Traffic Predict

Best Time to Drive from SFO to Palo Alto

Right now (1:18 pm PDT): about 22 minutes via US-101 South, usually 23 at this time.

Only 47% 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 SFO to Palo Alto by day and time you leave (local time)
Leave5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm
Mon2021233129242323242326272927232121
Tue2021233438292423232327313128242221
Wed2021233334262323232327303128242121
Thu2021233332262323222329323228262221
Fri2021222424232323232427312825242221
Sat2020202121212223222323242527232221
Sun2120202021212222222222222323222221

About this drive

On weekdays the 21-mile drive from SFO to Palo Alto (via US-101 South) usually takes as little as 20 minutes and up to 38 minutes, when leaving around 8:30 am on Tuesdays. The fastest times to leave are before 7 am or after 8 pm. Midday (11 am to 2 pm) it takes about 23 minutes. On weekends it is slowest around 6 pm on Saturdays (27 minutes).

About 19 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 2 miles surface streets (3 to 7 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from San Francisco International Airport (SFO) (Departures) to central Palo Alto (Middlefield Road) 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 SFO to Palo Alto?

On weekdays, leave before 7 am or after 8 pm. The drive usually takes about 20 minutes then, versus up to 38 minutes at the worst times.

How long does it take to drive from SFO to Palo Alto?

The 21-mile drive usually takes 20 to 38 minutes on weekdays, depending on when you leave, and about 23 minutes midday.

When is traffic worst from SFO to Palo Alto?

Leaving around 8:30 am on Tuesdays is usually slowest, about 38 minutes.

Freeways on this drive

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