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

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

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

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

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

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

The drive from St. Clair, ON to Grimsby mainly follows 402, 401, 403. The longest single stretch is 88 km on 402.

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

Distance: 274 kmDuration: 3 h 25 min

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

Driving directions17 · 274 km

The return trip from Grimsby to St. Clair, ON 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 September 2, 2026.

How far is it from St. Clair, ON, {fromState} to Grimsby, {toState}?: The distance between St. Clair, ON, {fromState} and Grimsby, {toState} is 274 km by road.
How long does it take to drive from St. Clair, ON, {fromState} to Grimsby, {toState}?: The drive from St. Clair, ON, {fromState} to Grimsby, {toState} takes approximately 3 h 25 min by car.
What is the best route from St. Clair, ON, {fromState} to Grimsby, {toState}?: The fastest route from St. Clair, ON, {fromState} to Grimsby, {toState} covers 274 km with a driving time of approximately 3 h 25 min.
Which direction is Grimsby from St. Clair, ON?: Grimsby lies roughly to the east of St. Clair, ON.
Which roads does the route from St. Clair, ON to Grimsby follow?: The drive from St. Clair, ON to Grimsby mainly follows 402, 401, 403. The longest single stretch is 88 km on 402.
Which towns do you pass between St. Clair, ON and Grimsby?: Towns on the route from St. Clair, ON to Grimsby include Plympton-Wyoming, London, Woodstock, Hamilton, Burlington.