Racing and relaxing came together Saturday at the fourth annual Historic Marietta Bike Race.

The event drew an estimated 500 onlookers to watch bicyclists of all ages hustle over the one-mile course through the borough.

“The idea is to promote Marietta as a town as a whole. We want to bring people in and let them see what Marietta has to offer,” said Bill Laudien, one of the event’s two race directors.

“And for Marietta residents, it’s an opportunity to have a block party. They can sit right on their front stoop and see some of the best cyclists in the world,” he said.

Visitors from out of town staked out prime viewing spots — locations with shade on a sunny, hot day — along the route of Market, Gay, Front and Locust streets to cheer as racers whirled past.

Saturday’s turnout was consistent with the crowds in earlier years, said Laudien.

About 150 men and women competed for cash prizes in four categories, while 60-some children competed in two categories.

But if watching the cyclists wasn’t enticing, there also were children’s activities, such as a bouncy castle and bicycling decorating, as well as sidewalk tables by local merchants.

“It’s a fun atmosphere,” said Dorothy Mozloom, 28, of Lancaster. “The people are always nice, and it’s good to see local businesses get involved.”

The day is a community-based effort, said Laudien, whose day job is Lancaster Township manager.

Some 15 businesses sponsor the festivities. About 40 volunteers plan and carry them out, said fellow race director Michelle Bote, a Millersville University administrator.

Returning to watch their second Marietta Bike Race on Saturday were Bob Gotwols, 65, of Wrightsville, and his wife, Jackie.

“We were here last year and we had a ball,” he said. “It’s pretty cool to be so close up.”

Some of the spectators had a particular racer to watch, in addition to enjoying the day overall.

For instance, a small rooting section was focused on Jason Lindemuth, 36, who races on a team sponsored by Divine Swine, a barbecue restaurant in Manheim.

“I enjoy coming out and watching him race,” said his mother, Deb Lindemuth, 65, of Lancaster. “This is a nice place for it.”

His girlfriend, Michelle Griesemer, 33, of Lititz, echoed that assessment. Of the various races across the region, Marietta’s event is among the most entertaining, she said.