Best Time to Drive from San Ramon to Brentwood

Right now (4:50 pm PST): about 50 minutes via I-580 West and I-680 South, usually 50 at this time.

Only 38% 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 Brentwood 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	48	52	55	57	57	55	53	54	53	52	64	77	80	67	49	49	48
Tue	48	51	54	56	58	56	54	53	52	52	66	81	81	72	50	49	48
Wed	48	51	53	56	60	56	54	53	52	52	62	82	83	75	53	49	49
Thu	48	52	54	57	57	55	53	53	52	53	69	82	87	78	58	51	49
Fri	48	53	55	55	55	54	53	53	53	68	82	91	83	64	50	52	49
Sat	48	49	50	50	49	50	50	50	51	51	51	50	50	50	49	49	48
Sun	48	48	48	49	49	50	50	50	50	51	51	51	50	51	51	51	49

About this drive

On weekdays the 39-mile drive from San Ramon to Brentwood (via I-580 West and I-680 South) usually takes as little as 48 minutes and up to 91 minutes, when leaving around 4 pm on Fridays. The fastest times to leave are before 6:30 am or after 7 pm. Midday (11 am to 2 pm) it takes about 53 minutes. On weekends it is slowest around 12:30 pm on Saturdays (52 minutes).

About 17 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 22 miles surface streets (33 to 74 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 Brentwood 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 Brentwood?

On weekdays, leave before 6:30 am or after 7 pm. The drive usually takes about 48 minutes then, versus up to 91 minutes at the worst times.

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

The 39-mile drive usually takes 48 to 91 minutes on weekdays, depending on when you leave, and about 53 minutes midday.

When is traffic worst from San Ramon to Brentwood?

Leaving around 4 pm on Fridays is usually slowest, about 91 minutes.

Freeways on this drive

I-580 West in Bay Area (11 miles) · I-680 South in Bay Area (6 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Brentwood 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	48	52	55	57	57	55	53	54	53	52	64	77	80	67	49	49	48
Tue	48	51	54	56	58	56	54	53	52	52	66	81	81	72	50	49	48
Wed	48	51	53	56	60	56	54	53	52	52	62	82	83	75	53	49	49
Thu	48	52	54	57	57	55	53	53	52	53	69	82	87	78	58	51	49
Fri	48	53	55	55	55	54	53	53	53	68	82	91	83	64	50	52	49
Sat	48	49	50	50	49	50	50	50	51	51	51	50	50	50	49	49	48
Sun	48	48	48	49	49	50	50	50	50	51	51	51	50	51	51	51	49

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	52	55	57	57	55	53	54	53	52	64	77	80	67	49	49	48
Tue	48	51	54	56	58	56	54	53	52	52	66	81	81	72	50	49	48
Wed	48	51	53	56	60	56	54	53	52	52	62	82	83	75	53	49	49
Thu	48	52	54	57	57	55	53	53	52	53	69	82	87	78	58	51	49
Fri	48	53	55	55	55	54	53	53	53	68	82	91	83	64	50	52	49
Sat	48	49	50	50	49	50	50	50	51	51	51	50	50	50	49	49	48
Sun	48	48	48	49	49	50	50	50	50	51	51	51	50	51	51	51	49

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	52	55	57	57	55	53	54	53	52	64	77	80	67	49	49	48
Tue	48	51	54	56	58	56	54	53	52	52	66	81	81	72	50	49	48
Wed	48	51	53	56	60	56	54	53	52	52	62	82	83	75	53	49	49
Thu	48	52	54	57	57	55	53	53	52	53	69	82	87	78	58	51	49
Fri	48	53	55	55	55	54	53	53	53	68	82	91	83	64	50	52	49
Sat	48	49	50	50	49	50	50	50	51	51	51	50	50	50	49	49	48
Sun	48	48	48	49	49	50	50	50	50	51	51	51	50	51	51	51	49