THINGS TO DO IN MASTIC BEACH

Welcome to Mastic Beach! Check out the latest events in town. Explore by location, trending searches, top organizers, and more. Whether you're a local, new to the area, or cruising through, there's no shortage of unique things to do.

Top activities in Mastic Beach and Online

Your plans, made easy. Check out the most popular things to do in Mastic Beach and online.

Stewardship Saturday: Heckscher State Park Invasive Removal & Planting

Sat, Oct 31, 9:30 AM

Heckscher State Park Cottages • Great River, NY

Free

NYS Parks Long Island Environmental Education

5.3k followers

Hallock Beach Walk/Cleanup

Sat, Oct 31, 10:00 AM + 60 more events

Hallock State Park Preserve • Riverhead, NY

Free

AMSEAS

353 followers

Moonlight Night Hike

Fri, Nov 20, 5:00 PM

Ansonia Nature & Recreation Center • Ansonia, CT

Free

Ansonia Nature and Recreation Center

383 followers

What's in the Harbor?

Sat, Nov 21, 10:00 AM + 1 more events

Canal Dock Boathouse, Inc. • New Haven, CT

Free

COASTS Program

22 followers

Lean Global Connection 2026

Thu, Nov 12, 2026 2:00 PM UTC (+00:00)

Lean Global Network

3k followers

The MI5 Archive: Official Secrets

Fri, Nov 27, 2026 2:00 PM GMT (+00:00)

The National Archives

33.7k followers

No Title, No Permission, No Problem: Harnessing the Power of Influence

Thu, Nov 5, 2026 1:00 PM GMT (+00:00)

Starts at £37.50

Sensible Media Ltd

1.3k followers

Washington Crossing the Delaware / The Crossing - Film History Livestream

Sat, Dec 19, 2026 8:00 PM EST (-05:00)

Washington DC History & Culture

49.1k followers

Top activities in Mastic Beach and Online

Your plans, made easy. Check out the most popular things to do in Mastic Beach and online.

Stewardship Saturday: Heckscher State Park Invasive Removal & PlantingStewardship Saturday: Heckscher State Park Invasive Removal & Planting

Hallock Beach Walk/CleanupHallock Beach Walk/Cleanup

Moonlight Night HikeMoonlight Night Hike

What's in the Harbor?What's in the Harbor?

Lean Global Connection 2026Lean Global Connection 2026

The MI5 Archive: Official SecretsThe MI5 Archive: Official Secrets

No Title, No Permission, No Problem: Harnessing the Power of InfluenceNo Title, No Permission, No Problem: Harnessing the Power of Influence

Washington Crossing the Delaware / The Crossing - Film History LivestreamWashington Crossing the Delaware / The Crossing - Film History Livestream

Stewardship Saturday: Heckscher State Park Invasive Removal & Planting

Hallock Beach Walk/Cleanup

Moonlight Night Hike

What's in the Harbor?

Lean Global Connection 2026

The MI5 Archive: Official Secrets

No Title, No Permission, No Problem: Harnessing the Power of Influence

Washington Crossing the Delaware / The Crossing - Film History Livestream