If you are planning a trip from Farmington to Saint Peters, expect a straightforward journey spanning 89.7 miles. You can comfortably complete this drive in about 1 hour and 26 minutes, making it an ideal day trip that requires no overnight stops. Budgeting approximately $14 for fuel will cover your transit costs between these two Missouri locations. Since both cities are located within the Midwest, you will experience a consistent regional feel throughout the entire excursion. Because this route involves no formal planned stops, you have the flexibility to manage your own schedule and pace. It is a practical, efficient way to travel across the state without the need for extensive logistical planning.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
44.8 miles from Farmington, MO
A natural place for your longest stop of the day
, about 53m into the drive
.
Main Roads
Road
Distance
Duration
I 55
20.5 mi
22m
US 67
19.2 mi
22m
I 270
18.1 mi
22m
MO 32
15 mi
17m
I 70
10.5 mi
13m
Rosa Parks Highway
1.3 mi
1m
West Karsch Boulevard
1.1 mi
2m
North Washington Street
0.4 mi
<1m
Longest stretch:
I 55
— 20.5 mi, about 22m
Turn-by-Turn Driving Directions
Step-by-step road directions between Farmington, MO and Saint Peters, MO.
1
Start on North Jefferson Street
518 ft·24 sec·North Jefferson Street
2
Turn right onto West Spring Street
250 ft·15 sec·West Spring Street
3
Turn left onto MO H
0.4 mi·56 sec·North Washington Street
4
Turn left onto MO 32
1.1 mi·2 min·West Karsch Boulevard
5
Keep slight right at fork onto MO 32
15 mi·17 min·MO 32
6
Continue on US 67
19 mi·21 min·US 67
7
Keep slight right at fork onto US 67
0.3 mi·27 sec·US 67
8
Take the exit
0.3 mi·49 sec
Toward I 55 North: Saint Louis
9
Merge onto I 55
21 mi·22 min·I 55
10
Continue on I 55
1.3 mi·1 min·Rosa Parks Highway
11
Take the exit
0.2 mi·27 sec
Exit 196Toward I 270 West, I 255 East: Kansas City, ChicagoUse the slight right lane.
12
Keep slight left at fork
388 ft·8 sec
Toward I 270 West: Kansas CityUse the slight left lane.
13
Continue on this road
0.7 mi·1 min·this road
Exit 196Toward I 270 West
14
Merge onto I 270
18 mi·22 min·I 270
Use the straight lane.
15
Take the exit
1.0 mi·1 min
Exit 20AToward I 70: Kansas City, Saint Louis, Saint Louis Lambert International AirportUse the slight right lane.
16
Keep slight left at fork
0.1 mi·11 sec
Toward I 70 West: Kansas CityUse the slight left lane.
17
Continue on this road
0.6 mi·57 sec·this road
Exit 20BToward I 70 West: Kansas City
18
Merge onto I 70
11 mi·13 min·I 70
Use the straight / slight right lanes.
19
Arrive at destination
I 70
Trip Plan
Since this is a relatively short trip, you have the advantage of total departure flexibility, but leaving during off-peak hours will help you navigate local streets more easily. With a $14 fuel budget, it is smart to fill your tank before leaving Farmington so you do not have to worry about finding a station while navigating local turns. Keep a close eye on your navigation as you transition between West Spring Street and North Washington Street, as the lack of highway driving means you will be making more frequent maneuvers. Take advantage of the 1 hour and 26 minute duration to plan your arrival in Saint Peters without the stress of a long-haul schedule. Because you are sticking to local roads, remain alert for changing speed limits as you move through different town stretches.
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 44.8 miles from Farmington, MO, or about 53m into the drive.
The longest continuous stretch on this route runs about 20.5 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 20 miles or 25m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 44.8 miles or 53m 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 31m
Traffic, exits, and arrival timing usually matter more near Saint Peters, MO than in the middle of the route.
Before You Leave
+
Open the route before leaving Farmington, MO so your first major turns are already loaded.
Day 1
Settle into the route from Farmington, MO
This is one driving day of about 89.6 miles and 1h 48m.
Your first comfortable stop window is around 20 miles from Farmington, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on I 55 for about 20.5 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 58.1 and 78.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
8
58.1 mi into trip|~1h 8m in
Take the exit toward I 270 West, I 255 East: Kansas City, Chicago
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 196
Toward I 270 West, I 255 East: Kansas City, Chi...
8
58.3 mi into trip|~1h 8m in
Keep slight left at fork toward I 270 West: Kansas City
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight left lane.
Toward I 270 West: Kansas City
5
59.2 mi into trip|~1h 10m in|I 270
Merge onto I 270
Merge point - match speed before joining. Lane positioning matters here
Use the straight lane.
8
77.3 mi into trip|~1h 32m 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
78.3 mi into trip|~1h 34m 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
Fuel & Cost
Regular Gas
$14.01 one way
$28.02 round trip
$3.97/gal25.4 MPG avg31 kg CO2
Fuel Type
$/gal
One Way
Round Trip
midgrade
$4.36
$15.38
$30.76
premium
$4.89
$17.24
$34.49
diesel
$5.61
$19.78
$39.57
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$14
Meals
$25–$50
Total
$39–$64
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 31.3 kg one way.
Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $9 in charging
· 0 stops
· 68% less CO2
Vehicle Type
kWh
Stops
DC Fast
Home Charge
Average EV
26.9
0
$9.41
$4.30
Efficient EV
22.4
0
$7.84
$3.58
EV Truck/SUV
35.8
0
$12.54
$5.73
Gas CO2
31 kg
EV CO2
10 kg (68% 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 12, 2026
Origin
Farmington, MO
Late night
in Farmington on Sunday
Local time
4:57 AM
CDT
Current temp
56°F
Unavailable
Live forecast
Destination
Saint Peters, MO
Late night
in Saint Peters on Sunday
Local time
4:57 AM
CDT
Current temp
62°F
Partly Cloudy
S 8 mph2% chanceLive forecast
Special Weather Statement
Special Weather Statement issued April 12 at 12:21AM CDT by NWS Paducah KY
Flood Warning
Flood Warning issued April 11 at 9:46PM CDT until April 18 at 1:00PM CDT by NWS St Louis MO
57°F
Imperial, MO
45 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
6 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
1h 48m 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.
National Parks Near This Route
Worth a detour if your schedule allows.
Gateway Arch National Park
National Park
Gateway Arch National Park commemorates President Jefferson’s vision of a continental nation, the individuals and cultural groups who helped shape its history, St. Louis’ role in westward expansion, a...
12 mi from route
~29 min detour
$19
near mile 58.7
Established by 1750, Ste. Geneviève was the first permanent European settlement in Missouri. Early French Canadian settlers were drawn here by the rich agricultural land known as Le Grand Champ (the B...
24 mi from route
~61 min detour
Free
near mile 21.6
Park data from the National Park Service API. Alerts update every 2 hours.
More Details
What kind of drive is this?
Expect a turn-heavy local drive rather than a monotonous interstate cruise on this 89.7-mile trek. With a highway share of 0%, your journey will rely entirely on local roads like West Spring Street, North Washington Street, and West Karsch Boulevard. Navigating these segments requires your full attention as you transition between local thoroughfares. Unlike high-speed highway routes, this drive offers a more technical experience behind the wheel. Because there is no single longest uninterrupted stretch, you should prepare for a consistent rhythm of turns as you progress through the Missouri landscape.
93% highway — fuel and pacing are the main things to plan.
19 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 20.5 mi on I 55.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 55 and US 67. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 58.1 miles in.
Driving Effort10/10
Demanding - stay alert through the decision-heavy sections
Balances navigation complexity with total wheel time.
This drive requires moderate attention. Across 89.6 miles you will encounter 13 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 58.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 58.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 59.2 miles (I 270): Merge point - match speed before joining. Lane positioning matters here.
Elevation Profile
Mostly flat terrain
953 ft443 ft
Total Climb
231 ft
Total Descent
703 ft
Highest Point
953 ft
~3.7 mi in
Elevation Range
510 ft
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Farmington, MO and Saint Peters, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Chicago
58.1 mi in|~1h 8m
Saint Louis
77.3 mi in|~1h 32m
Saint Louis Lambert International Airport
77.3 mi in|~1h 32m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 1h 48m. Total distance: 89.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
1h 48m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (93%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 20.5 miles on I 55. 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 Saint Peters, 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 58.1 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 58.3 miles: Highway fork - watch signs carefully. Lane positioning matters here; at 59.2 miles (I 270): Merge point - match speed before joining. Lane positioning matters here.
Yes — Gateway Arch National Park and Ste. Geneviève National Historical Park. See the National Parks section for detour distances and tips on detours.
Yes. A round trip is manageable in a single day if you plan a break at Saint Peters, MO before heading back.
