Best Time to Drive from San Diego to San Marcos

Right now (6:24 pm PDT): about 46 minutes via I-15 North and SR-163 North, usually 35 at this time.

Only 61% 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.

On weekdays the 36-mile drive from San Diego to San Marcos (via I-15 North and SR-163 North) usually takes as little as 32 minutes and up to 61 minutes, when leaving around 4 pm on Wednesdays. The fastest times to leave are before 7 am or after 6:30 pm. Midday (11 am to 2 pm) it takes about 36 minutes. On weekends it is slowest around 3:30 pm on Saturdays (35 minutes).

⇄ Reverse trip: San Marcos to San Diego

Freeway, about 31 miles: times follow typical and live traffic from our sensors. Surface streets, about 4 miles: 6 to 11 minutes on weekdays, estimated from how jammed the freeways around them are at that time (we don't have street sensors yet). Drive times are measured from downtown San Diego to central San Marcos along the route shown. Starting or ending elsewhere in a big city can add or save several minutes.

Typical drive time by departure time

Minutes from San Diego to San Marcos 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	33	33	39	42	36	35	35	35	35	36	42	50	46	35	33	33	33
Tue	33	33	44	47	37	36	35	35	35	36	47	55	53	40	33	33	33
Wed	33	33	42	43	37	35	35	35	35	37	51	61	59	42	34	33	33
Thu	33	33	47	45	36	35	35	36	35	36	47	56	51	39	34	33	33
Fri	33	34	38	40	35	35	35	36	36	41	49	49	41	35	34	33	33
Sat	33	33	33	33	34	34	34	34	34	34	34	34	34	33	33	34	33
Sun	33	33	33	33	33	33	34	34	34	34	34	34	34	33	34	34	33

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 Diego to San Marcos?

On weekdays, leave before 7 am or after 6:30 pm. The drive usually takes about 32 minutes then, versus up to 61 minutes at the worst times.

How long does it take to drive from San Diego to San Marcos?

The 36-mile drive usually takes 32 to 61 minutes on weekdays, depending on when you leave, and about 36 minutes midday.

When is traffic worst from San Diego to San Marcos?

Leaving around 4 pm on Wednesdays is usually slowest, about 61 minutes.

Estimate this drive for any day and departure time →

Freeways on this drive

I-15 North in San Diego (19 miles) · SR-163 North in San Diego (9 miles) · SR-78 West in San Diego (3 miles)

San Diego traffic right now · San Diego traffic tomorrow

More drives

San Marcos to San Diego (return trip) · San Diego to Escondido · San Diego to Oceanside · San Diego to El Cajon · San Diego to Carlsbad · San Diego to Los Angeles · San Diego to Irvine · San Diego to Temecula · San Diego to LAX · San Diego to Riverside · San Diego to Chula Vista · San Diego to La Jolla

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	33	33	39	42	36	35	35	35	35	36	42	50	46	35	33	33	33
Tue	33	33	44	47	37	36	35	35	35	36	47	55	53	40	33	33	33
Wed	33	33	42	43	37	35	35	35	35	37	51	61	59	42	34	33	33
Thu	33	33	47	45	36	35	35	36	35	36	47	56	51	39	34	33	33
Fri	33	34	38	40	35	35	35	36	36	41	49	49	41	35	34	33	33
Sat	33	33	33	33	34	34	34	34	34	34	34	34	34	33	33	34	33
Sun	33	33	33	33	33	33	34	34	34	34	34	34	34	33	34	34	33

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	33	33	39	42	36	35	35	35	35	36	42	50	46	35	33	33	33
Tue	33	33	44	47	37	36	35	35	35	36	47	55	53	40	33	33	33
Wed	33	33	42	43	37	35	35	35	35	37	51	61	59	42	34	33	33
Thu	33	33	47	45	36	35	35	36	35	36	47	56	51	39	34	33	33
Fri	33	34	38	40	35	35	35	36	36	41	49	49	41	35	34	33	33
Sat	33	33	33	33	34	34	34	34	34	34	34	34	34	33	33	34	33
Sun	33	33	33	33	33	33	34	34	34	34	34	34	34	33	34	34	33

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	33	33	39	42	36	35	35	35	35	36	42	50	46	35	33	33	33
Tue	33	33	44	47	37	36	35	35	35	36	47	55	53	40	33	33	33
Wed	33	33	42	43	37	35	35	35	35	37	51	61	59	42	34	33	33
Thu	33	33	47	45	36	35	35	36	35	36	47	56	51	39	34	33	33
Fri	33	34	38	40	35	35	35	36	36	41	49	49	41	35	34	33	33
Sat	33	33	33	33	34	34	34	34	34	34	34	34	34	33	33	34	33
Sun	33	33	33	33	33	33	34	34	34	34	34	34	34	33	34	34	33