How far is Affton, MO from Wentzville, MO?
The driving distance from Affton, MO to Wentzville, MO is about 39.7 miles (63.9 km), with a travel time of about 00h 45m by car.
- The straight-line flight distance is about 33.3 miles (53.6 km).
- For a round trip, plan for roughly 01h 30m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CDT.
Reverse, save, or send this route
This is an easy same-day return drive. Copy the route link, send it to another device, or print a clean version before you head out.
This is an easy same-day return drive.
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 45m.
This is a short drive, so your comfort window is wide. Traffic and current weather matter more than the clock.
This departure sits inside the recommended comfort window for the route.
Halfway Point
A useful midpoint for breaks, coffee, or meeting in the middle.
A city in St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Showers And Thunderstorms
Mostly Cloudy then Slight Chance Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Affton and Wentzville.
Turn-by-Turn Driving Directions
Step-by-step road directions between Affton and Wentzville.
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1
Start on the route
81 m · 20 sec
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2
Turn slight right
20 m · 5 sec
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3
Turn right onto Gravois Road
64 m · 11 sec · Gravois Road
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4
Continue on Gravois Road
4 mi · 8 min · Gravois Road
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5
Take the ramp slight right toward I 270 North
2283 ft · 33 sec
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6
Merge slight left
8.1 mi · 10 min
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7
Take the exit slight right toward I 64, US 40, US 61: Wentzville, Saint Louis
705 ft · 17 sec
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8
Keep slight left to continue on I 64 West, US 40 West, US 61 North: Wentzville
2009 ft · 49 sec
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9
Continue on I 64 West, US 40 West, US 61 North: Wentzville
674 ft · 10 sec
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10
Merge slight left onto Avenue of the Saints
25.6 mi · 31 min · Avenue of the Saints
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11
Take the exit slight right toward Pitman Avenue
854 ft · 24 sec
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12
Turn left onto Pitman Avenue
113 m · 9 sec · Pitman Avenue
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13
Turn right onto Luetkenhaus Boulevard
791 ft · 23 sec · Luetkenhaus Boulevard
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14
Turn left onto East Pearce Boulevard
2451 ft · 1 min · East Pearce Boulevard
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15
Turn left onto North Elm Street
66 m · 12 sec · North Elm Street
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16
Turn right onto East Allen Street
61 m · 9 sec · East Allen Street
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17
Arrive at your destination
0 m · 1 sec · East Allen Street
Car Route Details
A richer read on the saved driving route between Affton 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 short regional drive
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
Slight Chance Showers And Thunderstorms leaving Affton and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Wentzville.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Affton to Wentzville?
The road trip is about 39.7 miles (63.9 km) and usually takes 00h 45m in normal driving conditions.
Is this a same-day trip or an overnight route?
This route is short enough to handle as a quick errand, commute, or easy same-day return without much planning overhead.
What is the halfway point on this route?
Chesterfield is a useful midpoint, sitting about 19.9 miles from Affton and 19.8 miles from Wentzville.
How much longer is the road route than the straight-line distance?
The direct path is about 33.3 miles (53.6 km), while the road route adds roughly 6.4 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 7:00 AM to 7:00 PM CDT. If you want a more comfortable same-day return, try to leave by 7:00 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $5.28 one way or $10.56 round trip. Estimated CO2 is about 12.4 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Showers And Thunderstorms around Affton and Mostly Cloudy then Slight Chance Showers And Thunderstorms near Wentzville.
Stop Ideas Near Chesterfield
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
Berkeley City Hall
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Chesterfield.
Kirkwood
Gateway Transportation Center
Washington
Alton
Flight Path Map
This map shows the direct air route between Affton and Wentzville. Straight-line distance: 33.32 mi (53.63 km).
#1 Affton
Census designated place
| Population | 20,307 |
| Coordinates | 38.5506100, -90.3331700 |
| Altitude | 188 |
| 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: 64 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 19m |
| 40 mph (64.37 km/h) | 00h 59m |
| 50 mph (80.47 km/h) | 00h 47m |
| 60 mph (96.56 km/h) | 00h 39m |
| 70 mph (112.65 km/h) | 00h 34m |
| 80 mph (129 km/h) | 00h 29m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $5.28 | $10.56 |
| Mid-grade | $4.25 | $5.95 | $11.91 |
| Premium | $4.65 | $6.52 | $13.03 |
| Diesel | $5.30 | $7.43 | $14.85 |
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 · Apr 24, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.