How far is it from Collinsville, IL to O'Fallon, IL?

The distance between Collinsville, IL and O'Fallon, IL is 19 km by road.

How long does it take to drive from Collinsville, IL to O'Fallon, IL?

The drive from Collinsville, IL to O'Fallon, IL takes approximately 25 min by car.

The fastest route from Collinsville, IL to O'Fallon, IL covers 19 km with a driving time of approximately 25 min.

O'Fallon, IL lies roughly to the south-east of Collinsville, IL.

Distance: 19 kmDrive time: 25 min

Driving from Collinsville, IL to O'Fallon, IL takes about 25 min via IL 159. The distance is 19 km. The straight-line distance is 12 km. Driving directions

Driving directions20 · 19 km

The return trip from O'Fallon, IL to Collinsville, IL covers roughly the same distance, 19 km.

No notable attractions were found along this route.

Distance and drive time are computed from OpenStreetMap road data with the OSRM routing engine. Updated 3 September 2026.

How far is it from Collinsville, IL to O'Fallon, IL?: The distance between Collinsville, IL and O'Fallon, IL is 19 km by road.
How long does it take to drive from Collinsville, IL to O'Fallon, IL?: The drive from Collinsville, IL to O'Fallon, IL takes approximately 25 min by car.
What is the best route from Collinsville, IL to O'Fallon, IL?: The fastest route from Collinsville, IL to O'Fallon, IL covers 19 km with a driving time of approximately 25 min.
Which direction is O'Fallon, IL from Collinsville, IL?: O'Fallon, IL lies roughly to the south-east of Collinsville, IL.