Runners cycling to get snog (4)
I believe the answer is:
kiss
'snog' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for kiss that I've seen before include "Touch lightly - a sign of affection" , "Smooch" , "Amorous greeting" , "Peck (on cheek or lips?)" , "Embrace" .)