School obstacle race finally run (8)
I believe the answer is:
complete
'run' is the definition.
The definition and answer can be both related to change as well as being verbs in their base form.
Maybe they are linked in a way I don't understand?
'school obstacle race finally' is the wordplay.
'school' becomes 'comp' (short for comprehensive school).
'obstacle' becomes 'let' ('let' could historically mean an obstruction).
'finally' indicates one should take the final letters.
The final letter of 'race' is 'e'.
'comp'+'let'+'e'='COMPLETE'
Can you help me to learn more?
(Other definitions for complete that I've seen before include "Having all the necessary parts" , "accomplished" , "Bring to a finish" , "Finish; whole" , "Intact" .)