Best Time to Drive from Foster City to Santa Rosa

Right now (5:50 pm PDT): about 89 minutes via US-101 North, usually 80 at this time.

Only 77% 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

Minutes from Foster City to Santa Rosa by day and time you leave (local time)
Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	76	79	86	92	91	84	83	82	82	87	99	98	97	86	79	77	76
Tue	76	78	88	94	93	86	83	82	81	86	100	104	102	90	81	78	76
Wed	76	79	88	95	94	84	83	82	82	87	101	105	105	93	81	78	75
Thu	76	79	88	96	96	86	82	82	83	90	103	109	109	96	83	78	76
Fri	76	78	84	88	86	83	83	84	89	102	111	117	107	95	84	79	75
Sat	76	75	76	76	77	79	83	86	89	88	89	87	85	81	80	79	76
Sun	76	76	75	75	76	78	80	83	85	84	83	83	81	80	80	79	75

About this drive

On weekdays the 84-mile drive from Foster City to Santa Rosa (via US-101 North) usually takes as little as 75 minutes and up to 117 minutes, when leaving around 4 pm on Fridays. The fastest times to leave are before 7 am or after 7 pm. Midday (11 am to 2 pm) it takes about 84 minutes. On weekends it is slowest around 1:30 pm on Saturdays (89 minutes).

About 81 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 3 miles surface streets (4 to 7 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Foster City 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 Foster City to Santa Rosa?

On weekdays, leave before 7 am or after 7 pm. The drive usually takes about 75 minutes then, versus up to 117 minutes at the worst times.

How long does it take to drive from Foster City to Santa Rosa?

The 84-mile drive usually takes 75 to 117 minutes on weekdays, depending on when you leave, and about 84 minutes midday.

When is traffic worst from Foster City to Santa Rosa?

Leaving around 4 pm on Fridays is usually slowest, about 117 minutes.

Freeways on this drive

US-101 North in Bay Area (56 miles) · I-80 East in Bay Area (14 miles) · I-580 East in Bay Area (9 miles) · SR-92 West in Bay Area (1.3 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Santa Rosa to Foster City (return trip) · Foster City to San Jose · Foster City to San Francisco · Foster City to Oakland · Foster City to Stockton · Foster City to Fremont

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	76	79	86	92	91	84	83	82	82	87	99	98	97	86	79	77	76
Tue	76	78	88	94	93	86	83	82	81	86	100	104	102	90	81	78	76
Wed	76	79	88	95	94	84	83	82	82	87	101	105	105	93	81	78	75
Thu	76	79	88	96	96	86	82	82	83	90	103	109	109	96	83	78	76
Fri	76	78	84	88	86	83	83	84	89	102	111	117	107	95	84	79	75
Sat	76	75	76	76	77	79	83	86	89	88	89	87	85	81	80	79	76
Sun	76	76	75	75	76	78	80	83	85	84	83	83	81	80	80	79	75

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	76	79	86	92	91	84	83	82	82	87	99	98	97	86	79	77	76
Tue	76	78	88	94	93	86	83	82	81	86	100	104	102	90	81	78	76
Wed	76	79	88	95	94	84	83	82	82	87	101	105	105	93	81	78	75
Thu	76	79	88	96	96	86	82	82	83	90	103	109	109	96	83	78	76
Fri	76	78	84	88	86	83	83	84	89	102	111	117	107	95	84	79	75
Sat	76	75	76	76	77	79	83	86	89	88	89	87	85	81	80	79	76
Sun	76	76	75	75	76	78	80	83	85	84	83	83	81	80	80	79	75

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	76	79	86	92	91	84	83	82	82	87	99	98	97	86	79	77	76
Tue	76	78	88	94	93	86	83	82	81	86	100	104	102	90	81	78	76
Wed	76	79	88	95	94	84	83	82	82	87	101	105	105	93	81	78	75
Thu	76	79	88	96	96	86	82	82	83	90	103	109	109	96	83	78	76
Fri	76	78	84	88	86	83	83	84	89	102	111	117	107	95	84	79	75
Sat	76	75	76	76	77	79	83	86	89	88	89	87	85	81	80	79	76
Sun	76	76	75	75	76	78	80	83	85	84	83	83	81	80	80	79	75