Zigzagging race (6)
I believe the answer is:
slalom
'zigzagging race' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for slalom that I've seen before include "Ski race down zig-zag course" , "Winter Olympic event" , "Winding ski-run" , "Downhill ski-race over a winding course" , "Windy skiing event" .)