NEW YORK (AP) _ Rescued Chilean miner Edison Pena dropped out of Sunday's New York City Marathon at the 11-mile mark.

Pena entered Sunday's 26.2-mile event again following a difficult year that included a hospitalization in Santiago for psychological problems and reported drug and alcohol issues.

He finished the Tokyo Marathon in February, but his recent training had dropped to 45 minutes a day, four days a week. The 35-year-old Pena said at a press conference Thursday in New York that he's been bothered by an injured left knee.

Pena discussed his emotional struggles this week, saying many of the 32 other trapped miners don't have jobs and suffer from ``psychological issues'' and insomnia. They spent 69 days underground in a gold and copper mine. The first anniversary of the rescue was Oct. 13.

He said he returned to New York because running is ``therapeutic'' and ``despite the fact that I've fallen down to show that I've risen up.''

When he was trapped underground, Pena logged up to six miles each day running through the tunnels in steel-toed boots to keep his mind and body sharp in the sweltering darkness until rescuers managed to make contact on Day 17. They lowered down food and running shoes, and he kept up the regime until the miners were rescued 52 days later.

Last year, he finished the NYC Marathon with ice packs on his knees in 5 hours, 40 minutes.