How far is it from Diamond Bar, CA to Westminster, CA?

The distance between Diamond Bar, CA and Westminster, CA is 42 km by road.

How long does it take to drive from Diamond Bar, CA to Westminster, CA?

The drive from Diamond Bar, CA to Westminster, CA takes approximately 35 min by car.

The fastest route from Diamond Bar, CA to Westminster, CA covers 42 km with a driving time of approximately 35 min.

Westminster, CA lies roughly to the south-west of Diamond Bar, CA.

Distance: 42 kmDrive time: 35 min

Driving from Diamond Bar, CA to Westminster, CA takes about 35 min via CA 57. The distance is 42 km. The straight-line distance is 32 km. Driving directions

Driving directions13 · 42 km

The return trip from Westminster, CA to Diamond Bar, CA covers roughly the same distance, 42 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 1 October 2026.

How far is it from Diamond Bar, CA to Westminster, CA?: The distance between Diamond Bar, CA and Westminster, CA is 42 km by road.
How long does it take to drive from Diamond Bar, CA to Westminster, CA?: The drive from Diamond Bar, CA to Westminster, CA takes approximately 35 min by car.
What is the best route from Diamond Bar, CA to Westminster, CA?: The fastest route from Diamond Bar, CA to Westminster, CA covers 42 km with a driving time of approximately 35 min.
Which direction is Westminster, CA from Diamond Bar, CA?: Westminster, CA lies roughly to the south-west of Diamond Bar, CA.