PLAYA DEL REY (CBSLA) — Retired Marine Sgt. Rob Jones lost both legs in Afghanistan.

As KCAL9/CBS2’s Joy Benedict reports, the veteran is running a marathon a day for 31 days. He talked with Benedict about the challenge during his 18th stop in Los Angeles.

READ MORE: Davis' 28 Lead Kings To 2nd Straight Win Over Clippers

“My ability to keep going probably comes a lot from what I experienced in the Marine Corps,” said Jones.

He lost his legs in Afghanistan seven years ago. A combat engineer, it was his job to find a safe route through explosive terrain.

“I was trying to find a route through a danger area and the IED found me first,” said Jones.

But within months he was active again — winning a bronze medal at the Paralympics and then setting a goal to raise a million dollars for wounded veterans.

He rode 5,200 miles on his bike across America, raising more than $100,000.

READ MORE: Family Of 18-Year-Old Garret Hayward, Killed By Suspected DUI Driver, Hold Emotional Vigil

Now he is running 31 marathons in 31 days.

His final marathon is on the National Mall in Washington, D.C. Nov. 11, Veterans Day.

“I guess I realized when I got wounded that my mission hadn’t changed at all,” said Jones. “I still wanted to contribute to America.”

Jones doesn’t run 26.2 miles in one stretch. He runs. Takes a break. And runs again. A pattern for most of life’s journeys.

“Mission accomplishment is more important than anything else,” said Jones.

MORE NEWS: In Wake Of Recent Crime Uptick, Beverly Hills Hires More Officers And Increases Patrols

One step at a time. One city a day. He plans to make it to D.C. to prove — despite losing his legs — he still has the ability to change the world.