Trained sort of detour beyond Thailand's capital (7)
I believe the answer is:
tutored
'trained' is the definition.
(I've seen this before)
'sort of detour beyond thailand's capital' is the wordplay.
'sort of' is an anagram indicator.
'beyond' says to put letters next to each other.
'capital' says to take the initial letters.
The first letter of 'thailands' is 't'.
'detour' anagrammed gives 'utored'.
'utored' after 't' is 'TUTORED'.
(Other definitions for tutored that I've seen before include "Trained" , "Gave private lessons to" , "Taught small groups" , "Was coach" , "Coached" .)