Sunday, January 4, 2026

Sunday’s Altadena Forever Run Prompts Multiple Street Closures Across Altadena

Sunday’s inaugural Altadena Forever Run will bring widespread road closures and possible traffic delays across the foothill community as organizers prepare for a commemorative event marking the upcoming first anniversary of the Eaton Fire.

The multi-tier run, scheduled for Jan. 4, was organized through a collaboration involving the Los Angeles Sheriff’s Athletic Association, the Altadena Sheriff’s Station and the Sheriff’s Support Group of Altadena.

A series of complete closures were to take effect at 6 a.m. and remain in place until noon, including Mariposa Street between Ganesha and Glen avenues, Mendocino Street between Allen and El Molino avenues, Altadena Drive between Lake and Allen avenues, and Ventura Street between Fair Oaks Avenue and Glen Avenue. No crossing will be permitted during the closure window.

Major north–south corridors will also be affected. Fair Oaks Avenue from Ventura Street to Altadena Drive and Lake Avenue from Mendocino Street to Altadena Drive are expected to experience heavy congestion, according to the event’s road-impact table. Glen Avenue, Calaveras Street and Ganesha Avenue will face minor closures with access restricted to residents only.

Residents living inside the “inner loop” of the course — the area between Altadena Drive and Mendocino Street — faced vehicle relocation by 6:00 a.m. to avoid being sequestered within their neighborhoods.

The finish line at Mariposa Junction, located at 849 E. Mariposa Street, will serve as a focal point for social reintegration, featuring local food vendors and community booths intended to stimulate the local economy while providing a venue for collective reflection, according to event materials.

The event functions as both a fundraising mechanism and a psychological milestone for the community.

The run is designed to traverse the “burn scar” left by the January 2025 wildfires, with organizers framing the course as a form of renewal.

As many as 3,000 runners are expected to participate, ranging from professional athletes to fire survivors and their families.

The event includes three race categories:

• A 10K Run, starting at 8:00 a.m., aimed at competitive runners, with course highlights through foothill neighborhoods, the historic business district and active rebuild sites.
• A 5K Walk/Run, also starting at 8:00 a.m., geared toward the general community, passing through the lower foothills and volunteer-lined cheering stations east of Lake Avenue.
• A 1K Family Walk, beginning at 10:00 a.m., designed for families and children, moving west past the Altadena Library. The event is free for children aged 10 and under.