Traffic Predict
Best Time to Drive from San Francisco to Foster City
Right now (5:47 pm PDT): about 39 minutes via US-101 South, usually 27 at this time.
Typical drive time by departure time
| Leave | 5am | 6am | 7am | 8am | 9am | 10am | 11am | 12pm | 1pm | 2pm | 3pm | 4pm | 5pm | 6pm | 7pm | 8pm | 9pm |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mon | 20 | 21 | 22 | 25 | 27 | 24 | 23 | 24 | 23 | 23 | 26 | 25 | 25 | 24 | 23 | 22 | 21 |
| Tue | 20 | 20 | 22 | 26 | 28 | 24 | 23 | 22 | 22 | 23 | 27 | 29 | 31 | 27 | 23 | 21 | 21 |
| Wed | 20 | 20 | 22 | 26 | 26 | 23 | 22 | 22 | 22 | 23 | 26 | 30 | 31 | 27 | 23 | 22 | 21 |
| Thu | 20 | 20 | 22 | 26 | 26 | 25 | 23 | 22 | 22 | 24 | 29 | 30 | 32 | 28 | 23 | 22 | 21 |
| Fri | 20 | 20 | 21 | 23 | 22 | 22 | 22 | 22 | 23 | 23 | 27 | 27 | 25 | 24 | 22 | 21 | 20 |
| Sat | 20 | 20 | 20 | 20 | 21 | 21 | 22 | 23 | 23 | 23 | 23 | 23 | 24 | 24 | 22 | 22 | 21 |
| Sun | 20 | 20 | 20 | 20 | 20 | 21 | 22 | 22 | 22 | 22 | 22 | 22 | 22 | 23 | 22 | 22 | 21 |
About this drive
On weekdays the 22-mile drive from San Francisco to Foster City (via US-101 South) usually takes as little as 20 minutes and up to 32 minutes, when leaving around 5 pm on Thursdays. 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 4:30 pm on Saturdays (24 minutes).
About 21 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 0.8 miles surface streets (1 to 2 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from downtown San Francisco to central Foster City 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 Francisco to Foster City?
On weekdays, leave before 7 am or after 8 pm. The drive usually takes about 20 minutes then, versus up to 32 minutes at the worst times.
How long does it take to drive from San Francisco to Foster City?
The 22-mile drive usually takes 20 to 32 minutes on weekdays, depending on when you leave, and about 23 minutes midday.
When is traffic worst from San Francisco to Foster City?
Leaving around 5 pm on Thursdays is usually slowest, about 32 minutes.
Freeways on this drive
US-101 South in Bay Area (20 miles) · SR-92 East in Bay Area (1.5 miles)
Bay Area traffic right now · Bay Area traffic tomorrow
More drives
Foster City to San Francisco (return trip) · San Francisco to San Jose · San Francisco to Palo Alto · San Francisco to Berkeley · San Francisco to Fremont · San Francisco to Walnut Creek · San Francisco to San Mateo · San Francisco to Hayward · San Francisco to Mountain View · San Francisco to Pleasanton · San Francisco to Santa Clara · San Francisco to Richmond