Best Time to Drive from Diamond Bar to Carlsbad

Right now (5:49 pm PDT): about 98 minutes via I-5 South and SR-57 South, usually 72 at this time.

Only 59% of this drive is measured by working traffic sensors right now. The rest is estimated from nearby sensors, typical speeds and street traffic, so times can be off. Why so few sensors work.

About this drive

On weekdays the 76-mile drive from Diamond Bar to Carlsbad (via I-5 South and SR-57 South) usually takes as little as 66 minutes and up to 94 minutes, when leaving around 3:30 pm on Fridays. The fastest times to leave are before 6 am or after 6:30 pm. Midday (11 am to 2 pm) it takes about 76 minutes. On weekends it is slowest around 1 pm on Saturdays (94 minutes).

About 75 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 1.7 miles surface streets (2 to 4 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Diamond Bar to central Carlsbad along the route on the map. Starting or ending elsewhere in a big city can add or save several minutes.

Simulated from typical freeway speeds at each point of the drive for the time you would reach it, from every 5-minute reading we have recorded. We don't have sensors on surface streets yet, so the time on them is estimated from how congested the freeways around each end of the drive are at that time, in both directions: streets jam when the freeways do.

Questions

What is the best time to drive from Diamond Bar to Carlsbad?

On weekdays, leave before 6 am or after 6:30 pm. The drive usually takes about 66 minutes then, versus up to 94 minutes at the worst times.

How long does it take to drive from Diamond Bar to Carlsbad?

The 76-mile drive usually takes 66 to 94 minutes on weekdays, depending on when you leave, and about 76 minutes midday.

When is traffic worst from Diamond Bar to Carlsbad?

Leaving around 3:30 pm on Fridays is usually slowest, about 94 minutes.

Freeways on this drive

I-5 South in Orange County (40 miles) · I-5 South in San Diego (16 miles) · SR-57 South in Orange County (12 miles) · SR-57 South in Los Angeles (5 miles) · SR-60 West in Los Angeles (1.4 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow · San Diego traffic right now · San Diego traffic tomorrow

More drives

Carlsbad to Diamond Bar (return trip) · Diamond Bar to Los Angeles · Diamond Bar to Long Beach · Diamond Bar to Anaheim · Diamond Bar to Riverside · Diamond Bar to Santa Ana · Diamond Bar to Irvine · Diamond Bar to San Bernardino · Diamond Bar to Fontana · Diamond Bar to Moreno Valley · Diamond Bar to Huntington Beach · Diamond Bar to Glendale

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