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)...
|Mig-17-1 by bbmach|
from Low Pass
|Rotting Gracefully by Mond|
from Natural Decay
|attic by wgjohnston|
from In the attic, or in the basement!
|Ox Bow Aspen by McFrost|
from cell phones - nature photographs