Halloween Havoc – 5K, 10K, and Half Marathon

Halloween Havoc – 5K, 10K, and Half Marathon

Fountain Valley, CAOctober 26, 2025

13.1M15K10K5K
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Get ready to run for your life at the Halloween Havoc! Our spooky season adventure tests your courage and endurance! Our celebratory finish line will have Halloween candy, spooky music, and other wicked surprises. So grab your scariest costume and come join us for the Halloween Havoc! Details Start Location: Mile Square Park, Parking lot D. Across the street from 11014 Lavender Ave, Fountain Valley, CA 92708. Park entrance at 16801 Euclid St, Fountain Valley, CA 92708 Parking: $5.00 per car at Mile Square Park (Opens at 7am). Limited free street parking is available. Event Schedule: 7:00am – Bib pick-up opens at the start – GPS to Starting Line 7:30am – Half marathon start 7:45am – 5k & 10k start 11:00am – Course closes (3 hours, 30 minutes for the Half) Early start of 7am may be pre-arranged for half marathoners, email your request to events@hightideruns.com. All early starters will not be eligible for awards. Loop Course There is currently construction going on in Mile Square Park, so our routes have changed slightly: 5k & 10k – this 5k route is used for the 5k (one loops), 10k (two loops) – route here Half Marathon – this route is used for the half marathon, it's similar to the 5k route but there is an additional out and back – route here More About the Course: This is a looped course, meaning you will begin and finish in the same location. Our courses are not closed, which means that there are often runners, walkers, and others enjoying the day along with you. On-course support: Courses are well marked with two water stations and restrooms along the way. Have Another Question? Check our FAQ page , it's probably answered there!

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Please visit the official race website and registration page to confirm all details, as information may change.