Republican vice presidential nominee Paul Ryan says he didn't run a marathon in less than three hours as he claimed in a nationally broadcast interview.

The candidate acknowledged Saturday he had misstated his marathon time by more than an hour.

He released a statement correcting the record after Runner's World magazine found evidence he had completed one marathon and finished in just over four hours.

Ryan told radio host Hugh Hewitt last month he had run a "two hour and fifty-something" marathon. That's a pace of less than 7 minutes per mile for the 26.2 mile course - extremely fast for recreational runners.

A marathon time of 4 hours and one minute is equivalent to a pace of 9:12 per mile. A marathon time of 3 hours is a pace of 6:52 per mile.

Ryan said he should have rounded his marathon time to four hours, not three.

Runner's World said a Ryan spokesman on Friday night forwarded a statement from the candidate about his marathon experience:

"The race was more than 20 years ago, but my brother Tobin—who ran Boston last year—reminds me that he is the owner of the fastest marathon in the family and has never himself ran a sub-three. If I were to do any rounding, it would certainly be to four hours, not three. He gave me a good ribbing over this at dinner tonight."

This article includes reporting by The Associated Press.