The Brooklyn Half Marathon is just around the corner—and this year, the heat is on. With temperatures expected to climb to a high of 78°F and a RealFeel of 85°F on Saturday, May 16, organizers are taking extra steps to keep runners safe along the 13.1-mile course from Prospect Park to the Coney Island boardwalk.

Race officials at New York Road Runners are warning participants to adjust their pace and stay alert to changing conditions. The event will kick off with a yellow flag, signaling moderate conditions, but runners should prepare for things to heat up as the day progresses. A color-coded flag system will be in place along the route: yellow means slow down and be ready for worsening conditions; red warns of potentially dangerous heat, urging runners to slow down, follow instructions, and consider stopping; black indicates extreme danger, at which point participation will be halted and official directions must be followed.

To combat the rising mercury, organizers have set up 10 fluid stations and 14 misting stations along the course, plus water at the start and finish lines. Medical stations with ice will be available at 10 locations, and iced towels will be handed out in the post-finish area. Runners are also advised to recognize heat-related symptoms such as dizziness, faintness, clammy skin, or disorientation—and to take action immediately if they feel off.

Whether you're chasing a personal best or just aiming to cross the finish line, staying hydrated and listening to your body are key. With the right preparation—like wearing lightweight, moisture-wicking gear and starting slower than usual—you can tackle the Brooklyn heat and still enjoy the iconic seaside finish.