New England Green River Marathon

New England Green River Marathon

Sunday, August 28, None Specified
Greenfield Community College (Finish Line)

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Registration for the 2022 race is open! Go to our Registration page for more information.

The New England Green River Marathon is one of the most beautiful races in New England. Starting in Marlboro, Vermont and following the course of the Green River through an 1870’s covered bridge, and ending with a finish-line celebration in the shade of maple trees at Greenfield Community College in Massachusetts. The race supports the Sugarloaf Mountain Athletic Club and Connecticut River Conservancy, building community in support of the environment and to help our runners achieve their goals. This USATF-certified (Certification MA18003JK) course has a net 1,400 foot drop over a rolling, downhill course that has seen many personal best and Boston qualifying times for well-trained runners.

COVID-19 Pandemic Information
The New England Green River Marathon follows the regulations and guidelines set forth by the State of Vermont, Commonwealth of Massachusetts, and the United States Centers for Disease Control and Prevention. Specific measures and requirements will be listed here as race day approaches.

About the New England Green River Marathon

The idea for the New England Green River Marathon was sparked by the exceptional beauty of the course itself, which follows nearly the entire length of the Green River from its headwaters in Marlboro, Vermont to its confluence with the Deerfield River in Greenfield, Massachusetts. It’s a favorite running spot for many local runners; we can’t think of a better place to run, and we’d like to share it with you! This is a small, rural, community race and isn’t a big money maker; to us it’s more about getting together to celebrate our love of the outdoors and running.

As runners, we cherish our environment, and we want to give something back through this race. The proceeds will be shared between the Connecticut River Conservancy, which works hard to preserve the natural beauty of this habitat, and the Sugarloaf Mountain Athletic Club (SMAC). SMAC was founded in 1972 as a club for female athletes, but has since then been open to everyone who wants to discover the joy of running. Scroll down for more info about SMAC and the CRC.

We couldn’t set up this event without the invaluable support of Marlboro Music in Vermont, where the race starts, and Greenfield Community College, where it finishes. So come run with us, and we will do what we can to provide you with a first-class marathon experience, with chip timing, a certified course, awards, local food, and a great vibe!

More about us and our causes

The race is presented by Natural High Running Company LLC, in partnership with our beneficiaries, the Sugarloaf Mountain Athletic Club and Connecticut River Conservancy.

Since 1952, Connecticut River Conservancy has worked to protect your rivers from source to sea so everyone can enjoy them. Our rivers belong to all of us. CRC is their voice. They find environmental problems and fix them, across all four Connecticut River states. They run community river cleanups. They remove deadbeat dams and plant trees. They protect and restore wildlife. They speak up on behalf of your rivers. To learn more or join the effort, visit Connecticut River Conservancy’s work includes the many tributary rivers and streams that flow into the Connecticut River, including the Green River. The Green River Cleanup is the largest local cleanup group participating in CRC’s nationally recognized 4-state Source to Sea Cleanup event each fall. Hundreds of volunteers get their hands dirty and feet wet keeping the Green River free of trash. To learn more about the Source to Sea Cleanup, visit

Sugarloaf Mountain Athletic Club is a 501(c)(3) non-profit organization dedicated to promoting health, fitness, and friendly competition through running in Western Massachusetts. Originally founded as a women’s running club in 1972, it quickly moved to wecome all runners. Today the club has around 300 members and reaches over 2,800 runners each year through its races, track and hill workouts, track meets, and robust youth track program. We are a member club of both USA Track & Field (USATF) and the Road Runners Club of America (RRCA). To learn more – and to join, visit us at

Natural High Running Company LLC is a small runner-owned running event management company in Western Massachusetts.

Posted to: Recreate Outdoors