Beau Biden, son of Vice President Joe Biden, bashed Paul Ryan Wednesday for shaving more than an hour off his marathon time and even turned his attack into a family matter, saying "my mom could take him."

"The Romney-Ryan budget means what it says. I believe his math as it relates to his budget. I'm not sure if I believe his math as it relates to his marathon times," Beau Biden told the Veterans and Military Families Council Meeting in Charlotte, N.C. "You know those runners out here, Army personnel, Navy guys and women, Marines, airmen, Coast Guard. You know your times, right? You know what your PT score is right? That's not something you forget.

"I guess he's revised it and now it's up to around 4 hours," Biden added. "He said it was under three, which would make him kind of be able to qualify for the Olympics. It's now up to around four. It's close, getting near where my mom, who ran a marathon in about four and a half hours, so I guess he can compete with my mom. Maybe not. I think my mom could take him."

The crowd applauded as Biden's mother, Dr. Jill Biden, sat to his left.

Last week, Ryan, Republican presidential nominee Mitt Romney's running mate, took some heat for inaccurately claiming he ran a marathon under three hours when he was 20 years old. But Ryan has since said he misstated his time. Runner's World magazine reported Ryan finished the Grandma's Marathon in Duluth, Minn., in 1990 with a time of 4:01:25.

Jill Biden, an avid runner who in 2010 told Runners magazine she ran five miles, five days a week, completed the Marine Corps Marathon in Washington, D.C., with a time of 4:30:02 in 1998.

Beau Biden, a major in the Delaware National Guard and an Iraq war veteran, accused Romney and Ryan of not prioritizing veteran's issues.

"We have a candidate named Mitt Romney who didn't even utter the word, 'veteran,' in his speech last week," he said. "He has a 59-point plan that doesn't mention the word, 'veteran.'"