Traffic Predict

Best Time to Drive from Upland to Lake Forest

Right now (7:05 pm PDT): about 55 minutes via SR-241 South, usually 47 at this time.

Only 28% 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.

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Typical drive time by departure time

Minutes from Upland to Lake Forest by day and time you leave (local time)
Leave5am6am7am8am9am10am11am12pm1pm2pm3pm4pm5pm6pm7pm8pm9pm
Mon4650545954515150515156616056484746
Tue4550586158535350515258605957484745
Wed4551576458545150515260616060474745
Thu4550545954525151525359616258484745
Fri4550505250515151555963646359504745
Sat4546474748495048485150535150474645
Sun4545454646484747494847464646464745

About this drive

On weekdays the 39-mile drive from Upland to Lake Forest (via SR-241 South) usually takes as little as 45 minutes and up to 64 minutes, when leaving around 8 am on Wednesdays. The fastest times to leave are before 6 am or after 7 pm. Midday (11 am to 2 pm) it takes about 52 minutes. On weekends it is slowest around 3:30 pm on Saturdays (54 minutes).

About 25 miles of it is freeway, where times follow typical and live traffic from our sensors, and about 15 miles surface streets (23 to 41 minutes on weekdays), estimated from how jammed the freeways around them are at that time. Drive times are measured from central Upland to central Lake Forest 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 Upland to Lake Forest?

On weekdays, leave before 6 am or after 7 pm. The drive usually takes about 45 minutes then, versus up to 64 minutes at the worst times.

How long does it take to drive from Upland to Lake Forest?

The 39-mile drive usually takes 45 to 64 minutes on weekdays, depending on when you leave, and about 52 minutes midday.

When is traffic worst from Upland to Lake Forest?

Leaving around 8 am on Wednesdays is usually slowest, about 64 minutes.

Freeways on this drive

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