Gull Lake Season Series – Every Wednesday evening from May 14 – September 17, 2025 (NOS)
Michigan Open Championship Sunfish Regatta– August 9-10 , 2025
Gull Lake Holiday Series – Portsmouth Handicap Race – Open to all sailboats
- Memorial Day: May 26, 2025 (Monday)
- Independence Day: July 4, 2025 (Friday)
- Labor Day: September 1, 2025 (Monday)
Annual Gull Lake Sunfish Race Around the Island – Sunday, September 28, 2025 (1:30 PM ET Start)