How far is Wentzville, MO from Weldon Spring, MO?
The driving distance from Wentzville, MO to Weldon Spring, MO is about 12.5 miles (20.1 km), with a travel time of about 00h 17m by car.
- The straight-line flight distance is about 11.1 miles (17.9 km).
- For a round trip, plan for roughly 00h 35m 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 17m.
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 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 Wentzville and Weldon Spring.
Turn-by-Turn Driving Directions
Step-by-step road directions between Wentzville and Weldon Spring.
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1
Start on East Allen Street
12 m · 4 sec · East Allen Street
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2
Turn right onto North Linn Avenue
65 m · 11 sec · North Linn Avenue
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3
Turn right onto East Pearce Boulevard
2469 ft · 1 min · East Pearce Boulevard
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4
Turn slight right
106 m · 9 sec
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5
Turn slight right onto Luetkenhaus Boulevard
152 m · 14 sec · Luetkenhaus Boulevard
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6
Take the ramp straight toward US 61 South, I 70, US 40
50 m · 2 sec
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7
Keep slight left to continue on US 61 South
772 ft · 11 sec
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8
Merge slight left onto Avenue of the Saints
9.8 mi · 11 min · Avenue of the Saints
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9
Take the exit slight right toward MO K, MO 94: O'Fallon, St Charles, Defiance, Lewis and Clark National Historic Trail
2028 ft · 35 sec
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10
Keep slight left to continue on MO K: O'Fallon
38 m · 9 sec
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11
Turn left
1800 ft · 33 sec
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12
Turn right onto Technology Drive
1895 ft · 1 min · Technology Drive
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13
Enter the roundabout and take exit 1 toward Technology Drive
34 m · 5 sec · Technology Drive
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14
Exit the roundabout onto Technology Drive
570 ft · 20 sec · Technology Drive
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15
Enter the roundabout and take exit 2 toward Technology Drive
35 m · 4 sec · Technology Drive
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16
Exit the roundabout onto Technology Drive
2209 ft · 54 sec · Technology Drive
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17
Enter the roundabout and take exit 1 toward Weldon Spring Road
14 m · 1 sec · Weldon Spring Road
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18
Exit the roundabout onto Weldon Spring Road
871 ft · 31 sec · Weldon Spring Road
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19
Arrive at your destination
0 m · 1 sec · Old 94 South
Car Route Details
A richer read on the saved driving route between Wentzville and Weldon Spring.
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
9.77 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.
Showers And Thunderstorms leaving Wentzville and Showers And Thunderstorms near Weldon Spring.
Trip Questions
Direct answers travelers usually want before committing to the drive.
How long does it take to drive from Wentzville to Weldon Spring?
The road trip is about 12.5 miles (20.1 km) and usually takes 00h 17m 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?
Dardenne Prairie is a useful midpoint, sitting about 6.2 miles from Wentzville and 6.3 miles from Weldon Spring.
How much longer is the road route than the straight-line distance?
The direct path is about 11.1 miles (17.9 km), while the road route adds roughly 1.4 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 7:54 PM CDT.
How much will gas cost for this route?
Using about 28.3 MPG, regular gas is estimated at $1.75 one way or $3.50 round trip. Estimated CO2 is about 3.9 kg one way.
What should you check before leaving?
Before you leave, expect Showers And Thunderstorms around Wentzville and Showers And Thunderstorms near Weldon Spring.
Stop Ideas Near Dardenne Prairie
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 Dardenne Prairie.
Washington
Kirkwood
Gateway Transportation Center
Alton
Flight Path Map
This map shows the direct air route between Wentzville and Weldon Spring. Straight-line distance: 11.12 mi (17.89 km).
#1 Wentzville
A city in St.
| Population | 43,109 |
| Coordinates | 38.8114400, -90.8529100 |
| Altitude | 190 |
| Country | United States |
#2 Weldon Spring
City in Saint Charles County, Missouri, United States
| Population | 5,546 |
| Coordinates | 38.7133900, -90.6892900 |
| Altitude | 165 |
| Country | United States |
End: Weldon Spring (-90.68929, 38.71339)
Estimated Travel Time
Distance: 20 km by road
| Speed | Time |
|---|---|
| 30 mph (48.3 km/h) | 00h 24m |
| 40 mph (64.37 km/h) | 00h 18m |
| 50 mph (80.47 km/h) | 00h 14m |
| 60 mph (96.56 km/h) | 00h 12m |
| 70 mph (112.65 km/h) | 00h 10m |
| 80 mph (129 km/h) | 00h 09m |
Fuel, Round Trip and CO2
Estimated fuel cost and emissions for this route.
| Fuel | $/gal | One way | Round trip |
|---|---|---|---|
| Regular gas | $3.98 | $1.75 | $3.50 |
| Mid-grade | $4.34 | $1.91 | $3.82 |
| Premium | $4.71 | $2.07 | $4.14 |
| Diesel | $5.99 | $2.63 | $5.27 |
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 · Oct 15, 2026