Haunted Hills 10K Redwood City

Redwood City, United States • 25 Oct 2025

The Haunted Hills 5K & 10K in Redwood City is a festive running event featuring a Halloween-themed adventure through decorated neighborhoods. Participants, in teams of 1 to 5, use headlamps or flashlights to navigate approximately 20 checkpoints for the 5K or 36 for the 10K, answering simple questions along the way. The event combines physical activity with fun, spooky decorations, and concludes with refreshments and socializing at the finish line. It offers a unique way to celebrate Halloween while enjoying community and outdoor exercise. Registration closes the day before the event. Visit the organization's website for the most recent information.

Race information

10 km
10k
5 km
Visit the organization's website for the most recent information.
Trail runs nearby

The No Foolin' Foot Race, organized by the Parks and Recreation Foundation of San Carlos, invites participants to explore the scenic trails of San Carlos in its third annual event. Runners can choose between a challenging 5k and 10k course, featuring significant elevation gains, or a 1-mile course f..

The Hacienda Hills Trail Run - Spring is a trail running event held near San Jose, California, at Almaden Quicksilver County Park. It features nine race distances, including a Kids Run, 1 Mile, 5K, 10K, 9-Mile, Half Marathon, 30K, Trail Marathon, and 50K, offering options for all levels of runners...

The Grizzly Peak Trail Run is an exciting running event taking place at Lake Anza in Tilden Regional Park, Berkeley, CA. Scheduled for May 10, 2025, it features multiple race distances including a 10K, Half Marathon, 30K, Marathon, and 50K, along with a free Kid's Run for children aged 6 and under...

The Quicksilver Endurance Runs is an annual trail running event held in San Jose, California, featuring 50K and 100K races on scenic, challenging single-track trails and fire roads through oak forests, meadows, and ridges with panoramic views of the Santa Clara Valley and Santa Cruz Mountains. The 1..

The 13 Mile Trail Race Top Down is a scenic trail running event held in San Jose, California, featuring a half marathon course through Almaden Quicksilver Park and Sierra Azul Open Space Preserve. Participants are transported from Almaden Quicksilver Park to the starting point at Mt. Umunhum, where..

The Run for Amma is a charity running event held at Skyline Ridge Open Space Preserve in Los Gatos, California, on May 17, 2025. The event features three race distances: 50K, 30K, and 10K, with start times at 7:30 AM and 9:00 AM. All proceeds from registration are donated to the UCSF Julia Carnevale..