THE NORTHWELL HEALTH GREAT SOUTH BAY RUN - SATURDAY OCTOBER 3rd, 2026.

Celebrate 41 years of running on Long Island at the Northwell Health Great South Bay Run!

Starting and finishing at beautiful Bay Shore Marina Park, this Long Island tradition offers three USATF-certified courses, giving runners of all abilities the chance to be part of an AWESOME race day.

• HALF MARATHON: 13.1 Miles
• 10K RUN: 6.2 Miles
• 5K FAMILY FUN RUN: 3.1 Miles

Each course takes runners through the heart of historic downtown Bay Shore, past beautiful residential neighborhoods, and alongside some of the area’s most scenic landmarks, including the Brightwaters Lakes, Cascades, and Canals.

Then get ready for an incredible finish back at Bay Shore Marina with sweeping, unobstructed views of Fire Island and the Great South Bay.

Whether you're chasing a Half Marathon PR, racing the 10K, running your first 5K, or enjoying the day with family and friends, the Great South Bay Run delivers an unforgettable Long Island race experience.

THREE DISTANCES. ONE GREAT RACE DAY.