Halloween Party
Free outdoor family-and-pet Halloween gathering with games, crafts, prizes, photo stations, doggie games and costume contest, plus trick-or-treating in a temporary vendor area featuring local businesses and pet-product vendors.
- When · Pacific time
- Sat, Oct 31
9 am–12 pm - Where
- Pantera Park
738 Pantera Drive, Diamond Bar, CA 91765
Los Angeles County - Admission
- Free visitor event; no admission fee is stated.
- Before you go
- Public outdoor park event for children, families and dogs. Pumpkin contest entries are 8:30–9:00 am and voting is 9:00–11:30 am; detailed parking/accessibility information is not stated.
Please note: The vendor canopy is a temporary local-business/pet-product fair component; vendor participation has a separate October 9 deadline and does not change free visitor admission.
Dates in our guide
Saturday, October 31, 2026 · 09:00–12:00. Dates announced by the source.
- Sat, Oct 31 · 9 am–12 pmCalendar ↓
Sources & freshness
Checked 2026-09-09. Confirm last-minute changes before traveling.
Independent listing. How this guide works.