Traffic Predict
Best Time to Drive from Sunnyvale to Foster City
Right now (6:20 pm PDT): about 35 minutes via US-101 North, usually 30 at this time.
Only 74% 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.
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 | 21 | 22 | 24 | 27 | 26 | 25 | 23 | 23 | 23 | 24 | 27 | 28 | 30 | 28 | 23 | 22 | 22 |
| Tue | 21 | 21 | 24 | 28 | 29 | 27 | 24 | 23 | 23 | 24 | 29 | 34 | 37 | 35 | 27 | 23 | 22 |
| Wed | 21 | 21 | 24 | 28 | 27 | 26 | 24 | 24 | 23 | 25 | 30 | 33 | 37 | 35 | 27 | 23 | 22 |
| Thu | 21 | 22 | 25 | 28 | 28 | 26 | 25 | 24 | 23 | 25 | 31 | 32 | 38 | 34 | 27 | 23 | 23 |
| Fri | 21 | 21 | 23 | 26 | 25 | 24 | 24 | 24 | 24 | 26 | 29 | 29 | 30 | 29 | 25 | 23 | 22 |
| Sat | 21 | 21 | 21 | 21 | 21 | 22 | 23 | 23 | 23 | 25 | 23 | 24 | 25 | 24 | 24 | 24 | 23 |
| Sun | 21 | 21 | 21 | 21 | 21 | 22 | 22 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 23 | 22 | 22 |
About this drive
On weekdays the 23-mile drive from Sunnyvale to Foster City (via US-101 North) usually takes as little as 21 minutes and up to 38 minutes, when leaving around 5:30 pm on Tuesdays. The fastest times to leave are before 7 am or after 8 pm. Midday (11 am to 2 pm) it takes about 24 minutes. On weekends it is slowest around 2 pm on Saturdays (25 minutes).
About 20 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 3 miles surface streets (4 to 9 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Sunnyvale 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 Sunnyvale to Foster City?
On weekdays, leave before 7 am or after 8 pm. The drive usually takes about 21 minutes then, versus up to 38 minutes at the worst times.
How long does it take to drive from Sunnyvale to Foster City?
The 23-mile drive usually takes 21 to 38 minutes on weekdays, depending on when you leave, and about 24 minutes midday.
When is traffic worst from Sunnyvale to Foster City?
Leaving around 5:30 pm on Tuesdays is usually slowest, about 38 minutes.
Freeways on this drive
US-101 North in Bay Area (17 miles) · SR-85 North in Bay Area (2 miles)
Bay Area traffic right now · Bay Area traffic tomorrow
More drives
Foster City to Sunnyvale (return trip) · Sunnyvale to Stockton · Sunnyvale to Modesto · Sunnyvale to Concord · Sunnyvale to Vallejo · Sunnyvale to Fairfield · Sunnyvale to Antioch · Sunnyvale to Daly City · Sunnyvale to Vacaville · Sunnyvale to San Leandro · Sunnyvale to Livermore · Sunnyvale to Tracy