Best Time to Drive from Napa to San Ramon

Right now (5:50 pm PDT): about 49 minutes via I-680 South, usually 50 at this time.

Only 76% 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 Napa to San Ramon 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	51	62	63	58	54	54	54	53	52	51	49	48	46	46	46	45
Tue	45	51	65	66	60	54	53	52	52	52	51	51	50	46	46	46	45
Wed	45	51	63	64	57	53	53	53	52	51	51	51	50	47	46	46	45
Thu	45	51	63	65	59	53	53	53	52	52	52	51	51	47	46	46	46
Fri	45	49	53	59	52	52	52	52	52	53	53	52	51	47	46	46	45
Sat	46	46	46	46	47	48	50	51	50	50	50	49	49	48	47	47	45
Sun	45	45	46	45	46	47	49	51	51	52	52	51	50	50	48	48	46

About this drive

On weekdays the 48-mile drive from Napa to San Ramon (via I-680 South) usually takes as little as 45 minutes and up to 66 minutes, when leaving around 7:30 am on Tuesdays. The fastest times to leave are before 6 am or after 5:30 pm. Midday (11 am to 2 pm) it takes about 52 minutes. On weekends it is slowest around 2:30 pm on Sundays (52 minutes).

About 40 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 8 miles surface streets (10 to 20 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Napa to central San Ramon 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 Napa to San Ramon?

On weekdays, leave before 6 am or after 5:30 pm. The drive usually takes about 45 minutes then, versus up to 66 minutes at the worst times.

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

The 48-mile drive usually takes 45 to 66 minutes on weekdays, depending on when you leave, and about 52 minutes midday.

When is traffic worst from Napa to San Ramon?

Leaving around 7:30 am on Tuesdays is usually slowest, about 66 minutes.

Freeways on this drive

I-680 South in Bay Area (33 miles) · SR-12 East in Bay Area (6 miles) · I-80 East in Bay Area (1.2 miles)

Bay Area traffic right now · Bay Area traffic tomorrow

More drives

San Ramon to Napa (return trip) · Napa to San Jose · Napa to San Francisco · Napa to Sacramento · Napa to Oakland · Napa to Stockton · Napa to Fremont · Napa to Santa Rosa · Napa to Elk Grove · Napa to Hayward · Napa to Sunnyvale · Napa to Roseville

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	51	62	63	58	54	54	54	53	52	51	49	48	46	46	46	45
Tue	45	51	65	66	60	54	53	52	52	52	51	51	50	46	46	46	45
Wed	45	51	63	64	57	53	53	53	52	51	51	51	50	47	46	46	45
Thu	45	51	63	65	59	53	53	53	52	52	52	51	51	47	46	46	46
Fri	45	49	53	59	52	52	52	52	52	53	53	52	51	47	46	46	45
Sat	46	46	46	46	47	48	50	51	50	50	50	49	49	48	47	47	45
Sun	45	45	46	45	46	47	49	51	51	52	52	51	50	50	48	48	46

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

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