Best Time to Drive from Napa to Tracy

Right now (3:20 pm PST): about 87 minutes via SR-4 East and I-680 South, usually 89 at this time.

Only 35% 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 Tracy 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	85	96	102	106	107	103	103	100	100	100	98	95	93	89	86	85	85
Tue	85	98	105	106	104	102	100	97	97	98	99	97	97	90	87	85	85
Wed	85	97	106	105	105	102	100	98	99	99	100	98	98	92	87	86	86
Thu	85	99	104	106	103	100	98	97	97	98	101	97	96	91	91	86	85
Fri	85	97	98	102	98	101	98	98	98	100	102	100	96	89	87	86	86
Sat	85	84	85	86	86	88	90	90	90	89	89	89	89	88	88	87	86
Sun	84	84	84	84	86	88	88	91	92	91	91	92	89	91	90	89	85

About this drive

On weekdays the 77-mile drive from Napa to Tracy (via SR-4 East and I-680 South) usually takes as little as 84 minutes and up to 108 minutes, when leaving around 7:30 am on Thursdays. The fastest times to leave are before 6 am or after 6 pm. Midday (11 am to 2 pm) it takes about 99 minutes. On weekends it is slowest around 1 pm on Sundays (92 minutes).

About 47 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 29 miles surface streets (42 to 62 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Napa to central Tracy 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 Tracy?

On weekdays, leave before 6 am or after 6 pm. The drive usually takes about 84 minutes then, versus up to 108 minutes at the worst times.

How long does it take to drive from Napa to Tracy?

The 77-mile drive usually takes 84 to 108 minutes on weekdays, depending on when you leave, and about 99 minutes midday.

When is traffic worst from Napa to Tracy?

Leaving around 7:30 am on Thursdays is usually slowest, about 108 minutes.

Freeways on this drive

SR-4 East in Bay Area (22 miles) · I-680 South in Bay Area (18 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

Tracy 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	85	96	102	106	107	103	103	100	100	100	98	95	93	89	86	85	85
Tue	85	98	105	106	104	102	100	97	97	98	99	97	97	90	87	85	85
Wed	85	97	106	105	105	102	100	98	99	99	100	98	98	92	87	86	86
Thu	85	99	104	106	103	100	98	97	97	98	101	97	96	91	91	86	85
Fri	85	97	98	102	98	101	98	98	98	100	102	100	96	89	87	86	86
Sat	85	84	85	86	86	88	90	90	90	89	89	89	89	88	88	87	86
Sun	84	84	84	84	86	88	88	91	92	91	91	92	89	91	90	89	85

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	85	96	102	106	107	103	103	100	100	100	98	95	93	89	86	85	85
Tue	85	98	105	106	104	102	100	97	97	98	99	97	97	90	87	85	85
Wed	85	97	106	105	105	102	100	98	99	99	100	98	98	92	87	86	86
Thu	85	99	104	106	103	100	98	97	97	98	101	97	96	91	91	86	85
Fri	85	97	98	102	98	101	98	98	98	100	102	100	96	89	87	86	86
Sat	85	84	85	86	86	88	90	90	90	89	89	89	89	88	88	87	86
Sun	84	84	84	84	86	88	88	91	92	91	91	92	89	91	90	89	85

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	85	96	102	106	107	103	103	100	100	100	98	95	93	89	86	85	85
Tue	85	98	105	106	104	102	100	97	97	98	99	97	97	90	87	85	85
Wed	85	97	106	105	105	102	100	98	99	99	100	98	98	92	87	86	86
Thu	85	99	104	106	103	100	98	97	97	98	101	97	96	91	91	86	85
Fri	85	97	98	102	98	101	98	98	98	100	102	100	96	89	87	86	86
Sat	85	84	85	86	86	88	90	90	90	89	89	89	89	88	88	87	86
Sun	84	84	84	84	86	88	88	91	92	91	91	92	89	91	90	89	85