Best Time to Drive from Santa Monica to Diamond Bar

Right now (6:20 pm PDT): about 78 minutes via SR-60 East and I-10 East, usually 63 at this time.

None 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 Monica to Diamond Bar 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	37	39	42	47	48	46	46	47	50	60	72	79	77	63	49	44	39
Tue	38	40	43	47	48	47	46	47	52	62	77	88	85	69	54	45	39
Wed	38	39	43	48	49	47	46	48	53	65	81	91	88	71	55	46	40
Thu	38	40	43	48	49	47	47	49	54	67	80	90	87	72	56	48	41
Fri	38	39	42	46	47	47	49	55	65	79	87	89	84	69	56	49	41
Sat	38	39	40	40	41	42	45	49	52	55	56	57	56	52	48	44	40
Sun	38	37	38	38	39	39	40	42	43	44	44	44	44	45	44	42	39

About this drive

On weekdays the 42-mile drive from Santa Monica to Diamond Bar (via SR-60 East and I-10 East) usually takes as little as 37 minutes and up to 92 minutes, when leaving around 4:30 pm on Wednesdays. The fastest times to leave are before 7 am or after 9 pm. Midday (11 am to 2 pm) it takes about 54 minutes. On weekends it is slowest around 3:30 pm on Saturdays (57 minutes).

About 42 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 0.6 miles surface streets (about 1 minutes), estimated from how jammed the freeways around them are at that time. Drive times are measured from downtown Santa Monica to central Diamond Bar 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 Monica to Diamond Bar?

On weekdays, leave before 7 am or after 9 pm. The drive usually takes about 37 minutes then, versus up to 92 minutes at the worst times.

How long does it take to drive from Santa Monica to Diamond Bar?

The 42-mile drive usually takes 37 to 92 minutes on weekdays, depending on when you leave, and about 54 minutes midday.

When is traffic worst from Santa Monica to Diamond Bar?

Leaving around 4:30 pm on Wednesdays is usually slowest, about 92 minutes.

Freeways on this drive

SR-60 East in Los Angeles (25 miles) · I-10 East in Los Angeles (17 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

Diamond Bar to Santa Monica (return trip) · Santa Monica to Los Angeles · Santa Monica to Pasadena · Santa Monica to Long Beach · Santa Monica to West Covina · Santa Monica to Burbank · Santa Monica to Glendale · Santa Monica to Santa Clarita · Santa Monica to Van Nuys · Santa Monica to Torrance · Santa Monica to Culver City · Santa Monica to El Monte

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	37	39	42	47	48	46	46	47	50	60	72	79	77	63	49	44	39
Tue	38	40	43	47	48	47	46	47	52	62	77	88	85	69	54	45	39
Wed	38	39	43	48	49	47	46	48	53	65	81	91	88	71	55	46	40
Thu	38	40	43	48	49	47	47	49	54	67	80	90	87	72	56	48	41
Fri	38	39	42	46	47	47	49	55	65	79	87	89	84	69	56	49	41
Sat	38	39	40	40	41	42	45	49	52	55	56	57	56	52	48	44	40
Sun	38	37	38	38	39	39	40	42	43	44	44	44	44	45	44	42	39

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	37	39	42	47	48	46	46	47	50	60	72	79	77	63	49	44	39
Tue	38	40	43	47	48	47	46	47	52	62	77	88	85	69	54	45	39
Wed	38	39	43	48	49	47	46	48	53	65	81	91	88	71	55	46	40
Thu	38	40	43	48	49	47	47	49	54	67	80	90	87	72	56	48	41
Fri	38	39	42	46	47	47	49	55	65	79	87	89	84	69	56	49	41
Sat	38	39	40	40	41	42	45	49	52	55	56	57	56	52	48	44	40
Sun	38	37	38	38	39	39	40	42	43	44	44	44	44	45	44	42	39

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	37	39	42	47	48	46	46	47	50	60	72	79	77	63	49	44	39
Tue	38	40	43	47	48	47	46	47	52	62	77	88	85	69	54	45	39
Wed	38	39	43	48	49	47	46	48	53	65	81	91	88	71	55	46	40
Thu	38	40	43	48	49	47	47	49	54	67	80	90	87	72	56	48	41
Fri	38	39	42	46	47	47	49	55	65	79	87	89	84	69	56	49	41
Sat	38	39	40	40	41	42	45	49	52	55	56	57	56	52	48	44	40
Sun	38	37	38	38	39	39	40	42	43	44	44	44	44	45	44	42	39