EAST MILLINOCKET, Maine — Kelly Willigar and Kim Marston did great work for the town for several years, but the two will no longer be the volunteer organizers of SummerFest, officials said Tuesday.

Willigar said she has opted not to organize the four-day, volunteer-driven event this year for personal reasons. She had served as the event’s primary organizer for eight years. Starting in 2005, she also served as a subcommittee chairwoman and volunteer organizer of the town’s centennial celebration in 2007.

“Hopefully it won’t end completely. Somebody will hopefully come in and take over,” Willigar said Tuesday.

Marston, the wife of Selectman Mark Marston, wrote a letter to selectmen that was read at the board’s Monday night meeting. In it, she said that a new job was among several reasons why she was stepping down.

Selectmen expressed regret at Willigar and Kim Marston’s departure. They praised the two women for the energy and dedication they brought to SummerFest. Held in July, the festival draws as many as 5,000 people. Hot dog roasts, a fireworks show, lots of music featuring local bands, children’s games, and walking and running races are among the events typically featured.

Willigar and Marston almost resigned the festival last year. A series of donations — including an anonymous $5,000 gift — gave the volunteers the $10,000 they needed to run the event one more year, Marston said at the time.

Board Chairman Mark Scally encouraged anyone who wants to volunteer for or to run the event to call the town office at 746-3376.