How far is Marthasville, MO from Castle Point, MO?
The driving distance from Marthasville, MO to Castle Point, MO is about 52.9 miles (85.2 km), with a travel time of about 01h 06m by car.
- The straight-line flight distance is about 44.6 miles (71.7 km).
- For a round trip, plan for roughly 02h 13m 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 01h 06m.
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.
City in Saint Charles County, Missouri, United States
Route Weather Snapshot
Check the forecast at both ends before you head out.
Mostly Sunny
Mostly Sunny
Driving Route Map
The map below follows the saved road route between Marthasville and Castle Point.
Turn-by-Turn Driving Directions
Step-by-step road directions between Marthasville and Castle Point.
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1
Start on South 2nd Street
38 m · 11 sec · South 2nd Street
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2
Turn left onto East Main Street
758 ft · 26 sec · East Main Street
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3
Turn left onto One Street
1966 ft · 57 sec · One Street
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4
At the end of the road, turn left
3.4 mi · 5 min
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5
Turn left
1.2 km · 2 min
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6
Continue straight
3.5 mi · 6 min
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7
At the end of the road, turn left
3.1 mi · 4 min
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8
Continue straight
15.3 mi · 22 min
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9
Turn left
4.8 mi · 7 min
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10
Keep slight left to continue on MO 94 East, MO 364 East
4.7 mi · 6 min
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11
Take the exit slight right toward MO 94 East: Saint Charles
2.8 mi · 4 min
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12
Take the exit slight right toward I 70 East
1355 ft · 19 sec
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13
Merge slight left
3.7 mi · 5 min
-
14
Take the exit slight right toward I 270: Chicago, Memphis
872 ft · 12 sec
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15
Keep slight left to continue on I 270 North: Chicago
2556 ft · 36 sec
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16
Continue on I 270 North: Chicago
1270 ft · 18 sec
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17
Keep slight left to continue on I 270 North: Chicago
988 ft · 14 sec
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18
Merge slight left
9 mi · 11 min
-
19
Take the exit slight right toward AC: New Halls Ferry Road, Old Halls Ferry Road
1556 ft · 38 sec
-
20
Turn straight onto Pershall Road
1677 ft · 48 sec · Pershall Road
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21
Turn right onto New Halls Ferry Road
3172 ft · 58 sec · New Halls Ferry Road
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22
Continue on Halls Ferry Road
1766 ft · 35 sec · Halls Ferry Road
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23
Turn left onto Hudson Drive
1352 ft · 1 min · Hudson Drive
-
24
Turn right onto Edgefield Drive
1370 ft · 1 min · Edgefield Drive
-
25
Turn left onto Duchess Drive
1166 ft · 57 sec · Duchess Drive
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26
Turn left onto Lord Drive
87 m · 13 sec · Lord Drive
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27
Arrive at your destination
0 m · 1 sec · Lord Drive
Car Route Details
A richer read on the saved driving route between Marthasville and Castle Point.
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.
One Street
Continue straight
15.3 mi · 00h 22m
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.
Mostly Sunny leaving Marthasville and Mostly Sunny near Castle Point.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Marthasville to Castle Point?
The road trip is about 52.9 miles (85.2 km) and usually takes 01h 06m 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?
Weldon Spring is a useful midpoint, sitting about 27.7 miles from Marthasville and 25.3 miles from Castle Point.
How much longer is the road route than the straight-line distance?
The direct path is about 44.6 miles (71.7 km), while the road route adds roughly 8.3 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 4:16 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $7.05 one way or $14.10 round trip. Estimated CO2 is about 16.6 kg one way.
What should you check before leaving?
Before you leave, expect Mostly Sunny around Marthasville and Mostly Sunny near Castle Point.
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 Marthasville and Castle Point. Straight-line distance: 44.56 mi (71.72 km).
#1 Marthasville
City in Missouri
| Population | 1,198 |
| Coordinates | 38.6283800, -91.0576400 |
| Altitude | 171 |
| Country | United States |
#2 Castle Point
A census-designated place in Jefferson County, Missouri.
| Population | 90,070 |
| Coordinates | 38.7581100, -90.2481700 |
| Altitude | 152 |
| Country | United States |
End: Count Drive (-90.248701, 38.758102)
Estimated Travel Time
Distance: 85 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 01h 45m |
| 40 mph (64.37 km/h) | 01h 19m |
| 50 mph (80.47 km/h) | 01h 03m |
| 60 mph (96.56 km/h) | 00h 52m |
| 70 mph (112.65 km/h) | 00h 45m |
| 80 mph (129 km/h) | 00h 39m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.77 | $7.05 | $14.10 |
| Mid-grade | $4.25 | $7.95 | $15.91 |
| Premium | $4.65 | $8.70 | $17.41 |
| Diesel | $5.30 | $9.92 | $19.84 |
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 30, 2026
Distance to Other Cities
Planning a road trip? See the full trip guide on Trip.ovh — stops, fuel costs, weather, and departure timing.