The Bokeh can definately be a little busy at times - the tree to the top right of the runner in the third photo (Hartmann) is a case in point.
I much prefer the blurring of the 135L, I like to have a zoom for runners on a straight road race (to maximize the number of frames per runner)...
|I see you by Phocal|
from Animal eye reflection
|Apocalyptic Sunset by Impact Photo|
from A wheel good photo!
|AU4_6418_BB-35 by DaveInHouston|