Fugitive avoids a long stretch of tarmac (6)
I believe the answer is:
runway
'long stretch of tarmac' is the definition.
(as in an airport runway)
'fugitive avoids a' is the wordplay.
'fugitive' becomes 'runaway' (synonyms).
'avoids' suggests deleting specific letters.
'runaway' with 'a' removed is 'RUNWAY'.
(Other definitions for runway that I've seen before include "Take-off/landing strip" , "Take-off tarmac" , "Where one takes off" , "Take-off and landing strip" , "Unwary (anag)" .)