Artistic: Interesting capture though I never would have guessed it to be a cyclist, due to the darkness and amount of blur. His back being to the camera makes it difficult to really say anything. Not being able to see his face means we don't know if he's tired, jubilant, bored, sad, misrable etc.
Technical: The b/w seems to bring out a lot of noise - going up to 1600 ISO may have helped. Comp centred and a little dull.
I thought this was your work, but ran out of time before I could vote/comment. Too darn bad, because I loved it. My procrastination was your loss. Funny how most of my favorites end up no better than the bottom half, to hell with scores.