Steps goal hit, travelling miles over run (9)
I believe the answer is:
algorithm
'steps' is the definition.
(an algorithm is a series of steps or processes)
'goal hit travelling miles over run' is the wordplay.
I cannot really see how this works, but
an anagram of 'goal' is 'algo' which is within the answer.
an anagram of 'hit' is 'ith' which is located in the answer.
'miles' could be 'm' (common abbreviation) and 'm' is found in the answer.
'run' could be 'r' (cricket abbreviation) and 'r' is found in the answer.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
(Other definitions for algorithm that I've seen before include "What, as a rule, helps maths student" , "Procedure" , "Step-by-step solution method - oral might (anag)" , "Set of rules for solving problem by computer" , "Set of rules (for computer) to solve a problem" .)