Best Time to Drive from Rialto to Costa Mesa

Right now (6:48 pm PDT): about 60 minutes via SR-91 West and SR-55 South, usually 57 at this time.

Only 46% 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 Rialto to Costa Mesa 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	59	77	86	85	75	65	65	64	65	67	71	71	70	63	56	57	55
Tue	58	82	92	91	82	69	64	65	66	70	69	68	69	64	56	55	54
Wed	57	80	91	92	81	69	65	64	66	66	71	71	71	65	57	56	54
Thu	58	78	86	86	76	66	65	65	67	67	71	71	72	65	57	56	54
Fri	55	69	73	72	71	66	67	68	69	67	69	70	71	64	58	55	54
Sat	54	55	56	56	58	61	65	66	67	66	64	66	62	60	57	56	54
Sun	54	54	55	55	57	59	63	63	63	62	61	59	58	58	57	58	54

About this drive

On weekdays the 57-mile drive from Rialto to Costa Mesa (via SR-91 West and SR-55 South) usually takes as little as 54 minutes and up to 93 minutes, when leaving around 7:30 am on Wednesdays. The fastest times to leave are before 5:30 am or after 7 pm. Midday (11 am to 2 pm) it takes about 66 minutes. On weekends it is slowest around 1 pm on Saturdays (67 minutes).

About 49 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 8 miles surface streets (10 to 19 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Rialto to central Costa Mesa 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 Rialto to Costa Mesa?

On weekdays, leave before 5:30 am or after 7 pm. The drive usually takes about 54 minutes then, versus up to 93 minutes at the worst times.

How long does it take to drive from Rialto to Costa Mesa?

The 57-mile drive usually takes 54 to 93 minutes on weekdays, depending on when you leave, and about 66 minutes midday.

When is traffic worst from Rialto to Costa Mesa?

Leaving around 7:30 am on Wednesdays is usually slowest, about 93 minutes.

Freeways on this drive

SR-91 West in Orange County (28 miles) · SR-55 South in Orange County (15 miles) · SR-91 West in Inland Empire (4 miles) · I-215 South in Inland Empire (1.5 miles)

Inland Empire traffic right now · Inland Empire traffic tomorrow · Orange County traffic right now · Orange County traffic tomorrow

More drives

Costa Mesa to Rialto (return trip) · Rialto to Los Angeles · Rialto to Long Beach · Rialto to Anaheim · Rialto to Riverside · Rialto to Santa Ana · Rialto to Irvine · Rialto to Moreno Valley · Rialto to Huntington Beach · Rialto to Glendale · Rialto to Santa Clarita · Rialto to Oceanside

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	59	77	86	85	75	65	65	64	65	67	71	71	70	63	56	57	55
Tue	58	82	92	91	82	69	64	65	66	70	69	68	69	64	56	55	54
Wed	57	80	91	92	81	69	65	64	66	66	71	71	71	65	57	56	54
Thu	58	78	86	86	76	66	65	65	67	67	71	71	72	65	57	56	54
Fri	55	69	73	72	71	66	67	68	69	67	69	70	71	64	58	55	54
Sat	54	55	56	56	58	61	65	66	67	66	64	66	62	60	57	56	54
Sun	54	54	55	55	57	59	63	63	63	62	61	59	58	58	57	58	54

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	59	77	86	85	75	65	65	64	65	67	71	71	70	63	56	57	55
Tue	58	82	92	91	82	69	64	65	66	70	69	68	69	64	56	55	54
Wed	57	80	91	92	81	69	65	64	66	66	71	71	71	65	57	56	54
Thu	58	78	86	86	76	66	65	65	67	67	71	71	72	65	57	56	54
Fri	55	69	73	72	71	66	67	68	69	67	69	70	71	64	58	55	54
Sat	54	55	56	56	58	61	65	66	67	66	64	66	62	60	57	56	54
Sun	54	54	55	55	57	59	63	63	63	62	61	59	58	58	57	58	54

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	59	77	86	85	75	65	65	64	65	67	71	71	70	63	56	57	55
Tue	58	82	92	91	82	69	64	65	66	70	69	68	69	64	56	55	54
Wed	57	80	91	92	81	69	65	64	66	66	71	71	71	65	57	56	54
Thu	58	78	86	86	76	66	65	65	67	67	71	71	72	65	57	56	54
Fri	55	69	73	72	71	66	67	68	69	67	69	70	71	64	58	55	54
Sat	54	55	56	56	58	61	65	66	67	66	64	66	62	60	57	56	54
Sun	54	54	55	55	57	59	63	63	63	62	61	59	58	58	57	58	54