Best Time to Drive from San Ramon to South San Francisco

Right now (5:50 pm PDT): about 68 minutes via US-101 North and SR-92 West, usually 63 at this time.

Only 36% 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 San Ramon to South San Francisco 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	45	50	68	70	60	55	53	52	52	57	62	62	61	59	52	47	45
Tue	45	52	76	80	68	59	55	51	52	57	61	64	65	62	55	51	46
Wed	45	51	74	77	63	58	55	52	52	58	62	65	66	62	56	50	46
Thu	45	51	78	80	65	58	54	53	53	57	62	65	66	63	57	52	46
Fri	45	49	57	58	54	52	52	52	55	59	63	63	64	62	58	51	45
Sat	46	46	46	46	46	48	52	55	53	53	55	54	56	56	51	48	46
Sun	45	46	46	46	46	46	47	49	49	50	51	50	50	51	49	48	46

About this drive

On weekdays the 37-mile drive from San Ramon to South San Francisco (via US-101 North and SR-92 West) usually takes as little as 45 minutes and up to 82 minutes, when leaving around 7:30 am on Tuesdays. The fastest times to leave are before 6 am or after 8:30 pm. Midday (11 am to 2 pm) it takes about 54 minutes. On weekends it is slowest around 5:30 pm on Saturdays (57 minutes).

About 19 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 18 miles surface streets (29 to 53 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central San Ramon to central South San Francisco 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 Ramon to South San Francisco?

On weekdays, leave before 6 am or after 8:30 pm. The drive usually takes about 45 minutes then, versus up to 82 minutes at the worst times.

How long does it take to drive from San Ramon to South San Francisco?

The 37-mile drive usually takes 45 to 82 minutes on weekdays, depending on when you leave, and about 54 minutes midday.

When is traffic worst from San Ramon to South San Francisco?

Leaving around 7:30 am on Tuesdays is usually slowest, about 82 minutes.

Freeways on this drive

US-101 North in Bay Area (10 miles) · SR-92 West in Bay Area (9 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

South San Francisco to San Ramon (return trip) · San Ramon to San Jose · San Ramon to San Francisco · San Ramon to Sacramento · San Ramon to Oakland · San Ramon to Stockton · San Ramon to Fremont · San Ramon to Modesto · San Ramon to Santa Rosa · San Ramon to Elk Grove · San Ramon to Sunnyvale · San Ramon to Concord

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	45	50	68	70	60	55	53	52	52	57	62	62	61	59	52	47	45
Tue	45	52	76	80	68	59	55	51	52	57	61	64	65	62	55	51	46
Wed	45	51	74	77	63	58	55	52	52	58	62	65	66	62	56	50	46
Thu	45	51	78	80	65	58	54	53	53	57	62	65	66	63	57	52	46
Fri	45	49	57	58	54	52	52	52	55	59	63	63	64	62	58	51	45
Sat	46	46	46	46	46	48	52	55	53	53	55	54	56	56	51	48	46
Sun	45	46	46	46	46	46	47	49	49	50	51	50	50	51	49	48	46

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	45	50	68	70	60	55	53	52	52	57	62	62	61	59	52	47	45
Tue	45	52	76	80	68	59	55	51	52	57	61	64	65	62	55	51	46
Wed	45	51	74	77	63	58	55	52	52	58	62	65	66	62	56	50	46
Thu	45	51	78	80	65	58	54	53	53	57	62	65	66	63	57	52	46
Fri	45	49	57	58	54	52	52	52	55	59	63	63	64	62	58	51	45
Sat	46	46	46	46	46	48	52	55	53	53	55	54	56	56	51	48	46
Sun	45	46	46	46	46	46	47	49	49	50	51	50	50	51	49	48	46

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	45	50	68	70	60	55	53	52	52	57	62	62	61	59	52	47	45
Tue	45	52	76	80	68	59	55	51	52	57	61	64	65	62	55	51	46
Wed	45	51	74	77	63	58	55	52	52	58	62	65	66	62	56	50	46
Thu	45	51	78	80	65	58	54	53	53	57	62	65	66	63	57	52	46
Fri	45	49	57	58	54	52	52	52	55	59	63	63	64	62	58	51	45
Sat	46	46	46	46	46	48	52	55	53	53	55	54	56	56	51	48	46
Sun	45	46	46	46	46	46	47	49	49	50	51	50	50	51	49	48	46