Mashomack Preserve wilderness guide
Protected Natural Preserve · NY

Mashomack Preserve

Mashomack Preserve is a vast nature preserve on Shelter Island, New York, known for its extensive hiking trails, diverse ecosystems, and rich wildlife. It offers a tranquil outdoor experience with multiple habitats including woodlands, salt marshes, and freshwater ponds.

Protected Natural Preserve2,0394+ Trails

Designation

Protected Natural Preserve

Total Wilderness Area

2,039

Elevation / Terrain

Diverse Wilderness

Field Editorial Guide

About Mashomack Preserve

Mashomack Preserve is a vast nature preserve on Shelter Island, New York, known for its extensive hiking trails, diverse ecosystems, and rich wildlife. It offers a tranquil outdoor experience with multiple habitats including woodlands, salt marshes, and freshwater ponds.

Wilderness Landscape & Natural Heritage

Mashomack Preserve spans over 2,000 acres on Shelter Island, located between the North and South Forks of Long Island, New York. Managed by The Nature Conservancy, it features a variety of ecosystems such as oak-pine forests, freshwater ponds, tidal creeks, and salt marshes. This diversity supports a wide range of flora and fauna, making it a popular destination for birdwatching, including sightings of herons, osprey, and occasionally migrating raptors. The preserve’s trails allow visitors to explore different natural habitats in a serene setting. Historically, the land was part of large private estates before being acquired for conservation purposes in the late 20th century to protect its unique coastal environment. Visitors can hike, bike, and canoe on designated trails and waterways, as well as enjoy wildlife viewing and photography opportunities. Notable landmarks include the historic Mashomack Pond and the maritime forest areas. The preserve’s relatively remote location on Shelter Island contributes to its peaceful atmosphere, offering a retreat from the busier nearby regions of Long Island. Mashomack is a key conservation area that helps maintain the ecological health of Shelter Island and serves as a critical sanctuary for native species.

Field Guide · Protected Natural Preserve
Adventure Destinations

Notable Destinations Near Mashomack Preserve

Scenic viewpoints, outdoor landmarks, and notable points of interest within 60 miles.

Key Wilderness Highlights

✦ Mashomack’s diverse ecosystems ranging from tidal salt marshes to upland forests✦ Exceptional birdwatching opportunities including sightings of rare and migratory species✦ Historic stone walls and remnants of old farmsteads throughout the preserve✦ Quiet canoeing on Mashomack and Buttonweed Ponds
Wilderness Recreation

Outdoor Adventures in Mashomack Preserve

Explore curated guides for top outdoor sports, trail networks, and wilderness activities.

Park Recreation

Hiking

Available in Mashomack Preserve
Park Recreation

Birdwatching

Available in Mashomack Preserve
Park Recreation

Mountain Biking

Available in Mashomack Preserve
Park Recreation

Paddle Sports

Available in Mashomack Preserve
Park Recreation

Photography

Available in Mashomack Preserve
Park Recreation

Nature Study

Available in Mashomack Preserve
The Ranger Station

Visitor Logistics & Essential Planning

Everything you need to know about entrance passes, seasons, visitor centers, road transit, and wildlife safety in Mashomack Preserve.

Passes & Fees

Entrance Requirements & Interagency Passes

Free access; no permits required for day use

Wilderness Checklist

Carry paper topographic map & compass in remote zones.
Store all food and scented items in approved bear canisters.
Check wildfire / smoke advisories before backcountry departure.
Pack out everything you pack in (Leave No Trace).
Adventure Basecamps

Gateway Towns Near Mashomack Preserve

Stay, dine, and gear up in these mountain towns and scenic basecamps surrounding the park.

Orient, New York
⌖ 2.50 miles
Gateway Basecamp

Orient, New York

Orient, NY offers a peaceful coastal escape with hiking trails, kayaking spots, and quiet beaches. Perfect for travelers seeking outdoor activities alongside scenic ocean views on Long Island’s serene East End.

Late Spring to Early Fall
Explore Town
Shelter Island, New York
⌖ 3.38 miles
Gateway Basecamp

Shelter Island, New York

Shelter Island is a tranquil Long Island getaway offering hiking, biking, kayaking, and fishing amid protected natural reserves and quiet beaches. Ideal for outdoor lovers seeking calm coastal adventures away from crowds.

Late Spring to Early Fall
Explore Town
Greenport, New York
⌖ 3.40 miles
Gateway Basecamp

Greenport, New York

Greenport is a scenic North Fork town with easy access to kayaking, biking, and sailing along Long Island’s serene coastline. Its waterfront, preserved parks, and charming village create a perfect base for outdoor adventurers seeking a coastal escape.

Late Spring through Early Fall
Explore Town
Sag Harbor, New York
⌖ 6.98 miles
Gateway Basecamp

Sag Harbor, New York

Sag Harbor, New York, is a coastal gem in the Hamptons offering kayaking, sailing, hiking, and paddleboarding amid beautiful bays and historic charm. Ideal for water lovers and nature seekers who want active days with scenic views.

Late Spring through Early Fall
Explore Town
Southold, New York
⌖ 7.41 miles
Gateway Basecamp

Southold, New York

Southold, New York, is a peaceful coastal town perfect for kayaking, biking, bird watching, and fishing. With protected preserves and calm waters, it’s ideal for outdoor lovers seeking quiet nature escapes.

Spring through Fall
Explore Town
Peconic, New York
⌖ 9.83 miles
Gateway Basecamp

Peconic, New York

Peconic, NY offers peaceful coastal and countryside outdoor adventures including paddling, biking, and fishing in quiet natural settings. It’s an ideal spot for travelers seeking waterfront exploration and low-key nature escapes.

Spring through Fall
Explore Town
Expert-Led Wilderness Expeditions

Guided Experiences in Mashomack Preserve

Explore scenic backcountry routes and epic wilderness adventures with certified local mountain guides, naturalists, and outfitters.

Selina II: A Four‑Hour Private Sail Through Shelter Island Heights
ADVEXPEDITION
Shelter Island Heights, New York
SailingADV Bookable

Selina II: A Four‑Hour Private Sail Through Shelter Island Heights

A relaxed, private 4‑hour charter aboard a classic wooden yacht that explores Shelter Island, Dering Harbor, Greenport and Peconic Bay—this guide explains what to expect and how the outing is tailored to your group.

SailingPT2HCertified Outfitter
Bookable OnlineBook Trip