How far is Mehlville, MO from Chesterfield, MO?
The driving distance from Mehlville, MO to Chesterfield, MO is about 20.9 miles (33.7 km), with a travel time of about 00h 23m by car.
- The straight-line flight distance is about 17.4 miles (28 km).
- For a round trip, plan for roughly 00h 46m 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 23m.
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.
City in Saint Louis County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Rain Showers
Mostly Cloudy
Driving Route Map
The map below follows the saved road route between Mehlville and Chesterfield.
Turn-by-Turn Driving Directions
Step-by-step road directions between Mehlville and Chesterfield.
-
1
Start on Lemay Ferry Road
2211 ft · 56 sec · Lemay Ferry Road
-
2
Take the ramp left toward I 270 West
895 ft · 33 sec
-
3
Merge slight left
3093 ft · 44 sec
-
4
Continue straight
12 mi · 15 min
-
5
Take the exit slight right toward I 64, US 40, US 61: Wentzville, Saint Louis
705 ft · 17 sec
-
6
Keep slight left to continue on I 64 West, US 40 West, US 61 North: Wentzville
2009 ft · 49 sec
-
7
Continue on I 64 West, US 40 West, US 61 North: Wentzville
674 ft · 10 sec
-
8
Merge slight left onto Avenue of the Saints
5.9 mi · 7 min · Avenue of the Saints
-
9
Take the exit slight right toward Chesterfield Parkway West
116 m · 8 sec
-
10
Turn straight onto North Outer 40
2036 ft · 56 sec · North Outer 40
-
11
Turn left onto Chesterfield Parkway West
607 ft · 27 sec · Chesterfield Parkway West
-
12
Turn right
1674 ft · 33 sec
-
13
Turn straight onto Wild Horse Creek Road
48 m · 4 sec · Wild Horse Creek Road
-
14
Turn right onto Old Chesterfield Road
1576 ft · 1 min · Old Chesterfield Road
-
15
Turn left onto Santa Maria Drive
33 m · 5 sec · Santa Maria Drive
-
16
Arrive at your destination
0 m · 1 sec · Santa Maria Drive
Car Route Details
A richer read on the saved driving route between Mehlville and Chesterfield.
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.
I 270 West
Continue straight
12 mi · 00h 15m
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 Rain Showers leaving Mehlville and Mostly Cloudy near Chesterfield.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Mehlville to Chesterfield?
The road trip is about 20.9 miles (33.7 km) and usually takes 00h 23m 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?
Des Peres is a useful midpoint, sitting about 10.5 miles from Mehlville and 10.5 miles from Chesterfield.
How much longer is the road route than the straight-line distance?
The direct path is about 17.4 miles (28 km), while the road route adds roughly 3.5 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 7:44 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $2.79 one way or $5.58 round trip. Estimated CO2 is about 6.6 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Rain Showers around Mehlville and Mostly Cloudy near Chesterfield.
Stop Ideas Near Des Peres
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 Des Peres.
Kirkwood
Gateway Transportation Center
Alton
Washington
Flight Path Map
This map shows the direct air route between Mehlville and Chesterfield. Straight-line distance: 17.4 mi (28 km).
#1 Mehlville
Census designated place
| Population | 28,380 |
| Coordinates | 38.5083900, -90.3228900 |
| Altitude | 184 |
| Country | United States |
#2 Chesterfield
A city in St.
| Population | 47,570 |
| Coordinates | 38.6631100, -90.5770700 |
| Altitude | 144 |
| Country | United States |
End: Santa Maria Drive (-90.576914, 38.663102)
Estimated Travel Time
Distance: 34 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 41m |
| 40 mph (64.37 km/h) | 00h 31m |
| 50 mph (80.47 km/h) | 00h 25m |
| 60 mph (96.56 km/h) | 00h 20m |
| 70 mph (112.65 km/h) | 00h 17m |
| 80 mph (129 km/h) | 00h 15m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $2.79 | $5.58 |
| Mid-grade | $4.25 | $3.15 | $6.29 |
| Premium | $4.65 | $3.44 | $6.89 |
| Diesel | $5.30 | $3.92 | $7.85 |
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 29, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.