Best Time to Drive from Koreatown to Diamond Bar

Right now (6:49 pm PDT): about 52 minutes via SR-60 East and US-101 South, usually 37 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 Koreatown 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	30	34	38	39	44	40	40	38	38	41	42	60	61	41	40	43	33
Tue	30	34	37	37	42	42	41	39	39	45	67	75	68	43	38	38	32
Wed	30	34	37	37	39	41	40	39	39	40	53	70	63	44	37	38	32
Thu	30	36	37	38	40	40	41	39	39	45	70	73	61	42	37	40	34
Fri	30	34	40	41	42	40	40	40	40	45	52	45	40	39	38	42	32
Sat	32	31	34	38	39	40	40	40	41	40	40	41	40	41	43	43	33
Sun	32	32	32	33	37	41	43	43	43	42	42	45	46	43	44	45	35

About this drive

On weekdays the 34-mile drive from Koreatown to Diamond Bar (via SR-60 East and US-101 South) usually takes as little as 30 minutes and up to 76 minutes, when leaving around 4:30 pm on Tuesdays. The fastest times to leave are before 6 am or after 9 pm. Midday (11 am to 2 pm) it takes about 40 minutes. On weekends it is slowest around 4:30 pm on Sundays (47 minutes).

About 31 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 2 miles surface streets (3 to 9 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Koreatown 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 Koreatown to Diamond Bar?

On weekdays, leave before 6 am or after 9 pm. The drive usually takes about 30 minutes then, versus up to 76 minutes at the worst times.

How long does it take to drive from Koreatown to Diamond Bar?

The 34-mile drive usually takes 30 to 76 minutes on weekdays, depending on when you leave, and about 40 minutes midday.

When is traffic worst from Koreatown to Diamond Bar?

Leaving around 4:30 pm on Tuesdays is usually slowest, about 76 minutes.

Freeways on this drive

SR-60 East in Los Angeles (25 miles) · US-101 South in Los Angeles (6 miles)

Los Angeles traffic right now · Los Angeles traffic tomorrow

More drives

Diamond Bar to Koreatown (return trip) · Koreatown to Fontana · Koreatown to Moreno Valley · Koreatown to Lancaster · Koreatown to Palmdale · Koreatown to Valencia · Koreatown to Fullerton · Koreatown to East Los Angeles · Koreatown to Victorville · Koreatown to Costa Mesa · Koreatown to Norwalk · Koreatown to Universal 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	30	34	38	39	44	40	40	38	38	41	42	60	61	41	40	43	33
Tue	30	34	37	37	42	42	41	39	39	45	67	75	68	43	38	38	32
Wed	30	34	37	37	39	41	40	39	39	40	53	70	63	44	37	38	32
Thu	30	36	37	38	40	40	41	39	39	45	70	73	61	42	37	40	34
Fri	30	34	40	41	42	40	40	40	40	45	52	45	40	39	38	42	32
Sat	32	31	34	38	39	40	40	40	41	40	40	41	40	41	43	43	33
Sun	32	32	32	33	37	41	43	43	43	42	42	45	46	43	44	45	35

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	30	34	38	39	44	40	40	38	38	41	42	60	61	41	40	43	33
Tue	30	34	37	37	42	42	41	39	39	45	67	75	68	43	38	38	32
Wed	30	34	37	37	39	41	40	39	39	40	53	70	63	44	37	38	32
Thu	30	36	37	38	40	40	41	39	39	45	70	73	61	42	37	40	34
Fri	30	34	40	41	42	40	40	40	40	45	52	45	40	39	38	42	32
Sat	32	31	34	38	39	40	40	40	41	40	40	41	40	41	43	43	33
Sun	32	32	32	33	37	41	43	43	43	42	42	45	46	43	44	45	35

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	30	34	38	39	44	40	40	38	38	41	42	60	61	41	40	43	33
Tue	30	34	37	37	42	42	41	39	39	45	67	75	68	43	38	38	32
Wed	30	34	37	37	39	41	40	39	39	40	53	70	63	44	37	38	32
Thu	30	36	37	38	40	40	41	39	39	45	70	73	61	42	37	40	34
Fri	30	34	40	41	42	40	40	40	40	45	52	45	40	39	38	42	32
Sat	32	31	34	38	39	40	40	40	41	40	40	41	40	41	43	43	33
Sun	32	32	32	33	37	41	43	43	43	42	42	45	46	43	44	45	35