WINDHAM – Windham Summerfest, which at one point earlier this year had been canceled due to lack of volunteers, is back for its seventh edition on Saturday, June 22. And it’s bigger and better than ever, organizers say.

The daylong event kicks off with a 5K road race at the Windham High School track at 9 a.m. The Windham Lions Club provides a pancake breakfast from 9-11 a.m.

The Duane Clark Car Show, showcasing 24 classes of vintage vehicles, takes place in the front parking lot of the high school starting at 10 a.m. Entry is free for spectators. Car registration is $7 with all proceeds going to the scholarship fund, honoring Clark, who was killed in 1971. Clark’s Windham High School class of 1964 hosts the annual car show in his honor.

At noon, the first entry of the annual Summerfest parade steps off on the 1-mile route along Gray Road from the intersection of Lotts Drive to the high school. Parade organizer Clarence Wisecup says more than 50 entries, including Shriners mini-vehicles, Windham public safety vehicles, and many clubs and organizations, are taking part.

There will be plenty of food and entertainment as well. Flamin’ Raymond and Sizzlin’ Susan (1:30-2:30 p.m.), Gloria Jean (2:45-3:45 p.m.), Johnny the K (5:45-6:45 p.m.), and Motor Booty Affair (7:30-9:15 p.m.) are among the performers.

With the Windham Chamber Singers celebrating its 25th anniversary in 2013, Director Rick Nickerson has invited 350 former singers to mark the special occasion with a 25th Anniversary Reunion Concert at the Windham High School Performing Arts Center from 7-9 p.m. Tickets are $5.

“We chose the day of Summerfest on purpose because I can’t think of a better time to bring back 25 years worth of singers than on the very day we’re celebrating our town,” Nickerson said.

Nickerson will oversee an all-day rehearsal before the concert and expects the massive choir to fill the stage.

“We have several original members of the choir dating back to 1988. Everybody’s going to look a little different I think,” he said. “Some have not sung since high school. We have siblings who were far enough apart in age that they never got to sing together, and now they get to perform together for the first time.”

The concert is part of a busy reunion weekend for the Chamber Singers. On Friday night, former singers are invited to Rustler’s Steak House for a get-together. Saturday will be devoted to the concert, and on Sunday, singers and their families are invited to a spot on Sebago Lake for a reunion event. The group is also releasing a 25th anniversary album the same weekend, which will be available at the concert.

After the concert, at about 9:15 p.m., a fireworks show donated by Central Maine Pyrotechnics and overseen by Windham High School Principal Chris Howell, will end Summerfest in style.

Event committee members Ron Eby, Kelly Mank, Clarence Wisecup, Kathy Varney, Robin Mullens, Robert York and Rick Sanborn, who have met several dozen times in recent months to plan the event, are pleased Windham’s biggest summertime event is continuing.

“It’s been phenomenal,” Wisecup said. “The local businesses and townspeople have gotten behind this thing and supported us beyond our wildest dreams so we’re able to pull this thing off.”

Mank said there are many in the community helping to pull off Summerfest, not just the committee.

“We also want to thank all of our parade volunteers and day-of volunteers, the town, the fire department, the police department, the school. It wouldn’t be able to get done without any of them,” she said. “We just want the town to know it’s a community-run group and it’s all residents running it, and we want to bring it back for the town. We want to make sure that our town has this for our kids and our businesses and our community.”