无负今日，邑马当先！就在今天！这份温馨提示请查收

Group 1 - The 2025 Jiangmen Marathon will start at 7:30 AM on December 21, 2025, at Wuyi Overseas Chinese Square [1] - Weather conditions for the marathon day include sunny to partly cloudy skies with temperatures ranging from 18 to 23 degrees Celsius and humidity between 40% to 80% [2][6] - Participants are advised to pay attention to the weather, stay hydrated, and manage their body temperature during the race due to the high humidity and temperature [3][6] Group 2 - The marathon will have a total of 7 water stations and 9 beverage stations along the route to assist runners in staying hydrated [12] - Runners are recommended to consume 400-600ml of water two hours before the race and to continue hydrating during the race with 600-1000ml of sports drinks per hour [10][11] - Post-race hydration should include replenishing electrolytes, with a recommendation to drink 1-1.5 times the amount of fluid lost during the race [11] Group 3 - Traffic control measures will be implemented starting at 6:30 AM on December 21, affecting various roads around the marathon route to ensure safety and smooth operation of the event [16][17][23] - Specific intersections will have their traffic restrictions lifted at staggered times throughout the morning, with the aim of restoring normal traffic flow as soon as possible [23] - A temporary flight restriction will be in place for low-altitude aircraft in designated areas during the marathon to ensure safety [24][25]