Run various trips round capital of Norway (6)
I believe the answer is:
Here is my best explanation:
'run' is the definition.
(sprint is a kind of run)
'various trips round capital of norway' is the subsidiary indication.
'various' indicates anagramming the letters.
'round' is an insertion indicator.
'capital of' says to take the initial letters.
The initial letter of 'norway' is 'n'.
'trips' anagrammed gives 'sprit'.
'sprit' going around 'n' is 'sprint'.
(Other definitions for sprint that I've seen before include "Dash", "Run quickly", "Short race at full speed", "Rush", "Quick dash", "Run fast", "Short fast run", "Run at full speed for a short distance", "Run rapidly" and "Short run at full speed".)