Best Time to Drive from San Mateo to Napa

Right now (8:52 pm PDT): about 67 minutes via I-80 East and US-101 North, usually 67 at this time.

Only 64% 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 66-mile drive from San Mateo to Napa (via I-80 East and US-101 North) usually takes as little as 66 minutes and up to 111 minutes, when leaving around 4:30 pm on Fridays. The fastest times to leave are before 6 am or after 7:30 pm. Midday (11 am to 2 pm) it takes about 76 minutes. On weekends it is slowest around 12:30 pm on Saturdays (79 minutes).

About 50 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 16 miles surface streets (22 to 33 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central San Mateo to central Napa 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 San Mateo to Napa?

On weekdays, leave before 6 am or after 7:30 pm. The drive usually takes about 66 minutes then, versus up to 111 minutes at the worst times.

How long does it take to drive from San Mateo to Napa?

The 66-mile drive usually takes 66 to 111 minutes on weekdays, depending on when you leave, and about 76 minutes midday.

When is traffic worst from San Mateo to Napa?

Leaving around 4:30 pm on Fridays is usually slowest, about 111 minutes.

Freeways on this drive

I-80 East in Bay Area (31 miles) · US-101 North in Bay Area (19 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Napa to San Mateo (return trip) · San Mateo to San Francisco · San Mateo to Oakland · San Mateo to San Jose · San Mateo to Palo Alto · San Mateo to Berkeley · San Mateo to Fremont · San Mateo to Walnut Creek · San Mateo to Mountain View · San Mateo to Santa Clara · San Mateo to Richmond · San Mateo to SJC

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