Traffic Predict

Best Time to Drive from Napa to Santa Rosa

Right now (9:06 pm PST): about 53 minutes via US-101 North, usually 54 at this time.

Only 34% 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 Napa to Santa Rosa by day and time you leave (local time)
Leave5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm
Mon5355595856575757565560635854545453
Tue5355615956565656555560666255545453
Wed5355626056565756555659666355535454
Thu5355616056565555555762696554545453
Fri5355575756565657576370766656545353
Sat5353535353545455555454545353535353
Sun5353535353545454555454545454545353

About this drive

On weekdays the 41-mile drive from Napa to Santa Rosa (via US-101 North) usually takes as little as 53 minutes and up to 76 minutes, when leaving around 4 pm on Fridays. The fastest times to leave are before 7 am or after 6 pm. Midday (11 am to 2 pm) it takes about 56 minutes. On weekends it is slowest around 12:30 pm on Saturdays (55 minutes).

About 18 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 23 miles surface streets (35 to 48 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Napa to central Santa Rosa 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 Napa to Santa Rosa?

On weekdays, leave before 7 am or after 6 pm. The drive usually takes about 53 minutes then, versus up to 76 minutes at the worst times.

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

The 41-mile drive usually takes 53 to 76 minutes on weekdays, depending on when you leave, and about 56 minutes midday.

When is traffic worst from Napa to Santa Rosa?

Leaving around 4 pm on Fridays is usually slowest, about 76 minutes.

Freeways on this drive

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