I got this data from coach Karl; it was part this article regarding the heat and times at the 2012 Boston Marathon.You will notice how much slower the field was this year in comparison to 2011.
|1000th place||3:09:37||2:55:41||3:17:51||approx 3:24|
|3:00||530 runners||1,519 runners||320 runners||415 runners|
|4:00||8,646 runners||16,209||5497 runners||na|
|Avg Time||4:18:27||3:49:54||4:13:02||not known|
|Starters||22,426||98.1% of above||virtually all of above|
|Finishers||21,554||96.1% of above||97-98% of above|