Leaders of a massive annual motorcycle procession on 9/11 say this year's ride will be their last.

FOX's Monica Rix has details:

The ride started back in 2001, two months after terrorists hijacked airplanes and crashed them into the Pentagon and World Trade Center, another jet crashed in Shanksville, Pennsylvania.

Every year since, more than a thousand bikers roar through Maryland and Virginia, riding past the landmarks to remember the lives lost in that tragedy.

This year, the founder of America's 9/11 Foundation, Ted Sjurseth says their 15th ride will also be their last.

He says they're tired of battling police and highway agencies of the two states, who are reluctant to block roads and stop traffic for the procession. So far, the group has raised $330,000 for scholarships and $500,000 for police equipment and Sjurseth says they're considering other fundraising options.

Their final ride is set for August 19.

Monica Rix, FOX News.

Follow Monica Rix on Twitter: @MonicaRix