Best Time to Drive from Santa Rosa to Brentwood

Right now (3:20 pm PST): about 98 minutes via SR-4 East and US-101 South and SR-37 East, usually 99 at this time.

Only 21% 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 Santa Rosa 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	96	101	103	109	109	106	106	106	106	106	109	112	110	105	96	95	95
Tue	96	103	105	113	110	105	106	104	105	107	113	114	115	107	98	95	95
Wed	96	102	107	112	111	106	105	105	106	107	110	114	115	108	99	96	95
Thu	96	104	106	111	110	105	104	103	104	108	112	115	115	108	100	97	95
Fri	96	101	102	106	105	106	105	105	106	109	115	117	112	103	99	96	95
Sat	95	94	95	96	96	97	98	98	98	99	100	100	99	99	97	97	95
Sun	94	95	94	95	95	97	99	100	103	103	103	100	100	100	99	98	95

About this drive

On weekdays the 82-mile drive from Santa Rosa to Brentwood (via SR-4 East and US-101 South and SR-37 East) usually takes as little as 95 minutes and up to 117 minutes, when leaving around 4 pm on Fridays. The fastest times to leave are before 6:30 am or after 6:30 pm. Midday (11 am to 2 pm) it takes about 105 minutes. On weekends it is slowest around 2 pm on Sundays (103 minutes).

About 55 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 26 miles surface streets (37 to 48 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Santa Rosa 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 Santa Rosa to Brentwood?

On weekdays, leave before 6:30 am or after 6:30 pm. The drive usually takes about 95 minutes then, versus up to 117 minutes at the worst times.

How long does it take to drive from Santa Rosa to Brentwood?

The 82-mile drive usually takes 95 to 117 minutes on weekdays, depending on when you leave, and about 105 minutes midday.

When is traffic worst from Santa Rosa to Brentwood?

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

Freeways on this drive

SR-4 East in Bay Area (21 miles) · US-101 South in Bay Area (15 miles) · SR-37 East in Bay Area (12 miles) · I-680 South in Bay Area (5 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

Brentwood to Santa Rosa (return trip) · Santa Rosa to San Francisco · Santa Rosa to Sacramento · Santa Rosa to Oakland · Santa Rosa to Hayward · Santa Rosa to Concord · Santa Rosa to Vallejo · Santa Rosa to Berkeley · Santa Rosa to Fairfield · Santa Rosa to Antioch · Santa Rosa to Richmond · Santa Rosa to Daly City

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	96	101	103	109	109	106	106	106	106	106	109	112	110	105	96	95	95
Tue	96	103	105	113	110	105	106	104	105	107	113	114	115	107	98	95	95
Wed	96	102	107	112	111	106	105	105	106	107	110	114	115	108	99	96	95
Thu	96	104	106	111	110	105	104	103	104	108	112	115	115	108	100	97	95
Fri	96	101	102	106	105	106	105	105	106	109	115	117	112	103	99	96	95
Sat	95	94	95	96	96	97	98	98	98	99	100	100	99	99	97	97	95
Sun	94	95	94	95	95	97	99	100	103	103	103	100	100	100	99	98	95

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	96	101	103	109	109	106	106	106	106	106	109	112	110	105	96	95	95
Tue	96	103	105	113	110	105	106	104	105	107	113	114	115	107	98	95	95
Wed	96	102	107	112	111	106	105	105	106	107	110	114	115	108	99	96	95
Thu	96	104	106	111	110	105	104	103	104	108	112	115	115	108	100	97	95
Fri	96	101	102	106	105	106	105	105	106	109	115	117	112	103	99	96	95
Sat	95	94	95	96	96	97	98	98	98	99	100	100	99	99	97	97	95
Sun	94	95	94	95	95	97	99	100	103	103	103	100	100	100	99	98	95

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	96	101	103	109	109	106	106	106	106	106	109	112	110	105	96	95	95
Tue	96	103	105	113	110	105	106	104	105	107	113	114	115	107	98	95	95
Wed	96	102	107	112	111	106	105	105	106	107	110	114	115	108	99	96	95
Thu	96	104	106	111	110	105	104	103	104	108	112	115	115	108	100	97	95
Fri	96	101	102	106	105	106	105	105	106	109	115	117	112	103	99	96	95
Sat	95	94	95	96	96	97	98	98	98	99	100	100	99	99	97	97	95
Sun	94	95	94	95	95	97	99	100	103	103	103	100	100	100	99	98	95