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Distance from St Clair to Ballwin

Driving Distance
39.7 mi 63.9 km
Flying Distance
29.2 mi 47.0 km

Route Information

The driving distance from St Clair, Missouri to Ballwin, Missouri is 39.7 mi (63.9 km)

The straight-line (air) distance is 29.2 mi (47.0 km)

The estimated flight time is 0 hr 4 min

The estimated travel time by road is 43 minutes

Traveling mixed highways and local roads, moderate in a northeast direction. Average speeds around 51 mph.

Location Details

Origin:

St Clair
Place St Clair
State/Province Missouri
Country US
Latitude 38.347558
Longitude -90.983403
GPS 38.347558° N, 90.983403° W
Local Time 7:58 AM
Timezone America/Chicago

Destination:

Ballwin
Place Ballwin
State/Province Missouri
Country US
Latitude 38.595053
Longitude -90.546234
GPS 38.595053° N, 90.546234° W
Local Time 7:58 AM
Timezone America/Chicago

Journey Summary

Traveling from St Clair, Missouri to Ballwin, Missouri covers 39.7 mi (63.9 km) in a northeast direction. This mixed highways and local roads, moderate route typically takes 43 minutes under normal conditions.

Drivers have 2 route options between these locations (33.5-39.7 miles / 54-64 km). The primary route shown here saves 2 minutes compared to alternatives.

The route features scenic views along the way. with average speeds around 51 mph (82 km/h).

Available Routes

I-44 E
39.7 mi 43 minutes
Shortest
I-44 E and MO-100 E/Old Rte 66 E
33.5 mi 42 minutes
Fastest

How is the distance calculated?

Driving distances are based on actual road data. We use advanced routing algorithms that consider traffic, tolls, highways, and local streets. For air distances (as the crow flies), we use the Vincenty formula. It's a precise method that accounts for the Earth's shape and provides accuracy up to 0.5 mm.

When multiple route options exist, we display both the shortest and fastest paths. Travel times are estimated based on typical speeds for each road type, though actual times may vary with traffic and weather conditions. All distances are shown in both miles and kilometers for convenience.