:00PM CDT by NWS Memphis TN
91°F
Columbia, MO
107 mi in
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
16 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
4h 5m 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.
More Details
What kind of drive is this?
This is an almost entirely highway drive, with 98% of the route on interstates like I 70 and I 470. You'll be on I 70 for a long stretch of 200.7 miles before transitioning to I 470 and MO 291. Expect frequent exits and merging traffic as you pass through populated areas, especially closer to your destination.
98% highway — fuel and pacing are the main things to plan.
14 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 200.7 mi on I 70.
How Hard Is This Drive?
5/10
This is a straightforward highway drive that stays mostly on I 70 and I 470. You will hit about 10 points where you need to pay attention to lane position or signs. The trickiest moment comes around 0.6 miles in.
Driving Effort5/10
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 213.4 miles you will encounter 10 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 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.
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.
Lee's Summit is a city in Missouri. It is the hometown of famous outlaw Cole Younger of the James-Younger Gang, and of Grammy Award-winning musician Pat Metheny.
Doable as a same-day drive at 4h 5m. Total distance: 213.4 miles.
Family Friendly
Moderate complexity with 1 natural rest stops along the way.
Solo Traveler
4h 5m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (98%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 200.7 miles on I 70. The full list of main roads is in the Roads section above.
Yes — we found about 29 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 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.
Possible but tiring. At 4.1 hours each way, an in-and-out day trip would put you behind the wheel for 8.2 hours — manageable with a long break at Lee's Summit, MO, but most travelers stay overnight.
