How far is Lake Saint Louis, MO from Chesterfield, MO?
The driving distance from Lake Saint Louis, MO to Chesterfield, MO is about 19.7 miles (31.7 km), with a travel time of about 00h 23m by car.
- The straight-line flight distance is about 14.6 miles (23.5 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.
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.
City in Saint Charles County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Showers And Thunderstorms
Showers And Thunderstorms
Driving Route Map
The map below follows the saved road route between Lake Saint Louis and Chesterfield.
Turn-by-Turn Driving Directions
Step-by-step road directions between Lake Saint Louis and Chesterfield.
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1
Start on Savoy Drive
71 m · 15 sec · Savoy Drive
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2
Turn left onto Rue Grand Drive
1292 ft · 49 sec · Rue Grand Drive
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3
Turn left onto Dauphine Drive
1.3 mi · 4 min · Dauphine Drive
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4
At the end of the road, turn left onto Civic Center Drive
1.3 km · 2 min · Civic Center Drive
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5
Turn slight right
82 m · 7 sec
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6
Turn slight right onto Lake Saint Louis Boulevard
1501 ft · 41 sec · Lake Saint Louis Boulevard
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7
Take the ramp left toward I 64 East, US 40 East, US 61 South
1552 ft · 20 sec
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8
Merge slight left onto Avenue of the Saints
13.6 mi · 16 min · Avenue of the Saints
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9
Take the exit slight right toward Boone's Crossing
1068 ft · 26 sec
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10
Turn right onto Boone's Crossing
549 ft · 21 sec · Boone's Crossing
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11
Turn left onto Chesterfield Airport Road
1.2 mi · 2 min · Chesterfield Airport Road
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12
Turn slight right onto Baxter Road
65 m · 8 sec
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13
Turn slight right onto Baxter Road
1397 ft · 34 sec · Baxter Road
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14
Turn left onto Old Chesterfield Road
891 ft · 40 sec · Old Chesterfield Road
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15
Turn right onto Santa Maria Drive
33 m · 5 sec · Santa Maria Drive
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16
Arrive at your destination
0 m · 1 sec · Santa Maria Drive
Car Route Details
A richer read on the saved driving route between Lake Saint Louis 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.
Avenue of the Saints
Merge slight left onto Avenue of the Saints
13.6 mi · 00h 16m
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.
Showers And Thunderstorms leaving Lake Saint Louis and Showers And Thunderstorms near Chesterfield.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Lake Saint Louis to Chesterfield?
The road trip is about 19.7 miles (31.7 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?
Weldon Spring is a useful midpoint, sitting about 9.3 miles from Lake Saint Louis and 10.4 miles from Chesterfield.
How much longer is the road route than the straight-line distance?
The direct path is about 14.6 miles (23.5 km), while the road route adds roughly 5.1 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 $2.60 one way or $5.20 round trip. Estimated CO2 is about 6.1 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Lake Saint Louis and Showers And Thunderstorms near Chesterfield.
Stop Ideas Near Weldon Spring
Useful break, food, and waypoint ideas within about 15 miles of the route midpoint.
City Hall Park
City of O'Fallon
Swingley Ridge @ Chesterfield City Hall SB
Transit and Meeting Points
Useful pickup, handoff, or rendezvous points close to Weldon Spring.
Kirkwood
Washington
Gateway Transportation Center
Alton
Flight Path Map
This map shows the direct air route between Lake Saint Louis and Chesterfield. Straight-line distance: 14.58 mi (23.47 km).
#1 Lake Saint Louis
City in Saint Charles County, Missouri, United States
| Population | 17,186 |
| Coordinates | 38.7975500, -90.7856800 |
| Altitude | 172 |
| 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: 32 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 39m |
| 40 mph (64.37 km/h) | 00h 29m |
| 50 mph (80.47 km/h) | 00h 23m |
| 60 mph (96.56 km/h) | 00h 19m |
| 70 mph (112.65 km/h) | 00h 16m |
| 80 mph (129 km/h) | 00h 14m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $2.60 | $5.20 |
| Mid-grade | $4.25 | $2.93 | $5.87 |
| Premium | $4.65 | $3.21 | $6.42 |
| Diesel | $5.30 | $3.66 | $7.32 |
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.