According to this ARRS link, http://www.arrs.net/TB_Mara.htm average marathon biases are:
+52.3 New York City (NY/USA)
-1.1 Frankfurt (GER)
-68.5 Berlin (GER)
So New York is typically 52 seconds slow, while Berlin is 69 seconds fast, and Frankfurt (and Chicago -0.1) are fairly neutral.
I haven't seen specific race time biases for these 2011 races, but assuming we can use the "average" race time biases:
- The 2:03:38 in Berlin is only worth 2:04:46.5
- The 2:03:42 in Frankfurt is worth a 2:03:43.1
- A 2:05:06 performance in New York is worth a 2:04:13.7
This year's Boston advantage was computed to be -1:37 (?) this year, making a 2:03:02 worth 2:04:39.
Sammy Wanjiru's Olympic performance of 2:06:32 was worth 2:04:00.
This link http://www.arrs.net/AllTime/ATB_Mara.htm should be updated after the end of the year, and then we can see how all of the 2011 races compare, according to statistical calculations by the ARRS.
survey says wrote:
According to the ARRS, NYCM is 46 sec. slow on average over its history, so that would be 2:04:24.