Best Time to Drive from Lake Forest to Rancho Cucamonga

Right now (7:09 pm PDT): about 65 minutes via SR-241 North and SR-91 East, usually 55 at this time.

Only 11% 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 Lake Forest to Rancho Cucamonga 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	48	50	61	54	55	53	55	53	55	60	64	67	65	55	55	55	49
Tue	48	52	64	57	54	55	55	53	55	61	69	68	66	58	57	54	49
Wed	48	51	67	58	54	56	55	53	55	61	63	61	68	57	54	54	49
Thu	48	51	64	56	53	52	52	52	57	60	68	65	65	57	55	55	49
Fri	48	49	50	53	53	53	56	60	66	68	70	66	65	56	55	54	49
Sat	48	49	49	49	50	51	56	53	54	54	62	57	61	58	53	52	49
Sun	48	49	49	49	49	49	50	51	53	50	50	51	50	50	50	51	48

About this drive

On weekdays the 42-mile drive from Lake Forest to Rancho Cucamonga (via SR-241 North and SR-91 East) usually takes as little as 48 minutes and up to 70 minutes, when leaving around 3 pm on Fridays. The fastest times to leave are before 6:30 am or after 8:30 pm. Midday (11 am to 2 pm) it takes about 56 minutes. On weekends it is slowest around 4:30 pm on Saturdays (62 minutes).

About 23 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 19 miles surface streets (27 to 35 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Lake Forest to central Rancho Cucamonga 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 Lake Forest to Rancho Cucamonga?

On weekdays, leave before 6:30 am or after 8:30 pm. The drive usually takes about 48 minutes then, versus up to 70 minutes at the worst times.

How long does it take to drive from Lake Forest to Rancho Cucamonga?

The 42-mile drive usually takes 48 to 70 minutes on weekdays, depending on when you leave, and about 56 minutes midday.

When is traffic worst from Lake Forest to Rancho Cucamonga?

Leaving around 3 pm on Fridays is usually slowest, about 70 minutes.

Freeways on this drive

SR-241 North in Orange County (12 miles) · SR-91 East in Orange County (7 miles) · SR-71 South in Orange County (3 miles) · SR-133 North in Orange County (1.6 miles)

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

More drives

Rancho Cucamonga to Lake Forest (return trip) · Lake Forest to Los Angeles · Lake Forest to Moreno Valley · Lake Forest to Long Beach · Lake Forest to Anaheim · Lake Forest to Riverside · Lake Forest to Santa Ana · Lake Forest to Irvine · Lake Forest to San Bernardino · Lake Forest to Fontana · Lake Forest to Huntington Beach · Lake Forest to Glendale

Open the live traffic map →

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	50	61	54	55	53	55	53	55	60	64	67	65	55	55	55	49
Tue	48	52	64	57	54	55	55	53	55	61	69	68	66	58	57	54	49
Wed	48	51	67	58	54	56	55	53	55	61	63	61	68	57	54	54	49
Thu	48	51	64	56	53	52	52	52	57	60	68	65	65	57	55	55	49
Fri	48	49	50	53	53	53	56	60	66	68	70	66	65	56	55	54	49
Sat	48	49	49	49	50	51	56	53	54	54	62	57	61	58	53	52	49
Sun	48	49	49	49	49	49	50	51	53	50	50	51	50	50	50	51	48

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	50	61	54	55	53	55	53	55	60	64	67	65	55	55	55	49
Tue	48	52	64	57	54	55	55	53	55	61	69	68	66	58	57	54	49
Wed	48	51	67	58	54	56	55	53	55	61	63	61	68	57	54	54	49
Thu	48	51	64	56	53	52	52	52	57	60	68	65	65	57	55	55	49
Fri	48	49	50	53	53	53	56	60	66	68	70	66	65	56	55	54	49
Sat	48	49	49	49	50	51	56	53	54	54	62	57	61	58	53	52	49
Sun	48	49	49	49	49	49	50	51	53	50	50	51	50	50	50	51	48

Leave	5am	6am	7am	8am	9am	10am	11am	12pm	1pm	2pm	3pm	4pm	5pm	6pm	7pm	8pm	9pm
Mon	48	50	61	54	55	53	55	53	55	60	64	67	65	55	55	55	49
Tue	48	52	64	57	54	55	55	53	55	61	69	68	66	58	57	54	49
Wed	48	51	67	58	54	56	55	53	55	61	63	61	68	57	54	54	49
Thu	48	51	64	56	53	52	52	52	57	60	68	65	65	57	55	55	49
Fri	48	49	50	53	53	53	56	60	66	68	70	66	65	56	55	54	49
Sat	48	49	49	49	50	51	56	53	54	54	62	57	61	58	53	52	49
Sun	48	49	49	49	49	49	50	51	53	50	50	51	50	50	50	51	48