Saturday, August 27
PADDLING, Paddlers 4 Humanity’s 18-mile open water paddle from Montauk to Block Island, Montauk Lighthouse, 6:30 a.m.
Sunday, August 28
HAMPTON CLASSIC, opening day, beginning with leadline classes in the Grand Prix ring at 8 a.m.; opening ceremonies, noon, with $20,000 Nicolock Time Challenge to follow in the Grand Prix ring, Snake Hollow Road, Bridgehampton, showgrounds.
XTERRA TRIATHLON, half-mile lake swim, 11-mile mountain bike leg, and 5K trail run, Schiff Scout Reservation, Wading River, 8 a.m.
Monday, August 29
HIGH SCHOOL SPORTS, first day of practice for fall high school sports, from 6 a.m.
HAMPTON CLASSIC, finals of Long Island Horse Show Series for riders with disabilities and A.S.P.C.A. animal behavior clinic, from 8 a.m., Snake Hollow Road, Bridgehampton, showgrounds.
Tuesday, August 30
HAMPTON CLASSIC, featured events to include $30,000 7 and 8-year-old Young Jumper championship, Newsday Open Jumper class, and Brown Harris Stevens Open Jumper class, Snake Hollow Road, Bridgehampton, showgrounds, from 8 a.m.
Wednesday, August 31
HAMPTON CLASSIC, featured events to include SHF Enterprises 5-year-old and Split Rock Farm 6-year-old Young Jumper championships and Pilatus Open Jumper class, Snake Hollow Road, Bridgehampton, showgrounds, from 8 a.m.