Christmas Tree Lane Lighting Ceremony and Winterfest

Altadena’s Christmas Tree Lane lights on Saturday, December 5, 2026, at 6 p.m. at Santa Rosa Avenue and Mariposa Street. The free ceremony counts down more than 20,000 lights on nearly a mile of deodar cedars, a display that has run since 1920.

Winterfest runs the same afternoon and evening from 3 to 9 p.m. with artisan vendors, food trucks, live music, kids’ activities, and Santa photos. After opening night, the Lane stays lit for the season for drive-through and walking visits.

Come for the countdown if you want the crowd. Come later in December for a quieter cruise of the trees, then grab dinner nearby.