Latest on 100 metres dash all over The Paper
I believe the answer is:
newsprint
'paper' is the definition.
(newsprint is a kind of paper)
'latest on 100 metres dash' is the wordplay.
'latest' becomes 'new'.
'on s00 metres dash' becomes 'sprint' (I am not sure about this - if you are sure you should believe this answer much more).
'new'+'sprint'='NEWSPRINT'
'all over the' acts as a link.
This may not be correct. Some or all of it may be part of another bit of the clue.
Can you help me to learn more?
(Other definitions for newsprint that I've seen before include "Paper used by the Guardian or Daily Mirror, say" , "Bearer of tidings" , "Paper for dailies" , "sports pages and much else" , "cheap paper" .)