Shows endurance running call from America? (4,8)
I believe the answer is:
long distance
'call from america?' is the definition.
'long distance' can be an answer for 'call' (thesaurus). I am not sure about the 'from america?' bit.
'shows endurance running' is the wordplay.
I cannot really understand how this works, but
'running' could be 'on' (eg when a machine is running it is on) and 'on' is found in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for long distance that I've seen before include "Operating from afar - like a marathon" , "Operating between far removed locations" , "Description of a runner" , "Acting between remote locations" .)