Traffic Predict

Best Time to Drive from Santa Rosa to Napa

Right now (7:09 pm PDT): about 54 minutes via US-101 South, usually 54 at this time.

Only 36% 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.

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Typical drive time by departure time

Minutes from Santa Rosa to Napa by day and time you leave (local time)
Leave5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm
Mon5455565757565656565657575755545454
Tue5355585957555656565556595857545454
Wed5455585958565656555556595956545454
Thu5455575857555555555657625956545454
Fri5455575756565656565761675955545454
Sat5454545454545455545555555454545454
Sun5454545454545455565656555554545454

About this drive

On weekdays the 42-mile drive from Santa Rosa to Napa (via US-101 South) usually takes as little as 53 minutes and up to 68 minutes, when leaving around 3:30 pm on Fridays. The fastest times to leave are before 6:30 am or after 5 pm. Midday (11 am to 2 pm) it takes about 56 minutes. On weekends it is slowest around 3 pm on Sundays (56 minutes).

About 19 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 23 miles surface streets (35 to 46 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Santa Rosa 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 Santa Rosa to Napa?

On weekdays, leave before 6:30 am or after 5 pm. The drive usually takes about 53 minutes then, versus up to 68 minutes at the worst times.

How long does it take to drive from Santa Rosa to Napa?

The 42-mile drive usually takes 53 to 68 minutes on weekdays, depending on when you leave, and about 56 minutes midday.

When is traffic worst from Santa Rosa to Napa?

Leaving around 3:30 pm on Fridays is usually slowest, about 68 minutes.

Freeways on this drive

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