By Marie Torto, Boston.com Staff

On Saturday, Boston Runners and Run Against Cancer Events will host #onerun to give runners who didn't get to complete the Boston Marathon on April 15 a chance to cross the finish line.

The non-competitive 1-mile run covers the final mile of the Boston Marathon course. More than 5,000 runners were still on the course when the marathon was stopped after two bombs exploded near the finish line.

Alain Ferry, founder of RACE, said the idea was first proposed by Andy Marx of Informal Running in an email the day after the Boston Marathon. The following Monday, a group met in Ferry's office and #onerun was created.

The run will start at the "One Mile to Go" marker in front of Dunkin' Donuts at 532 Commonwealth Ave in Kenmore Square. Runners will go down Commonwealth Ave., under Massachusetts Ave., take a right on Hereford and left on Boylston, just like in the real Boston Marathon.

The event, which is scheduled to start at 10 am, is free and open to everyone. More than 2,000 people have RSVP-ed on the event's Facebook page.

"Our goals for #onerun are to offer runners and spectators an opportunity to experience some of the magic of the final mile of the Boston Marathon while also attracting hundreds of thousands of dollars in consumer spending to Back Bay businesses," Ferry said. "Whether running or spectating, we'd love to see as many people out there, or more, than we had on April 15."

For more information about the race, visit #onerun's Facebook page or e-mail onerun@bostonrunners.com.