Top Boston runners

  Robert Cheruiyot of Kenya won his fourth Boston Marathon on Monday, running away from the pack in a blistering official time of 2 hours, 7 minutes, 46 seconds, The Associated Press reports.
   Ethiopia's Dire Tune, above, outkicked Alevtina Biktimirova to win by 2 seconds, the closest finish in the history of the women's race. Tune's unofficial time was 2:25:25.
  Cheruiyot missed the course record he set two years ago by 33 seconds. He became the fourth man with four victories in the men's edition of the world's oldest annual 26.2-mile race.  Cheruiyot and Tune each earned $150,000.