How far is Saint Charles, MO from Marlborough, MO?
The driving distance from Saint Charles, MO to Marlborough, MO is about 23.3 miles (37.5 km), with a travel time of about 00h 35m by car.
- The straight-line flight distance is about 16.7 miles (26.8 km).
- For a round trip, plan for roughly 01h 11m of driving time before adding stops, traffic, or weather delays.
- A comfortable departure window is usually 7:00 AM to 7:00 PM CST.
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 35m.
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 St.
Route Weather Snapshot
Check the forecast at both ends before you head out.
Slight Chance Drizzle
Patchy Drizzle
Driving Route Map
The map below follows the saved road route between Saint Charles and Marlborough.
Turn-by-Turn Driving Directions
Step-by-step road directions between Saint Charles and Marlborough.
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1
Start on North Second Street
949 ft · 38 sec · North Second Street
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2
Turn right onto Jefferson Street
1093 ft · 45 sec · Jefferson Street
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3
Turn left onto South Fifth Street
1.1 mi · 3 min · South Fifth Street
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4
Take the ramp slight left toward I 70 East
1019 ft · 14 sec
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5
Merge slight left
8.9 mi · 11 min
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6
Take the exit slight right toward I 170 South: Clayton
1906 ft · 41 sec
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7
Merge slight left onto Inner Belt Expressway
7.1 mi · 9 min · Inner Belt Expressway
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8
Take the exit slight right toward Brentwood Boulevard North, Eager Road
1010 ft · 22 sec
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9
Keep slight left to continue on Eager Road
156 m · 11 sec
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10
Continue on Eager Road
566 ft · 14 sec
-
11
Turn left onto Eager Road
1895 ft · 49 sec · Eager Road
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12
Turn slight right
156 m · 19 sec
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13
Keep slight left
42 m · 5 sec
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14
Turn right onto South Hanley Road
1.6 mi · 4 min · South Hanley Road
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15
Continue on Laclede Station Road
2.5 mi · 4 min · Laclede Station Road
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16
Turn left onto Wimbledon Drive
868 ft · 41 sec · Wimbledon Drive
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17
Turn right onto Watson Road
46 m · 3 sec · Watson Road
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18
Arrive at your destination
0 m · 1 sec · Watson Road
Car Route Details
A richer read on the saved driving route between Saint Charles and Marlborough.
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 70 East
Merge slight left
8.94 mi · 00h 11m
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 Drizzle leaving Saint Charles and Patchy Drizzle near Marlborough.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Saint Charles to Marlborough?
The road trip is about 23.3 miles (37.5 km) and usually takes 00h 35m 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?
Bel-Ridge is a useful midpoint, sitting about 11.6 miles from Saint Charles and 11.7 miles from Marlborough.
How much longer is the road route than the straight-line distance?
The direct path is about 16.7 miles (26.8 km), while the road route adds roughly 6.6 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 CST. If you want a more comfortable same-day return, try to leave by 7:18 PM CST.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $3.09 one way or $6.19 round trip. Estimated CO2 is about 7.3 kg one way.
What should you check before leaving?
Before you leave, expect Slight Chance Drizzle around Saint Charles and Patchy Drizzle near Marlborough.
Stop Ideas Near Bel-Ridge
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 Bel-Ridge.
Gateway Transportation Center
Kirkwood
Alton
Washington
Flight Path Map
This map shows the direct air route between Saint Charles and Marlborough. Straight-line distance: 16.68 mi (26.85 km).
#1 Saint Charles
A city in St.
| Population | 71,761 |
| Coordinates | 38.7839400, -90.4812300 |
| Altitude | 147 |
| Country | United States |
#2 Marlborough
Marlborough is a place in Missouri, United States.
| Population | 0 |
| Coordinates | 38.5703300, -90.3370600 |
| Altitude | 164 |
| Country | United States |
End: Marlborough (-90.33706, 38.57033)
Estimated Travel Time
Distance: 38 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 46m |
| 40 mph (64.37 km/h) | 00h 34m |
| 50 mph (80.47 km/h) | 00h 27m |
| 60 mph (96.56 km/h) | 00h 23m |
| 70 mph (112.65 km/h) | 00h 19m |
| 80 mph (129 km/h) | 00h 17m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $3.09 | $6.19 |
| Mid-grade | $4.15 | $3.40 | $6.80 |
| Premium | $4.51 | $3.70 | $7.40 |
| Diesel | $6.00 | $4.92 | $9.83 |
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 · Nov 06, 2026