Origin
Ladue, MO
Late night in Ladue on Tuesday
Local time
3:59 AM
CDT
Current temp
70°F
Unavailable
Live forecast
Trip from Ladue, MO to Saint Peters, MO
Pin this tripCompiled and reviewed by the US Trip Planner planning team at COD Solutions Oy · Last reviewed Apr 21, 2026 · Editorial standards
Drive Time
32m
Distance
23.2 mi
37 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$4
one way
EV Charging
Fair
3 stations
Best Time to Leave
4 AM
0h 30m
★
6 AM
0h 33m
8 AM
0h 38m
10 AM
0h 35m
12 PM
0h 34m
3 PM
0h 35m
5 PM
0h 38m
8 PM
0h 31m
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Ladue, MO
Valeria Boltneva
Saint Peters, MO
Wikimedia Commons
Trip Overview
This short, 23.2-mile drive from Ladue, MO to Saint Peters, MO is easily manageable in just 32 minutes, making it a perfect day trip. With an estimated fuel cost of only $4, it's an economical option for a quick journey within the Midwest region. The route is primarily highway-focused, utilizing major interstates like I-70 and I-270, along with US 61. Since there are no recommended overnight stops, you can comfortably complete this trip in a single day, enjoying a straightforward commute between these Missouri locations.
Main Roads
| Road | Distance | Duration |
|---|---|---|
| I 70 | 10.5 mi | 13m |
| I 270 | 6.1 mi | 7m |
| US 61 | 2.2 mi | 2m |
| Clayton Road | 1.4 mi | 3m |
| Barnes Road | 0.6 mi | 2m |
| South Lindbergh Boulevard | 0.1 mi | <1m |
Longest stretch:
I 70
— 10.5 mi, about 13m
Turn-by-Turn Driving Directions
Step-by-step road directions between Ladue, MO and Saint Peters, MO.
1
Start on Barnes Road
0.6 mi
·
2 min
·
Barnes Road
2
Turn right onto Clayton Road
1.4 mi
·
3 min
·
Clayton Road
3
Turn right onto US 61; US 67; HR 66
0.1 mi
·
18 sec
·
South Lindbergh Boulevard
4
Take the exit onto US 61
2.2 mi
·
2 min
·
US 61
Toward I 64 West, US 40 West, US 61 North
Use the straight lane.
5
Take the exit
0.1 mi
·
16 sec
Exit 25
Toward I 270: Memphis, Chicago
Use the slight right lane.
6
Keep slight right at fork
0.3 mi
·
25 sec
Toward I 270 North: Chicago
Use the slight right lane.
7
Merge onto I 270
6.1 mi
·
7 min
·
I 270
Use the straight lane.
8
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.
9
Keep slight left at fork
0.1 mi
·
11 sec
Toward I 70 West: Kansas City
Use the slight left lane.
10
Continue on this road
0.6 mi
·
57 sec
·
this road
Exit 20B
Toward I 70 West: Kansas City
11
Merge onto I 70
11 mi
·
13 min
·
I 70
Use the straight / slight right lanes.
12
Arrive at destination
I 70
Heads-up: tricky spots
5 of 95 decision points cluster between mile 2.2 and 11.9 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
7
2.2 mi into trip
|
~6m in
|
US 61
Take the exit onto US 61 toward I 64 West, US 40 West, US 61 North
Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one
Use the straight lane.
Toward I 64 West, US 40 West, US 61 North
8
4.4 mi into trip
|
~8m in
Take the exit toward I 270: Memphis, 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 25
Toward I 270: Memphis, Chicago
8
4.5 mi into trip
|
~9m in
Keep slight right at fork toward I 270 North: Chicago
Highway fork - watch signs carefully. Lane positioning matters here
Use the slight right lane.
Toward I 270 North: Chicago
8
10.9 mi into trip
|
~17m 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
11.9 mi into trip
|
~18m 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
$3.63 one way
$7.25 round trip
$3.97/gal
25.4 MPG avg
8 kg CO2
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $3.98 | $7.96 |
| premium | $4.89 | $4.46 | $8.93 |
| diesel | $5.61 | $5.12 | $10.24 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$4
Estimated CO2 emission: 8.1 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $2 in charging · 0 stops · 63% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 7 | 0 | $2.44 | $1.11 |
| Efficient EV | 5.8 | 0 | $2.03 | $0.93 |
| EV Truck/SUV | 9.3 | 0 | $3.25 | $1.48 |
Gas CO2
8 kg
EV CO2
3 kg (63% 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
Late night in Saint Peters on Tuesday
Local time
3:59 AM
CDT
Current temp
71°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 warmer at arrival
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
32m 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.
What kind of drive is this?
Expect a highway-focused experience on this route, with 81% of the journey taking place on interstates and major highways. You'll encounter a longest stretch of 10.5 miles on I-70, offering a consistent pace. The drive will generally feel like a typical interstate commute, characterized by smooth, fast-paced travel. The main roads guiding you include I-70, I-270, and US 61, ensuring a direct and efficient path between Ladue and Saint Peters.
81% highway — fuel and pacing are the main things to plan.
12 navigation steps total — most of the decisions cluster near the start and finish.
Longest single stretch: 10.5 mi on I 70.
How Hard Is This Drive?
10/10
This is a straightforward highway drive that stays mostly on I 70 and I 270. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 2.2 miles in near US 61.
Driving Effort
10/10
Focused - lots of decisions in a short distance, but it is over quickly
Balances navigation complexity with total wheel time.
This is a short but busy drive. With 9 decision points packed into just 23.2 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 32m.
Where does it get tricky?
The main spots that need attention: at 2.2 miles (US 61): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.5 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 Ladue, MO and Saint Peters, MO, road signs point toward Chicago, Saint Louis and Saint Louis Lambert International Airport.
Chicago
4.4 mi in
|
~8m
Saint Louis
10.9 mi in
|
~17m
Saint Louis Lambert International Airport
10.9 mi in
|
~17m
Who Is This Route For?
Weekend Trip
Doable as a same-day drive at 32m. Total distance: 23.2 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
32m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (81%). Some complex stretches to watch for.
Frequently Asked Questions
The longest stretch is about 10.5 miles on I 70. 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 2.2 miles (US 61): Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.4 miles: Exit ramp - move to the correct lane early. Lane positioning matters here. Multiple destination signs - pick the right one; at 4.5 miles: Highway fork - watch signs carefully. Lane positioning matters here.
Yes — Gateway Arch National 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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