For nearly 25 years the "people of Thoroughbred Lane" (Near Hillside and Sapphire north of the 210 Freeway) in Rancho Cucamonga have been putting on some of the best Christmas lights displays in the Inland Empire. The light displays are usually on beginning just after Thanksgiving and stay up only until Christmas day. They light up around dark and to keep the neighborhood sane, are usually turned off by 11pm. Police usually setup barricades and control traffic as Christmas approaches so to beat the crowds it's best to come early in the month of December - Don't wait until Christmas Eve or Christmas night!
The light displays are around Thoroughbred near Sapphire. If coming on the 210 Freeway, exit Carnelian and go north (toward the mountains). Come early and expect to sit in a line of cars especially if you come in the days just before Christmas.
The best (secret) place to park is on Vinmar Avenue or Orchard St. Come up Carnelian to Hillside, turn left and head west. Go PAST Sapphire one block and turn left on Vinmar. Follow Vinmar to Orchard and turn left, or go past Orchard and park before Sapphire. You are then a short walk down Sapphire to the lights.