The Long Beach Halloween Run 5K. 10K. Half Marathon by Califlow Runs
Oct 31Long Beach, CAHalf Marathon, 10K +1
Also a half marathon, 3 mi from Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge, registration open
Listed from RunSignUp. Checked Sep 21, 2026.
Aid stations, cutoffs and pacing in one plan, with the timeline your crew follows. Crew invites and race-day updates come with a Race Pass.
Build my plan SEASONAL CONFUSION RUN
5K • 10K • Half Marathon • 5K HYBRID
Sunday, September 13
5000 E Ocean Blvd, Granada Beach | Long Beach, CA
Sweater or bikini? Iced coffee or pumpkin spice?
It’s California — we’re officially in a state of seasonal confusion.
The Seasonal Confusion Run celebrates that weird in-between moment when summer won’t let go, fall is pretending to arrive, and the weather absolutely refuses to cooperate.
Come run the coast in whatever makes sense to you — hoodie, tank top, or beachwear encouraged.
RACE DAY SCHEDULE
• Half Marathon: 7:00 AM
Half Marathon Hybrid: 7:00AM
• 5K & 10K: 8:00 AM
• 5K 10K Hybrid: 8:10 AM
Same-Day Registration & Bib Pickup: Opens at 6:00 to 8:10 AM
NEW: HYBRID CHALLENGE
Want more than the 5K, 10K, Half Marathon? Take on our Hybrid Challenge, combining your run with a finish-line functional fitness challenge.
Everyone starts together and completes the normal course.
When Hybrid runners return from the course, they DO NOT cross the finish line yet. Instead, they head directly into our TFL Hybrid Zone to complete:
5K RUN
↓
BURPEES
↓
BODYWEIGHT LUNGES
↓
WALL BALLS
↓
FINISH LINE
Complete all three workout stations, then cross the finish line to officially complete the 5K Hybrid Challenge.
5K HYBRID FINISHERS RECEIVE BOTH
Custom Seasonal Confusion 5K Finisher Medal
➕
Exclusive Hybrid Finisher Patch
You ran the 5K. You completed the challenge. You earned both.
WHY YOU’LL LOVE IT
• Flat, fast, scenic beach path course
• Beginner- and walker-friendly
• Strollers welcome
• Dogs on leash welcome
• Professional chip timing
• Free race-day photos
• Overall & age group awards
• Finish line festival vibes
Whether you're chasing a PR, walking the 5K, taking on the Hybrid Challenge, or going the full Half Marathon, there's a place for you at the start line.
POST-RACE PERK
Run first, refuel after.
Take your bib just steps from the finish line to Monty’s Dog Beach Café and receive 20% off food when you present your race bib.
WHY CALIFLOW RUNS
Life doesn’t wait for perfect conditions — and neither do we.
CaliFlow Runs creates inclusive, feel-good races where everyone belongs. Whether you’re racing hard, walking it out, challenging yourself in the Hybrid Zone, running with your pup, or just here for the vibes, this is a space to move, breathe, laugh, and enjoy the moment.
It may not be fall yet.
It may not be summer anymore.
But it is a great day to run. ♀️
Registration opens
Jan 26, 2026
Tier 1 ends
Apr 2, 2026
Tier 2 ends
Jul 2, 2026
Tier 3 ends
Sep 2, 2026
Tier 4 ends
Sep 3, 2026
Registration closes
Sep 13, 2026
Race day
Sep 13, 2026
Standard ends
Sep 13, 2026
Tier 5 ends
Sep 13, 2026
10K
Tier 5 ended Sep 13, 2026
See registration
5K
Tier 5 ended Sep 13, 2026
See registration
5K Hybrid Challenge
Standard ended Sep 13, 2026
See registration
Half Marathon
Tier 5 ended Sep 13, 2026
See registration
Hybrid Challenge 10K
Standard ended Sep 13, 2026
See registration
Hybrid Challenge Half Marathon
Standard ended Sep 13, 2026
See registration
Registration openings and major changes, like a new date or a cancellation.
Can't race, or need an entry? Post it here so nobody has to ask if it's still available.
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Also a half marathon, 3 mi from Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge, registration open
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Also a half marathon, 3 mi from Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge, registration open
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Also a half marathon, 44 mi from Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge, registration open
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Also a half marathon, 3 mi from Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge, registration open
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Build your aid station plan, organize your crew, and dial in your nutrition strategy. Everything you need to finish strong.
Build my planAre you the race director for Seasonal Confusion 5K. 10K. Half Marathon & Hybrid Challenge?
Claim this race to manage registration, volunteers, and race day.