Once in a Blue Moon 5K. 10K. Half Marathon by Califlow Runs

🌕 Once in a Blue Moon Run
5K • 10K • Half Marathon
Sunday, May 31, 2026 | Long Beach, CA

This run really is once in a blue moon — literally.

Join us on the morning of the actual Blue Moon for a rare and memorable coastal run designed to celebrate movement, timing, and being present for moments that don’t come around often. Whether you’re chasing miles, memories, or just the magic of a truly unique day, this is one you’ll want to say you were part of.

Expect ocean views, high vibes, and that unmistakable CaliFlow energy — all under the glow of a moon that only shows up every few years. 💙🌕

 
🔵 Fun Blue Moon Facts
A Blue Moon happens when there are two full moons in one month
It occurs only every 2–3 years, which is why we say “once in a blue moon”
The moon isn’t actually blue — but the moment is still rare and special
This is one of those runs people remember and say: “I was there for that.”
 
🌊 Race Highlights
🌕 Professionally chip-timed for accurate results
📸 Free race-day photos & downloadable finish-line pics
🎖️ Finisher medals for all participants
🏆 Overall & Age Group Awards
🌊 Flat, fast, scenic beach course
🥤 Water stations & restrooms along the route
🎶 Finish-line music, snacks, and photo moments to celebrate your miles

 
🌺 Why CaliFlow Runs?
At CaliFlow Runs, we believe running should be inclusive, affordable, and fun. We host 50+ events each year to create experiences where everyone — of every pace and background — feels welcome.

Our races are known for professional execution, free photos, great vibes, and a strong sense of community — without the big-race price tag. Whether you’re racing the clock or soaking in the moment, you belong here.

 
👟 Who Can Participate?
Everyone!
Runners • Walkers • Strollers • All paces welcome

Come as you are. Leave with rare miles and a great story. 💙

 
⏰ Bib Pick-Up & Start Times
📍 Location: 5100 E Ocean Blvd, Long Beach, CA 90803 (Granada Beach)

Bib Pick-Up:
🕕 6:15 AM – 7:30 AM at the Race Ready Athletics Tent

Start Times:
• Half Marathon: 7:00 AM
• 5K & 10K: 7:30 AM

 
🚗 Parking Info
Street parking available (check posted signs for street sweeping).
Paid beach lot parking is $2.00 per hour via Passport app or on-site machine.
Arrive early for best access near the start line.

 
🏅 Awards & Medals
🏅 All finishers receive a custom Once in a Blue Moon medal
🏆 Overall & Age Group Awards in each distance

 

If it’s not CaliFlow, it’s just an average race. 💙