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Trip from Black Jack, MO to Wentzville, MO

Last recalculated Apr 15, 2026

Drive Time

47m

Distance

35.4 mi

57 km

Drive Score

8/10

Great drive

Same Day?

Yes, doable

Fuel Cost

$6

one way

Best Time to Leave

Save up to 12 min
4 AM
0h 44m ★
6 AM
0h 48m
8 AM
0h 56m
10 AM
0h 51m
12 PM
0h 50m
3 PM
0h 51m
5 PM
0h 55m
8 PM
0h 45m

Estimated drive times based on typical traffic patterns. Actual times may vary with weather, construction, and real-time conditions.

city in St. Louis County, Missouri, United States

Black Jack, MO

Wikimedia Commons

city in St. Charles County, Missouri, United States

Wentzville, MO

Wikimedia Commons

Trip Overview

The drive from Black Jack, MO to Wentzville, MO covers 35.4 miles and takes about 47m behind the wheel. This route is realistic as a one-day drive if you keep your stops efficient.

The route leans on I 70, Rosemary Straub Davison Highway, Old Halls Ferry Road for much of the mileage, and the overall profile is highway-focused drive. The longest uninterrupted segment is about 22.7 miles on I 70. At current regular gas prices, budget about $5.53 one way before food or hotel costs.

Trip Pace

Same-day drive is realistic

A same-day return is realistic if you keep stops short.

Break Rhythm

0 planned breaks

This drive is short enough that no stops are needed.

Midpoint

17.7 miles from Black Jack, MO

A natural place for your longest stop of the day , about 24m into the drive .

Drive Character

This is a 47m highway drive covering 35.4 miles, with most of the trip on I 70 and Rosemary Straub Davison Highway. The longest continuous stretch is about 22.7 miles on I 70.

Most of the miles stay on highways, which makes pacing and fuel planning easier than turn-by-turn city driving.
There are about 19 navigation steps in the underlying route data, so the final approach matters more than the middle miles.
I 70 is the longest continuous segment at about 22.7 miles.

How Hard Is This Drive?

This is a straightforward highway drive that stays mostly on I 70 and Rosemary Straub Davison Highway. This route has several spots where lane changes, forks, or exits need your full attention. The trickiest moment comes around 1.5 miles in near MO AC / New Halls Ferry Road.

Route Complexity 7/10

Focused - busy navigation packed into a short drive

This is a short but busy drive. With 15 decision points packed into just 35.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 47m.

Where does it get tricky?

The main spots that need attention: at 1.5 miles (MO AC / New Halls Ferry Road): Lane positioning matters here; at 2.4 miles (I 270 / Rosemary Straub Davison Highway): Merge point - match speed before joining. Lane positioning matters here; at 10.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.

Critical Maneuvers

5 of 15 key points

These are the spots where you need to pay the most attention. Preview them before you drive.

7
1.5 mi into trip | ~3m in | MO AC / New Halls Ferry Road

Turn left onto MO AC / New Halls Ferry Road

Lane positioning matters here

Use the left / right lanes.
5
2.4 mi into trip | ~5m in | I 270 / Rosemary Straub Davison Highway

Merge onto I 270 / Rosemary Straub Davison Highway

Merge point - match speed before joining. Lane positioning matters here

Use the straight / slight right lanes.
6
10.9 mi into trip | ~15m in

Take the exit toward I 70: Saint Louis, Kansas City

Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one

Exit 20A Toward I 70: Saint Louis, Kansas City
8
11.7 mi into trip | ~17m in

Keep slight right at fork toward I 70 West: Kansas City

Highway fork - watch signs carefully. Lane positioning matters here

Use the slight right lane. Exit 20B Toward I 70 West: Kansas City
6
35.3 mi into trip | ~47m in | South Linn Avenue

At end of road, turn left onto South Linn Avenue

Complex interchange - multiple decisions in a short stretch

Towns Mentioned on Route Signs

Based on OSRM destination-sign hints, not a full list of every settlement the road passes.

On the drive from Black Jack, MO to Wentzville, MO, road signs begin pointing toward Kansas City along the way.

Kansas City

10.9 mi in | ~15m

Main Roads

Road Distance Duration
I 70 22.7 mi 28m
Rosemary Straub Davison Highway 8.6 mi 10m
Old Halls Ferry Road 0.8 mi 1m
Mehl Avenue 0.6 mi 1m
Dunn Road 0.4 mi <1m
New Halls Ferry Road 0.2 mi <1m
South Church Street 0.2 mi <1m
South Linn Avenue 0.1 mi <1m
Longest stretch: I 70 — 22.7 mi, about 28m

Turn-by-Turn Driving Directions

Step-by-step road directions between Black Jack, MO and Wentzville, MO.

1

Start on Parker Road

392 ft · 9 sec · Parker Road
2

Continue on Old Halls Ferry Road

0.8 mi · 1 min · Old Halls Ferry Road
3

Turn right onto Mehl Avenue

0.6 mi · 1 min · Mehl Avenue
4

Turn right onto Netherton Drive

394 ft · 18 sec · Netherton Drive
5

Turn left onto MO AC

0.2 mi · 19 sec · New Halls Ferry Road
Use the left / right lanes.
6

Turn sharp right onto Dunn Road

0.4 mi · 53 sec · Dunn Road
7

Take the ramp

0.3 mi · 33 sec
Toward I 270 West
8

Merge onto I 270

8.6 mi · 10 min · Rosemary Straub Davison Highway
Use the straight / slight right lanes.
9

Take the exit

0.3 mi · 25 sec
Exit 20A Toward I 70: Saint Louis, Kansas City
10

Continue on this road

0.5 mi · 42 sec · this road
Exit 20A-B Toward I 70: Saint Louis, Kansas City Use the slight left / slight right lanes.
11

Keep slight right at fork

0.5 mi · 41 sec
Exit 20B Toward I 70 West: Kansas City Use the slight right lane.
12

Merge onto I 70

23 mi · 28 min · I 70
Use the straight / slight right lanes.
13

Take the exit

0.2 mi · 23 sec
Exit 209 Toward MO Z
14

Enter roundabout onto South Church Street

20 ft · 0 sec · South Church Street
15

Continue on South Church Street

0.2 mi · 39 sec · South Church Street
16

Turn right onto West 4th Street

442 ft · 20 sec · West 4th Street
17

At end of road, turn left onto South Linn Avenue

0.1 mi · 26 sec · South Linn Avenue
18

Turn right onto East Allen Street

40 ft · 1 sec · East Allen Street
19

Arrive at destination

East Allen Street

Trip Plan

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 17.7 miles from Black Jack, MO, or about 24m into the drive.
The longest continuous stretch on this route runs about 22.7 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 35 miles or 46m in

Use this first pause for coffee, a restroom break, and a quick traffic check ahead.

Halfway reset

Around 17.7 miles or 24m in

This is the best place for your longest stop, a real meal, and a full fuel check.

Final approach

Final hour starts around 40m

Traffic, exits, and arrival timing usually matter more near Wentzville, MO than in the middle of the route.

Before You Leave

+

Have your navigation ready before leaving Black Jack, MO.

Day 1

Settle into the route from Black Jack, MO

This is one driving day of about 35.4 miles and 47m.

At 35.4 miles this is a quick drive — no planned stops needed.
The longest stretch is on I 70 for about 22.7 miles.

Where to Stop

Rest stops, refuel points, and overnight suggestions along this route.

Halfway Point

Midpoint

About 17.7 mi from Black Jack, MO · 24m into the drive

city in and county seat of St. Charles County, Missouri, United States

Mid-route town

Meal stop

Saint Charles, MO

18 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

O'Fallon, MO

Fuel and coffee

A short stop after about 35 miles helps settle the day before fatigue starts building.

Saint Charles, MO

Meal break

The midpoint is around 17.7 miles from Black Jack, MO, which is a good place for a longer meal and fuel stop.

Arriving in Wentzville, MO

Allow a few extra minutes for the final approach into Wentzville, MO if you are unfamiliar with the area.

These stop ideas are pacing suggestions — the exact town or exit can change with traffic, hotel plans, and fuel range.

Fuel & Cost

Regular Gas

$5.53 one way

$11.07 round trip

$3.97/gal 25.4 MPG avg 12 kg CO2
Fuel Type $/gal One Way Round Trip
midgrade $4.36 $6.08 $12.15
premium $4.89 $6.81 $13.62
diesel $5.61 $7.82 $15.63

No toll roads detected on this route.

Estimated Trip Cost (one way, 1 person)

Fuel

$6

Meals

$25–$50

Total

$31–$56

Rough estimate based on US averages. Hotel $80–$140/night, meals $25–$50/day.

Estimated CO2 emission: 12.4 kg one way. Prices: EIA weekly data, 2026-04-13.

Driving Electric?

About $4 in charging · 0 stops · 67% less CO2

Vehicle Type kWh Stops DC Fast Home Charge
Average EV 10.6 0 $3.72 $1.70
Efficient EV 8.9 0 $3.10 $1.42
EV Truck/SUV 14.2 0 $4.96 $2.27

Gas CO2

12 kg

EV CO2

4 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 Apr 15, 2026

Origin

Black Jack, MO

Evening in Black Jack on Wednesday

Local time

5:56 PM

CDT

Current temp

58°F

Unavailable

Live forecast

Destination

Wentzville, MO

Evening in Wentzville on Wednesday

Local time

5:56 PM

CDT

Current temp

57°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 cooler at arrival

A meaningful temperature swing is a good cue to rethink layers, water, and how soon you want to arrive.

Road read

47m 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.

Frequently Asked Questions

The drive from Black Jack, MO to Wentzville, MO covers 35.4 miles and takes about 47m without stops. Add 15-30 minutes for a fuel or rest stop on longer drives.
The main roads are I 70, Rosemary Straub Davison Highway, Old Halls Ferry Road. Most of the drive stays on highways, so watch for ramps and exits.
This is a comfortable same-day trip.
The midpoint is about 17.7 miles from Black Jack, MO. Look for rest areas, gas stations, or food options near the halfway mark.
At current regular gas prices, expect to spend about $5.53 one way. This estimate uses 25.4 MPG — your actual cost will vary with your vehicle's fuel efficiency and current gas prices.
Leave by 9 AM and you'll arrive before lunch. Even a 4 PM departure gets you there before dark in summer.
This is a short but busy drive. With 15 decision points packed into just 35.4 miles, you will need to pay attention to lane changes and exits — but the whole thing is over in 47m.
The main spots that need attention: at 1.5 miles (MO AC / New Halls Ferry Road): Lane positioning matters here; at 2.4 miles (I 270 / Rosemary Straub Davison Highway): Merge point - match speed before joining. Lane positioning matters here; at 10.9 miles: Exit ramp - move to the correct lane early. Multiple destination signs - pick the right one.
On the drive from Black Jack, MO to Wentzville, MO, road signs begin pointing toward Kansas City along the way.

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