Best Time to Drive from San Ramon to Sunnyvale

Right now (6:48 pm PDT): about 39 minutes via I-680 South, usually 45 at this time.

Only 75% 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 Sunnyvale 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	35	39	50	53	48	42	40	39	39	38	38	38	39	37	37	36	36
Tue	35	39	53	65	65	52	41	39	38	38	39	44	45	39	37	36	36
Wed	35	39	51	60	57	48	40	38	38	38	40	44	46	40	37	36	36
Thu	35	38	52	62	61	50	41	38	38	38	40	44	48	41	38	36	36
Fri	35	37	39	39	40	39	38	38	38	38	38	39	40	39	38	36	36
Sat	35	36	36	36	36	36	37	37	37	37	38	38	44	48	45	36	36
Sun	36	36	35	36	36	36	37	37	37	37	37	37	38	43	37	37	35

About this drive

On weekdays the 38-mile drive from San Ramon to Sunnyvale (via I-680 South) usually takes as little as 35 minutes and up to 67 minutes, when leaving around 8:30 am on Tuesdays. The fastest times to leave are before 6 am or after 6:30 pm. Midday (11 am to 2 pm) it takes about 38 minutes. On weekends it is slowest around 6 pm on Saturdays (48 minutes).

About 33 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 5 miles surface streets (6 to 15 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 Sunnyvale 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 Sunnyvale?

On weekdays, leave before 6 am or after 6:30 pm. The drive usually takes about 35 minutes then, versus up to 67 minutes at the worst times.

How long does it take to drive from San Ramon to Sunnyvale?

The 38-mile drive usually takes 35 to 67 minutes on weekdays, depending on when you leave, and about 38 minutes midday.

When is traffic worst from San Ramon to Sunnyvale?

Leaving around 8:30 am on Tuesdays is usually slowest, about 67 minutes.

Freeways on this drive

I-680 South in Bay Area (23 miles) · I-880 South in Bay Area (5 miles) · SR-237 West in Bay Area (5 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Sunnyvale 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

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	39	50	53	48	42	40	39	39	38	38	38	39	37	37	36	36
Tue	35	39	53	65	65	52	41	39	38	38	39	44	45	39	37	36	36
Wed	35	39	51	60	57	48	40	38	38	38	40	44	46	40	37	36	36
Thu	35	38	52	62	61	50	41	38	38	38	40	44	48	41	38	36	36
Fri	35	37	39	39	40	39	38	38	38	38	38	39	40	39	38	36	36
Sat	35	36	36	36	36	36	37	37	37	37	38	38	44	48	45	36	36
Sun	36	36	35	36	36	36	37	37	37	37	37	37	38	43	37	37	35

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	39	50	53	48	42	40	39	39	38	38	38	39	37	37	36	36
Tue	35	39	53	65	65	52	41	39	38	38	39	44	45	39	37	36	36
Wed	35	39	51	60	57	48	40	38	38	38	40	44	46	40	37	36	36
Thu	35	38	52	62	61	50	41	38	38	38	40	44	48	41	38	36	36
Fri	35	37	39	39	40	39	38	38	38	38	38	39	40	39	38	36	36
Sat	35	36	36	36	36	36	37	37	37	37	38	38	44	48	45	36	36
Sun	36	36	35	36	36	36	37	37	37	37	37	37	38	43	37	37	35

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	35	39	50	53	48	42	40	39	39	38	38	38	39	37	37	36	36
Tue	35	39	53	65	65	52	41	39	38	38	39	44	45	39	37	36	36
Wed	35	39	51	60	57	48	40	38	38	38	40	44	46	40	37	36	36
Thu	35	38	52	62	61	50	41	38	38	38	40	44	48	41	38	36	36
Fri	35	37	39	39	40	39	38	38	38	38	38	39	40	39	38	36	36
Sat	35	36	36	36	36	36	37	37	37	37	38	38	44	48	45	36	36
Sun	36	36	35	36	36	36	37	37	37	37	37	37	38	43	37	37	35