Origin
Ironton, MO
Night in Ironton on Saturday
Local time
9:48 PM
CDT
Current temp
59°F
Unavailable
Live forecast
Trip from Ironton, MO to Saint Peters, MO
Compiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 19, 2026 · Editorial standards
Drive Time
2h 19m
Distance
107.6 mi
173 km
Drive Score
8/10
Great drive
Same Day?
Yes, doable
Fuel Cost
$17
one way
EV Charging
Unknown
Best Time to Leave
4 AM
2h 9m
★
6 AM
2h 19m
8 AM
2h 38m
10 AM
2h 26m
12 PM
2h 24m
3 PM
2h 27m
5 PM
2h 37m
8 PM
2h 13m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Ironton, MO
Valeria Boltneva
Saint Peters, MO
Wikimedia Commons
Trip Overview
Ironton, MO to Saint Peters, MO is 107.6 miles and takes about 2 hours 19 minutes via US 67 and I-55, with a fuel budget near $17 and enough daylight to finish in a day. This straightforward drive will take you from the Midwest region of Missouri to another part of the Midwest, staying within the same state for the entire journey. With 95% of the route on highways, you'll find this trip to be a quick and efficient way to cover the distance. It’s a solid option if you're looking for a no-fuss trip with minimal planning required.
Trip Pace
Same-day drive is realistic
A same-day return is realistic if you keep stops short.
Midpoint
53.8 miles from Ironton, MO
A natural place for your longest stop of the day , about 1h 13m into the drive .
Main Roads
| Road | Distance | Duration |
|---|---|---|
| US 67 | 35.5 mi | 41m |
| I 55 | 20.5 mi | 22m |
| I 270 | 18.1 mi | 22m |
| MO 221 | 15.8 mi | 27m |
| I 70 | 10.5 mi | 13m |
| MO 21 | 1.7 mi | 2m |
| Rosa Parks Highway | 1.3 mi | 1m |
| Main Street | 0.3 mi | <1m |
Longest stretch:
US 67
— 35.5 mi, about 41m
Turn-by-Turn Driving Directions
Step-by-step road directions between Ironton, MO and Saint Peters, MO.
1
Start on Russell Street
0.2 mi
·
29 sec
·
Russell Street
2
At end of road, turn left onto MO 21
1.7 mi
·
2 min
·
MO 21
3
Turn right onto MO 221
0.3 mi
·
33 sec
·
Main Street
4
Turn right onto MO 221
8.7 mi
·
15 min
·
MO 221
5
Continue on MO 221
7.1 mi
·
12 min
·
MO 221
6
Continue on West Columbia Street
0.1 mi
·
32 sec
·
West Columbia Street
7
Take the ramp
0.2 mi
·
23 sec
Toward US 67 North: Saint Louis
8
Merge onto US 67
35 mi
·
40 min
·
US 67
9
Keep slight right at fork onto US 67
0.3 mi
·
27 sec
·
US 67
10
Take the exit
0.3 mi
·
49 sec
Toward I 55 North: Saint Louis
11
Merge onto I 55
21 mi
·
22 min
·
I 55
12
Continue on I 55
1.3 mi
·
1 min
·
Rosa Parks Highway
13
Take the exit
0.2 mi
·
27 sec
Exit 196
Toward I 270 West, I 255 East: Kansas City, Chicago
Use the slight right lane.
14
Keep slight left at fork
388 ft
·
8 sec
Toward I 270 West: Kansas City
Use the slight left lane.
15
Continue on this road
0.7 mi
·
1 min
·
this road
Exit 196
Toward I 270 West
16
Merge onto I 270
18 mi
·
22 min
·
I 270
Use the straight lane.
17
Take the exit
1.0 mi
·
1 min
Exit 20A
Toward I 70: Kansas City, Saint Louis, Saint Louis Lambert International Airport
Use the slight right lane.
18
Keep slight left at fork
0.1 mi
·
11 sec
Toward I 70 West: Kansas City
Use the slight left lane.
19
Continue on this road
0.6 mi
·
57 sec
·
this road
Exit 20B
Toward I 70 West: Kansas City
20
Merge onto I 70
11 mi
·
13 min
·
I 70
Use the straight / slight right lanes.
21
Arrive at destination
I 70
Trip Plan
Given the relatively short duration of 2 hours and 19 minutes, this trip is best suited for a single day. You'll want to depart Ironton, MO with a full tank of gas, as the longest stretch without a fuel stop is about 35.5 miles on US 67. While there are no designated stops in the data, remember that I-55 has numerous service areas for quick breaks. Aim to leave in the morning to take advantage of daylight and avoid potential rush hour traffic as you approach Saint Peters, MO.
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 53.8 miles from Ironton, MO, or about 1h 13m into the drive.
The longest continuous stretch on this route runs about 35.5 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 24 miles or 39m in
Use this first pause for coffee, a restroom break, and a quick traffic check ahead.
Halfway reset
Around 53.8 miles or 1h 13m 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 54m
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 Ironton, 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 Ironton, MO
This is one driving day of about 107.6 miles and 2h 19m.
Your first comfortable stop window is around 24 miles from Ironton, MO.
This route can stay practical as a one-day drive if traffic stays reasonable.
The longest stretch is on US 67 for about 35.5 miles.
Where to Stop
Rest stops, refuel points, and overnight suggestions along this route.
Mid-route town
Meal stop
54 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 24 miles helps settle the day before fatigue starts building.
Meal break
The midpoint is around 53.8 miles from Ironton, MO, which is a good place for a longer meal and fuel stop.
These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.
Heads-up: tricky spots
5 of 145 decision points cluster between mile 18.2 and 96.3 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
5
18.2 mi into trip
|
~32m in
Take the ramp toward US 67 North: Saint Louis
Navigation decision point
Toward US 67 North: Saint Louis
8
76 mi into trip
|
~1h 38m 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
76.3 mi into trip
|
~1h 39m 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
8
95.3 mi into trip
|
~2h 3m 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
96.3 mi into trip
|
~2h 4m 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
$16.82 one way
$33.64 round trip
$3.97/gal
25.4 MPG avg
38 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $18.47 | $36.94 |
| premium | $4.89 | $20.71 | $41.41 |
| diesel | $5.61 | $23.76 | $47.51 |
No toll roads detected on this route.
Estimated Trip Cost (one way, 1 person)
Fuel
$17
Meals
$25–$50
Total
$42–$67
Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.
Estimated CO2 emission: 37.6 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 | 32.3 | 0 | $11.30 | $5.16 |
| Efficient EV | 26.9 | 0 | $9.42 | $4.30 |
| EV Truck/SUV | 43 | 0 | $15.06 | $6.89 |
Gas CO2
38 kg
EV CO2
13 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.
Destination
Saint Peters, MO
Night in Saint Peters on Saturday
Local time
9:48 PM
CDT
Current temp
57°F
Unavailable
Live forecast
57°F
Imperial, MO
54 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
2 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
2h 19m 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.
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
~31 min detour
$19
near mile 77.9
View on nps.gov
Ste. Geneviève National Historical Park
National Historical Park
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...
25 mi from route
~62 min detour
Free
near mile 40.8
View on nps.gov
Park data from the National Park Service API. Alerts update every 2 hours.
What kind of drive is this?
This drive is predominantly highway-focused, with 95% of your journey taking place on major roadways like US 67 and I-55. You can expect long stretches of consistent speed, including one continuous segment of 35.5 miles on US 67. While the majority of the route involves cruising on interstates and major highways, the initial part on US 67 offers a slightly different feel before merging into the faster pace of I-55. Be prepared for a driving experience that prioritizes getting you to your destination efficiently.
95% highway — fuel and pacing are the main things to plan.
21 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 35.5 mi on US 67.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on US 67 and I 55. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 18.2 miles in.
Driving Effort
10/10
High effort - long or complex enough to need steady focus all day
Balances navigation complexity with total wheel time.
This is a demanding drive. With 14 significant decision points across 107.6 miles, you will need to stay alert - especially through interchange areas and urban stretches. Consider splitting it into segments if you are not comfortable with fast highway navigation.
Where does it get tricky?
The main spots that need attention: at 18.2 miles: Navigation decision point; at 76 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 76.3 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Towns Mentioned on Route Signs
Based on OSRM destination-sign hints, not a full list of every settlement the road passes.
Between Ironton, MO and Saint Peters, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Chicago
76 mi in
|
~1h 38m
Saint Louis
95.3 mi in
|
~2h 3m
Saint Louis Lambert International Airport
95.3 mi in
|
~2h 3m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 2h 19m. Total distance: 107.6 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
2h 19m drive, comfortable solo distance.
First-Time Driver
Mostly highway driving (95%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 35.5 miles on US 67. 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.
Only with planning. This is a long drive for kids — consider splitting it into two days rather than pushing through. Dedicated rest areas are limited, so plan gas or food stops as your bathroom breaks.
The main spots that need attention: at 18.2 miles: Navigation decision point; at 76 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 76.3 miles: Highway fork - watch signs carefully. 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.
How this page is built
Compiled by the US Trip Planner 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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