How far is Arnold, MO from Wentzville, MO?
The driving distance from Arnold, MO to Wentzville, MO is about 45.4 miles (73.1 km), with a travel time of about 00h 46m by car.
- The straight-line flight distance is about 36.7 miles (59 km).
- For a round trip, plan for roughly 01h 32m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 8:00 AM to 10:00 AM CDT.
Reverse, save, or send this route
This route works well as a day trip with time at the destination. Copy the route link, send it to another device, or print a clean version before you head out.
This route works well as a day trip with time at the destination.
Flight Distance
Driving Distance
Gas Cost Calculator
Leave and Arrive Planner
Pick a departure time to see your estimated arrival and same-day return window.
Drive time stays fixed at 00h 46m.
A morning start gives you useful time at the destination and keeps the return out of the late evening.
You are leaving earlier than the recommended window, which gives you extra margin for breaks and traffic.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
Township in Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Sunny
Driving Route Map
The map below follows the saved road route between Arnold and Wentzville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Arnold and Wentzville.
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1
Start on Jeffco Boulevard
1.4 km · 2 min · Jeffco Boulevard
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2
Turn left
1283 ft · 28 sec
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3
Take the ramp slight right toward I 55 North
1225 ft · 31 sec
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4
Merge slight left onto Police Officer Steven Jarvis Memorial Highway
1.4 km · 1 min · Police Officer Steven Jarvis Memorial Highway
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5
Continue on Officer Thomas G. Smith, Jr. Memorial Highway
1.9 mi · 2 min · Officer Thomas G. Smith, Jr. Memorial Highway
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6
Continue on Rosa Parks Highway
1.3 mi · 2 min · Rosa Parks Highway
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7
Take the exit slight right toward I 270 West, I 255 East: Kansas City, Chicago
1279 ft · 27 sec
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8
Keep slight left to continue on I 270 West: Kansas City
118 m · 8 sec
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9
Continue on I 270 West
1.2 km · 1 min
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10
Merge slight left
11.5 mi · 14 min
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11
Take the exit slight right toward I 64, US 40, US 61: Wentzville, Saint Louis
705 ft · 17 sec
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12
Keep slight left to continue on I 64 West, US 40 West, US 61 North: Wentzville
2009 ft · 49 sec
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13
Continue on I 64 West, US 40 West, US 61 North: Wentzville
674 ft · 10 sec
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14
Merge slight left onto Avenue of the Saints
25.6 mi · 31 min · Avenue of the Saints
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15
Take the exit slight right toward Pitman Avenue
854 ft · 24 sec
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16
Turn left onto Pitman Avenue
113 m · 9 sec · Pitman Avenue
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17
Turn right onto Luetkenhaus Boulevard
791 ft · 23 sec · Luetkenhaus Boulevard
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18
Turn left onto East Pearce Boulevard
2451 ft · 1 min · East Pearce Boulevard
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19
Turn left onto North Elm Street
66 m · 12 sec · North Elm Street
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20
Turn right onto East Allen Street
61 m · 9 sec · East Allen Street
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21
Arrive at your destination
0 m · 1 sec · East Allen Street
Car Route Details
A richer read on the saved driving route between Arnold and Wentzville.
Turn-heavy local drive
The route has frequent decision points for its length, so lane choice and turn timing will matter more than cruising speed.
Avenue of the Saints
Merge slight left onto Avenue of the Saints
25.6 mi · 00h 31m
Route Summary
A quick read on whether this route feels easy, ambitious, or worth planning around.
A comfortable day-trip route
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
Sunny leaving Arnold and Sunny near Wentzville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Arnold to Wentzville?
The road trip is about 45.4 miles (73.1 km) and usually takes 00h 46m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route works well as a day trip. You can leave in the morning, spend meaningful time at the destination, and still return the same day.
What is the halfway point on this route?
Lake is a useful midpoint, sitting about 22.6 miles from Arnold and 22.9 miles from Wentzville.
How much longer is the road route than the straight-line distance?
The direct path is about 36.7 miles (59 km), while the road route adds roughly 8.7 extra miles because roads do not follow the straight air line.
When is the best time to leave for this route?
A good departure window is usually 8:00 AM to 10:00 AM CDT. If you want a more comfortable same-day return, try to leave by 4:58 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $6.03 one way or $12.07 round trip. Estimated CO2 is about 14.2 kg one way.
What should you check before leaving?
Before you leave, expect Sunny around Arnold and Sunny near Wentzville.
Stop Ideas Near Lake
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Lake.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Arnold and Wentzville. Straight-line distance: 36.64 mi (58.97 km).
#1 Arnold
City in Missouri
| Population | 21,145 |
| Coordinates | 38.4328300, -90.3776200 |
| Altitude | 184 |
| Country | United States |
#2 Wentzville
A city in St.
| Population | 43,109 |
| Coordinates | 38.8114400, -90.8529100 |
| Altitude | 190 |
| Country | United States |
End: East Allen Street (-90.852906, 38.81143)
Estimated Travel Time
Distance: 73 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 30m |
| 40 mph (64.37 km/h) | 01h 08m |
| 50 mph (80.47 km/h) | 00h 54m |
| 60 mph (96.56 km/h) | 00h 45m |
| 70 mph (112.65 km/h) | 00h 38m |
| 80 mph (129 km/h) | 00h 34m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $6.03 | $12.07 |
| Mid-grade | $4.25 | $6.80 | $13.61 |
| Premium | $4.65 | $7.45 | $14.89 |
| Diesel | $5.30 | $8.49 | $16.97 |
Assumes 8.3 L/100 km (about 28.3 MPG). CO2 is an estimate and varies by vehicle, fuel blend, traffic, and terrain.
Prices in Missouri · May 13, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.