Washington: India's marathon man Ashis Roy has added another half marathon to his bag to take his overall tally to 138 as he completed his 23rd 13.1-mile run in the Navy-Air Force Half Marathon here.

Roy, 82, the oldest runner participating in the half marathon, finished the course in three hours, 28 minutes and 40 seconds, clipping five minutes from his last US run in Alexandria, a Washington suburb in Virginia, last May.