Distance raced needs good energy (5)
I believe the answer is:
Here is my best explanation:
'distance' is the definition.
'raced needs good energy' is the subsidiary indication.
'raced' becomes 'ran' (running is a kind of racing).
'needs' is a charade indicator (letters next to each other).
'good' becomes 'g' (abbreviation).
'energy' becomes 'e' (symbol in physics e.g. in Einstein's famous e=mc2).
(Other definitions for range that I've seen before include "Breadth (of variation)", "Vocal compass", "Compass - scope", "Span", "Grassland - variety", "Prairie", "Set < compass", "sight", "Area of variation" and "specific category".)