Skip to main content

Nassau Suffolk Trail Marathon & 15 Miler

Sun May 18, 2025 Farmingdale, NY 11735 US

Events

Nassau Suffolk Trail Marathon

$85 7:30AM EDT - 2:45PM EDT Price increases after March 3, 2025 at 11:59pm EST

Nassau Suffolk Trail 15 Miler

$75 8:00AM EDT - 2:45PM EDT Price increases after March 3, 2025 at 11:59pm EST

Place

99 Quaker Meeting House Rd
Bethpage State Park Picnic Area
Farmingdale, NY US 11735

Description

Long Island has a rich and deep running culture. There are multiple events every weekend to choose from. However, runners that enjoy longer race distances or trail events have only a few options to choose from over the course of the entire year. This event will provide an opportunity for those that enjoy ultra or trail running to participate in a great event. A portion of the proceeds will benefit the Long Island Greenbelt Trail Conference, who help maintain the trails on Long Island.

SRC Presents: The Greenbelt Marathon and 15 Miler

Pennant Giveaway

The Greenbelt Marathon & 15 Miler Pennant Giveaway
The classic silhouette and vintage inspired design in traditional pennant form make for a unique event giveaway for all participants. (Image pending)

Bib Pick Up

Friday, May - 12-5 pm at Smithtown Running Company
Saturday, May - 11-5 at Smithtown Running Company

Finisher Award

The Greenbelt Marathon & 15 Miler Finisher Award
Each finisher will receive a custom race patch to proudly attach to any of their gear to display at their adventures on the trail.

*Patch proof and image pending.

Awards

Awards will be given to the following categories:
Female & Male Overall
Female & Male Masters
Female & Male Age Group Winners in 10 year age groups, 20-29, 30-39, 40-49, 50-59, 60-69, & 70+

There will only be finisher's awards for the 15 Miler event.

Courses


Marathon:

The event will start in the picnic area of Bethpage State Park, runners will do a loop on the Cross Country and Red Trail before heading North on the Nassau/Suffolk Greenbelt Trail. Turning around at the Cold Spring Harbor Aid Station in the parking lot on 25A. GPX Map Here

Google Maps Here

15 Miler:
The event will start in the picnic area of Bethpage State Park, runners will do a loop on the Cross Country and Red Trail before heading North on the Nassau/Suffolk Greenbelt Trail. Turning around at the Trailview State Park Aid Station on Jericho Turnpike (25). GPX Map Here

*Online mapping runs the courses long. When the course was measured with a GPS device it came out closer to the intended distances.

Reading Trailblazes and Course Markings

The Nassau/Suffolk Greenbelt is marked with white trail blazes. We will also be using survey flags to mark the trail. In prominent areas we will use cones, arrows, and marking tape.

Cutoffs

Marathon - 7 Hours 15 Minutes - 16:30 pace per mile, runners must be out of Cold Spring Harbor Aid Station by 11:38 am and through the Trailview State Park Aid Station by 1:07 pm.
15 Miler - 6 Hours 45 Minutes - The course will be open for the duration of the marathon. 

Aid & Hydration Stations

Hydration at East Bethpage Rd and Stillwell Lane
Aid at Jericho Turnpike and CSH

Marathon:
There will be a total of 3 aid stations along the course plus 4 hydration stations. 

15 Miler:
There will be an aid station at the turn around plus 2 hydration stations.

Aid Station Stock:
PBJ
Bananas
Gummy Bears
Trail Mix
Potato Chips
Pretzels
Soda - Coke, Ginger Ale
Pickles
Salt
Gels
Electrolyte Hydration Mix
Water
Ice

Cupless Event

This is a cupless event. Please use your own containers for water, hydration drink mix, and other fluids.

Personal Support and Race Crews

You are welcomed and encouraged to have your own race crew support you along your journey. Crew access is pin pointed on the Google race map. Please be courteous to other participants and the neighboring communities. 

LI Greenbelt Trail Conference

Founded in 1978, the Long Island Greenbelt Trail Conference is a unique non-profit grassroots organization that has created more than 200 miles of hiking paths on Long Island, including three National Recreation Trails. We are dedicated to protecting open space and our scenic Greenbelt trails for all to enjoy.

Since our founding, we have led more than 7,000 guided hikes, and now lead more than 200 free guided hikes each year. Our volunteers have donated a total of 500,000+ volunteer hours to Long Island’s parks and trails.

More Information

Sponsors

Race Contact Info

If you have any questions about this race, click the button below.

If you continue to use this site, you consent to use all cookies. We use cookies to offer you a better browsing experience. Read how we use cookies and how you can control them by visiting our Privacy Policy.

If you continue to use this site, you consent to use all cookies.