How far is it from Grimsby, to St. Clair, ON, ?

The distance between Grimsby, and St. Clair, ON, is 274 km by road.

How long does it take to drive from Grimsby, to St. Clair, ON, ?

The drive from Grimsby, to St. Clair, ON, takes approximately 3 h 25 min by car.

The fastest route from Grimsby, to St. Clair, ON, covers 274 km with a driving time of approximately 3 h 25 min.

St. Clair, ON lies roughly to the west of Grimsby.

The drive from Grimsby to St. Clair, ON mainly follows 403, 401, 402. The longest single stretch is 87 km on 402.

Towns on the route from Grimsby to St. Clair, ON include Burlington, Hamilton, Woodstock, London, Plympton-Wyoming.

Distance: 274 kmDuration: 3 h 25 min

Driving from Grimsby to St. Clair, ON takes about 3 h 25 min via 402. The distance is 274 km. The straight-line distance is 233 km. Driving directions

Driving directions20 · 274 km

The return trip from St. Clair, ON to Grimsby covers roughly the same distance, 274 km.

No notable attractions were found along this route.

Popular destinations close by

Distance and drive time are computed from OpenStreetMap road data with the OSRM routing engine. Updated October 1, 2026.

How far is it from Grimsby, {fromState} to St. Clair, ON, {toState}?: The distance between Grimsby, {fromState} and St. Clair, ON, {toState} is 274 km by road.
How long does it take to drive from Grimsby, {fromState} to St. Clair, ON, {toState}?: The drive from Grimsby, {fromState} to St. Clair, ON, {toState} takes approximately 3 h 25 min by car.
What is the best route from Grimsby, {fromState} to St. Clair, ON, {toState}?: The fastest route from Grimsby, {fromState} to St. Clair, ON, {toState} covers 274 km with a driving time of approximately 3 h 25 min.
Which direction is St. Clair, ON from Grimsby?: St. Clair, ON lies roughly to the west of Grimsby.
Which roads does the route from Grimsby to St. Clair, ON follow?: The drive from Grimsby to St. Clair, ON mainly follows 403, 401, 402. The longest single stretch is 87 km on 402.
Which towns do you pass between Grimsby and St. Clair, ON?: Towns on the route from Grimsby to St. Clair, ON include Burlington, Hamilton, Woodstock, London, Plympton-Wyoming.