Road races are, by definition, somewhat exclusive events: If you’re not a runner, the chances that you’d be interested in entering one are pretty slim. Right?

Not so fast.

On Saturday, runners, walkers, skateboarders and cyclists alike will flock to Bangor for a not-so-typical race.

The Main Street Mile Milk Run, which is being held to celebrate the 150th anniversary of the YMCA in the U.S., will offer something for nearly everybody, organizers say.

“We wanted it to be something for not only the regular runner, but also for everyday folk to enjoy,” said Rob Reeves, the Bangor YMCA’s executive director.

To do that, organizers tinkered with the normal road race formula, making the Milk Run a scant mile long and staging it over a mostly downhill course.

And then, to avoid congestion, they split the race into four different heats.

The first heat, a family fun walk, begins at 10 a.m., the recreational mile starts at 10:20, an elite mile is set for 10:35, and an anything-goes “wheels” division will take off at 10:45. Runners in the elite division will be expected to run a seven-minute mile or faster.

All the heats begin just south of the Paul Bunyan statue on Main Street and finish downtown at West Market Square.

Registration tables will open at 7:30 a.m. Entry fees are $10 for individuals and $25 for a family. Race-day registration will be held at the Bangor Recreation and Parks building on Main Street. Registrations will be taken at the YMCA on Friday.

The course is largely downhill, with a slight upgrade near the Dunkin’ Donuts store. But after cresting that rise and heading through the intersection at Union Street, participants will enjoy a speedy finish as they cruise down the hill into downtown.

Reeves said the wheeled race should be entertaining, as he’s told service groups he has spoken to.

“I told a Rotary group, if you want to get in the wheels division, we’ll try to make sure we get you stopped before you get to the next intersection,” Reeves said with a laugh.