Best Time to Drive from Rialto to Costa Mesa

Right now (7:20 pm PST): about 59 minutes via SR-91 West and SR-55 South, usually 59 at this time.

Only 44% 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	57	78	88	87	80	68	68	67	66	69	74	74	73	66	57	57	55
Tue	57	82	92	90	84	72	67	67	68	73	72	73	73	66	58	56	54
Wed	56	79	88	91	83	69	67	66	67	69	74	73	76	68	58	56	54
Thu	56	79	85	85	78	68	68	66	69	69	72	73	75	67	58	56	55
Fri	56	73	78	76	73	67	69	71	71	69	72	72	72	66	61	56	54
Sat	54	57	57	59	59	61	63	65	66	66	65	66	62	61	59	57	54
Sun	54	54	55	56	58	60	63	63	65	64	63	62	61	61	59	59	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 Tuesdays. The fastest times to leave are before 5:30 am or after 7 pm. Midday (11 am to 2 pm) it takes about 68 minutes. On weekends it is slowest around 1 pm on Saturdays (66 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 20 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 68 minutes midday.

When is traffic worst from Rialto to Costa Mesa?

Leaving around 7:30 am on Tuesdays 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	57	78	88	87	80	68	68	67	66	69	74	74	73	66	57	57	55
Tue	57	82	92	90	84	72	67	67	68	73	72	73	73	66	58	56	54
Wed	56	79	88	91	83	69	67	66	67	69	74	73	76	68	58	56	54
Thu	56	79	85	85	78	68	68	66	69	69	72	73	75	67	58	56	55
Fri	56	73	78	76	73	67	69	71	71	69	72	72	72	66	61	56	54
Sat	54	57	57	59	59	61	63	65	66	66	65	66	62	61	59	57	54
Sun	54	54	55	56	58	60	63	63	65	64	63	62	61	61	59	59	54

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	78	88	87	80	68	68	67	66	69	74	74	73	66	57	57	55
Tue	57	82	92	90	84	72	67	67	68	73	72	73	73	66	58	56	54
Wed	56	79	88	91	83	69	67	66	67	69	74	73	76	68	58	56	54
Thu	56	79	85	85	78	68	68	66	69	69	72	73	75	67	58	56	55
Fri	56	73	78	76	73	67	69	71	71	69	72	72	72	66	61	56	54
Sat	54	57	57	59	59	61	63	65	66	66	65	66	62	61	59	57	54
Sun	54	54	55	56	58	60	63	63	65	64	63	62	61	61	59	59	54

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	57	78	88	87	80	68	68	67	66	69	74	74	73	66	57	57	55
Tue	57	82	92	90	84	72	67	67	68	73	72	73	73	66	58	56	54
Wed	56	79	88	91	83	69	67	66	67	69	74	73	76	68	58	56	54
Thu	56	79	85	85	78	68	68	66	69	69	72	73	75	67	58	56	55
Fri	56	73	78	76	73	67	69	71	71	69	72	72	72	66	61	56	54
Sat	54	57	57	59	59	61	63	65	66	66	65	66	62	61	59	57	54
Sun	54	54	55	56	58	60	63	63	65	64	63	62	61	61	59	59	54