Compiled and reviewed by the Trip.ovh planning team at COD Solutions Oy · Last reviewed Apr 18, 2026 · Editorial standards
Drive Time
16m
Distance
12.7 mi
21 km
Drive Score
6/10
Good drive
Same Day?
Yes, doable
Fuel Cost
$2
one way
EV Charging
Unknown
Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.
Saint Peters, MO
Wikimedia Commons
Wentzville, MO
Wikimedia Commons
The drive from Saint Peters, MO to Wentzville, MO covers 12.7 miles and takes about 16m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.
The route leans on I 70, South Church Street, South Linn Avenue for much of the mileage, and the overall profile is mostly highway. The longest uninterrupted segment is about 12.2 miles on I 70. At current regular gas prices, budget about $1.99 one way before food or hotel costs.
| Road | Distance | Duration |
|---|---|---|
| I 70 | 12.2 mi | 14m |
| South Church Street | 0.2 mi | <1m |
| South Linn Avenue | 0.1 mi | <1m |
| West 4th Street | <0.1 mi | <1m |
| East Allen Street | <0.1 mi | <1m |
Step-by-step road directions between Saint Peters, MO and Wentzville, MO.
Start on I 70
Take the exit
Enter roundabout onto South Church Street
Continue on South Church Street
Turn right onto West 4th Street
At end of road, turn left onto South Linn Avenue
Turn right onto East Allen Street
Arrive at destination
5 decision points cluster between mile 12.2 and 12.7 — GPS handles the exact turns, but know they're coming. Your lane choice matters more than the turn itself.
Take the exit toward MO Z
Exit ramp - move to the correct lane early
Enter roundabout onto South Church Street
Roundabout - know your exit number before entering
Turn right onto West 4th Street
Navigation decision point
At end of road, turn left onto South Linn Avenue
Complex interchange - multiple decisions in a short stretch
Turn right onto East Allen Street
Navigation decision point
Regular Gas
$1.99 one way
$3.97 round trip
| Fuel Type | $/gal | One Way | Round Trip |
|---|---|---|---|
| midgrade | $4.36 | $2.18 | $4.36 |
| premium | $4.89 | $2.44 | $4.89 |
| diesel | $5.61 | $2.80 | $5.61 |
No toll roads detected on this route.
Drive Cost (one way)
Fuel
$2
Estimated CO2 emission: 4.4 kg one way. Prices: EIA weekly data, 2026-04-13.
Driving Electric?
About $1 in charging · 0 stops · 75% less CO2
| Vehicle Type | kWh | Stops | DC Fast | Home Charge |
|---|---|---|---|---|
| Average EV | 3.8 | 0 | $1.33 | $0.61 |
| Efficient EV | 3.2 | 0 | $1.11 | $0.51 |
| EV Truck/SUV | 5.1 | 0 | $1.78 | $0.81 |
Gas CO2
4 kg
EV CO2
1 kg (75% 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.
Current conditions at both ends of the drive.
Origin
Afternoon in Saint Peters on Saturday
Local time
1:09 PM
CDT
Current temp
58°F
Sunny
Destination
Afternoon in Wentzville on Saturday
Local time
1:09 PM
CDT
Current temp
57°F
Unavailable
Time zone
Origin and destination are on the same clock, so arrival timing is easier to judge at a glance.
Temperature spread
A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.
Road read
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.
12.7 mi in 16m, mostly highway — 12.2 mi of that is on I 70.
This is a straightforward highway drive that stays mostly on I 70 and South Church Street. There are only a few real navigation decisions along the way. The trickiest moment comes around 12.2 miles in.
Easy - simple navigation with a manageable amount of wheel time
Balances navigation complexity with total wheel time.
This is a straightforward 16m drive. You will face about 6 decision points, but nothing that requires special attention if you follow navigation.
Where does it get tricky?
The main spots that need attention: at 12.2 miles: Exit ramp - move to the correct lane early; at 12.3 miles (South Church Street): Roundabout - know your exit number before entering; at 12.5 miles (West 4th Street): Navigation decision point.
Weekend Trip
Doable as a same-day drive at 16m. Total distance: 12.7 miles.
Family Friendly
Moderate complexity with 0 natural rest stops along the way.
Solo Traveler
16m drive, comfortable solo distance.
EV Driver
0 DC fast chargers along the route. Coverage: unknown.
First-Time Driver
Mostly highway driving (95%). Straightforward navigation.
Compiled by the Trip.ovh 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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