The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs

The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs takes place in Long Beach, California, on October 31, 2026. The half marathon (13.1 miles) starts at 7:00 a.m., with the 10K and the 5K following at 8:30 a.m. The route runs along the Long Beach waterfront with the historic Queen Mary as a backdrop. Costumes are encouraged, and the event includes professional timing, photo opportunities and a finish-line party.

Waterfront routes tend to be flat and rhythmic, which favors even pacing over surges: pick a pace you can hold from the first mile to the last and resist the urge to bank time early. The 7:00 a.m. half start gives you a long finish-line morning afterward. Preparation is standard for the distance, around ten to twelve weeks with the long run growing week by week.