LOS ANGELES — When the season started, Michigan leading rusher Blake Corum was aware of how far he was from the program’s career record for rushing touchdowns. And it was a good distance. He had 31 touchdowns, 24 from Anthony Thomas’ record of 55, set during his career (1997-2000). Now, as No. 1 Michigan prepares to face No. 4 Alabama in the Rose Bowl national semifinal, Corum is one rushing score from setting the program record. He has the single-season program record with 24 rushing touchdowns this season. “At the beginning of the season, it seemed kind of far,” Corum said. “But then you hav…